apps: add studio sources

apps/studio/CMakeLists.txt

@@ -0,0 +1,160 @@
+cmake_minimum_required(VERSION 3.15)
+project(afs_studio LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+include(FetchContent)
+
+# M1/ARM64 optimizations
+if(CMAKE_SYSTEM_PROCESSOR MATCHES "arm64")
+  add_compile_options(-march=armv8-a+simd+dotprod -O3 -ffast-math)
+  add_compile_definitions(AFS_ARM64=1)
+endif()
+
+# =============================================================================
+# Dependencies
+# =============================================================================
+
+option(AFS_FETCH_GLFW "Fetch GLFW automatically if missing" ON)
+
+# Fetch Dear ImGui
+FetchContent_Declare(
+  imgui
+  GIT_REPOSITORY https://github.com/ocornut/imgui.git
+  GIT_TAG docking
+)
+FetchContent_MakeAvailable(imgui)
+
+# Fetch ImPlot
+FetchContent_Declare(
+  implot
+  GIT_REPOSITORY https://github.com/epezent/implot.git
+  GIT_TAG master
+)
+FetchContent_MakeAvailable(implot)
+
+# Fetch nlohmann/json (header-only)
+FetchContent_Declare(
+  json
+  GIT_REPOSITORY https://github.com/nlohmann/json.git
+  GIT_TAG v3.11.3
+)
+FetchContent_MakeAvailable(json)
+
+# Find GLFW
+find_package(glfw3 3.3 QUIET)
+if(NOT glfw3_FOUND AND AFS_FETCH_GLFW)
+  message(STATUS "glfw3 not found - fetching with FetchContent")
+  set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
+  set(GLFW_BUILD_TESTS OFF CACHE BOOL "" FORCE)
+  set(GLFW_BUILD_DOCS OFF CACHE BOOL "" FORCE)
+  set(GLFW_INSTALL OFF CACHE BOOL "" FORCE)
+  FetchContent_Declare(
+    glfw
+    GIT_REPOSITORY https://github.com/glfw/glfw.git
+    GIT_TAG 3.4
+  )
+  FetchContent_MakeAvailable(glfw)
+  set(glfw3_FOUND TRUE)
+endif()
+if(NOT glfw3_FOUND)
+  message(FATAL_ERROR "glfw3 not found. Install it or set AFS_FETCH_GLFW=ON.")
+endif()
+
+find_package(OpenGL REQUIRED)
+
+# =============================================================================
+# Build afs_studio
+# =============================================================================
+
+# ImGui sources
+set(IMGUI_SOURCES
+  ${imgui_SOURCE_DIR}/imgui.cpp
+  ${imgui_SOURCE_DIR}/imgui_draw.cpp
+  ${imgui_SOURCE_DIR}/imgui_tables.cpp
+  ${imgui_SOURCE_DIR}/imgui_widgets.cpp
+  ${imgui_SOURCE_DIR}/imgui_demo.cpp
+  ${imgui_SOURCE_DIR}/backends/imgui_impl_glfw.cpp
+  ${imgui_SOURCE_DIR}/backends/imgui_impl_opengl3.cpp
+)
+
+# ImPlot sources
+set(IMPLOT_SOURCES
+  ${implot_SOURCE_DIR}/implot.cpp
+  ${implot_SOURCE_DIR}/implot_items.cpp
+  ${implot_SOURCE_DIR}/implot_demo.cpp
+)
+
+# afs_studio application
+add_executable(afs_studio
+  src/main.cc
+  src/app.cc
+  src/data_loader.cc
+  src/core/registry_reader.cc
+  src/core/training_monitor.cc
+  src/core/deployment_actions.cc
+  src/core/filesystem.cc
+  src/core/logger.cc
+  src/core/context.cc
+  src/core/assets.cc
+  src/core/llama_client.cc
+  src/ui/core.cc
+  src/ui/components/metrics.cc
+  src/ui/components/charts.cc
+  src/ui/components/tabs.cc
+  src/ui/components/panels.cc
+  src/ui/components/model_registry.cc
+  src/ui/components/training_dashboard.cc
+  src/ui/components/deployment_panel.cc
+  src/ui/components/comparison_view.cc
+  src/ui/components/graph_browser.cc
+  src/ui/components/graph_navigator.cc
+  src/ui/components/companion_panels.cc
+  src/ui/charts/quality_trends.cc
+  src/ui/charts/generator_efficiency.cc
+  src/ui/charts/coverage_density.cc
+  src/ui/panels/chat_panel.cc
+  src/ui/shortcuts.cc
+  src/widgets/text_editor.cc
+  src/widgets/sample_review.cc
+  ${IMGUI_SOURCES}
+  ${IMPLOT_SOURCES}
+)
+
+target_include_directories(afs_studio PRIVATE
+  ${CMAKE_CURRENT_SOURCE_DIR}/src
+  ${imgui_SOURCE_DIR}
+  ${imgui_SOURCE_DIR}/backends
+  ${implot_SOURCE_DIR}
+)
+
+target_compile_definitions(afs_studio PRIVATE
+  IMGUI_IMPL_OPENGL_LOADER_GLAD=0
+)
+
+if(TARGET OpenGL::OpenGL)
+  set(AFS_OPENGL_TARGET OpenGL::OpenGL)
+else()
+  set(AFS_OPENGL_TARGET OpenGL::GL)
+endif()
+
+target_link_libraries(afs_studio PRIVATE
+  glfw
+  ${AFS_OPENGL_TARGET}
+  nlohmann_json::nlohmann_json
+)
+
+# macOS specific
+if(APPLE)
+  target_link_libraries(afs_studio PRIVATE
+    "-framework Cocoa"
+    "-framework IOKit"
+    "-framework CoreVideo"
+  )
+endif()
+
+# Install
+install(TARGETS afs_studio RUNTIME DESTINATION bin)
+
+message(STATUS "afs_studio will be built")

apps/studio/README.md

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+# afs_studio
+
+Native C++17 visualization and training management application for AFS.
+
+## Build
+
+```bash
+# From project root
+cmake -B build -S . -DAFS_BUILD_STUDIO=ON
+cmake --build build --target afs_studio
+```
+
+## Run
+
+```bash
+./build/apps/studio/afs_studio
+```
+
+## Features
+
+- **Dashboard**: Training metrics overview
+- **Analysis**: Quality score trends, domain breakdown
+- **Training Hub**: Real-time training status
+- **Sample Review**: Data quality inspection
+- **Text Editor**: Built-in code editor
+- **Shortcut System**: Customizable keyboard shortcuts (Ctrl+/)
+
+## Dependencies (auto-fetched)
+
+- Dear ImGui (docking branch)
+- ImPlot
+- GLFW
+- nlohmann/json

apps/studio/src/app.cc

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+#include "app.h"
+#include "core/logger.h"
+#include "core/context.h"
+#include "core/assets.h"
+#include "ui/panels/chat_panel.h"
+
+#include <algorithm>
+#include <cctype>
+#include <cstdlib>
+#include <cfloat>
+#include <cmath>
+#include <cstdio>
+#include <fstream>
+#include <cstring>
+#include <vector>
+
+// GLFW + OpenGL
+#define GL_SILENCE_DEPRECATION
+#include <GLFW/glfw3.h>
+
+// Dear ImGui
+#include "imgui.h"
+#include "imgui_impl_glfw.h"
+#include "imgui_impl_opengl3.h"
+#include "imgui_internal.h"
+#include "implot.h"
+#include "themes/afs_theme.h"
+#include "icons.h"
+
+// Modular Components
+#include "ui/core.h"
+#include "ui/components/metrics.h"
+#include "ui/components/charts.h"
+#include "ui/components/tabs.h"
+#include "ui/components/panels.h"
+
+namespace afs {
+namespace viz {
+
+App::App(const std::string& data_path)
+    : data_path_(data_path), loader_(data_path) {
+  LOG_INFO("AFS Studio initialize with data path: " + data_path);
+
+  std::snprintf(state_.new_agent_role.data(), state_.new_agent_role.size(), "Evaluator");
+  std::snprintf(state_.new_mission_owner.data(), state_.new_mission_owner.size(), "Ops");
+  std::snprintf(state_.system_prompt.data(), state_.system_prompt.size(), 
+                "You are a AFS data science assistant. Analyze the training trends and suggest optimizations.");
+  
+  const char* home = std::getenv("HOME");
+  state_.current_browser_path = home ? std::filesystem::path(home) : std::filesystem::current_path();
+
+  // Initialize LlamaClient with default config
+  LlamaConfig llama_config;
+  llama_config.llama_cli_path = "~/llama.cpp/build/bin/llama-cli";
+  llama_config.model_path = "~/llama.cpp/models/tinyllama-1.1b.Q4_K_M.gguf";
+  llama_config.rpc_servers = "100.104.53.21:50052";
+  llama_config.use_rpc = true;
+  llama_config.context_size = 4096;
+  llama_config.n_predict = 256;
+  llama_config.temperature = 0.7f;
+  llama_client_.SetConfig(llama_config);
+  llama_client_.CheckHealth();
+  ui::RefreshBrowserEntries(state_);
+  SeedDefaultState();
+
+  // Create graphics context
+  context_ = std::make_unique<studio::core::GraphicsContext>("AFS Studio", 1400, 900);
+  if (context_->IsValid()) {
+      fonts_ = studio::core::AssetLoader::LoadFonts();
+      themes::ApplyHafsTheme();
+      shortcut_manager_.LoadFromDisk();
+
+      // Better default heights for richness
+      state_.chart_height = 220.0f;
+      state_.plot_height = 220.0f;
+      state_.chart_columns = 2;
+  } else {
+      LOG_ERROR("Failed to initialize graphics context");
+  }
+}
+
+int App::Run() {
+  if (!context_ || !context_->IsValid()) return 1;
+
+  RefreshData("startup");
+
+  double last_time = glfwGetTime();
+  while (!context_->ShouldClose()) {
+    context_->PollEvents();
+
+    double current_time = glfwGetTime();
+    float dt = static_cast<float>(current_time - last_time);
+    last_time = current_time;
+
+    TickSimulatedMetrics(dt);
+
+    if (state_.auto_refresh && (current_time - state_.last_refresh_time > state_.refresh_interval_sec)) {
+      RefreshData("auto");
+    }
+
+    if (state_.should_refresh) {
+      RefreshData("manual");
+      state_.should_refresh = false;
+    }
+
+    RenderFrame();
+  }
+
+  return 0;
+}
+
+void App::RefreshData(const char* reason) {
+  bool ok = loader_.Refresh();
+  state_.last_refresh_time = glfwGetTime();
+  SyncDataBackedState();
+  
+  const auto& status = loader_.GetLastStatus();
+  std::string msg;
+  if (status.error_count > 0) {
+    msg = "Data refreshed with errors (";
+    msg += reason;
+    msg += "): ";
+    msg += status.last_error.empty() ? "see logs" : status.last_error;
+  } else if (!status.AnyOk() && !status.FoundCount()) {
+    msg = "No data sources found (" + std::string(reason) + ")";
+  } else if (!ok) {
+    msg = "Data refresh failed (" + std::string(reason) + ")";
+  } else {
+    msg = "Data refreshed (" + std::string(reason) + ")";
+  }
+  ui::AppendLog(state_, "system", msg, "system");
+  LOG_INFO(msg);
+  
+  // Sync domain visibility
+  for (const auto& [domain, visible] : loader_.GetDomainVisibility()) {
+      if (state_.domain_visibility.find(domain) == state_.domain_visibility.end()) {
+          state_.domain_visibility[domain] = visible;
+      }
+  }
+}
+
+void App::SyncDataBackedState() {
+  const auto& coverage = loader_.GetCoverage();
+  const auto& trends = loader_.GetQualityTrends();
+  const auto& runs = loader_.GetTrainingRuns();
+  const auto& generators = loader_.GetGeneratorStats();
+
+  // Sync Agents
+  auto* indexer = ui::FindAgentByName(state_.agents, "Region Indexer");
+  if (!indexer) {
+    state_.agents.emplace_back();
+    indexer = &state_.agents.back();
+    indexer->name = "Region Indexer";
+    indexer->role = "Librarian";
+  }
+  indexer->data_backed = true;
+  indexer->enabled = true;
+  indexer->tasks_completed = coverage.total_samples;
+  indexer->queue_depth = coverage.sparse_regions;
+  indexer->success_rate = ui::Clamp01(coverage.coverage_score);
+  indexer->status = indexer->queue_depth > 0 ? "Busy" : "Idle";
+
+  float quality_mean = 0.0f;
+  int insufficient = 0;
+  for (const auto& trend : trends) {
+    quality_mean += trend.mean;
+    if (trend.trend_direction == "insufficient") ++insufficient;
+  }
+  if (!trends.empty()) quality_mean /= static_cast<float>(trends.size());
+
+  auto* evaluator = ui::FindAgentByName(state_.agents, "Quality Monitor");
+  if (!evaluator) {
+    state_.agents.emplace_back();
+    evaluator = &state_.agents.back();
+    evaluator->name = "Quality Monitor";
+    evaluator->role = "Evaluator";
+  }
+  evaluator->data_backed = true;
+  evaluator->enabled = true;
+  evaluator->tasks_completed = static_cast<int>(trends.size());
+  evaluator->queue_depth = insufficient;
+  evaluator->success_rate = ui::Clamp01(quality_mean);
+  evaluator->status = evaluator->queue_depth > 0 ? "Review" : "Idle";
+
+  float avg_loss = 0.0f;
+  for (const auto& run : runs) avg_loss += run.final_loss;
+  if (!runs.empty()) avg_loss /= static_cast<float>(runs.size());
+
+  auto* trainer = ui::FindAgentByName(state_.agents, "Trainer Coordinator");
+  if (!trainer) {
+    state_.agents.emplace_back();
+    trainer = &state_.agents.back();
+    trainer->name = "Trainer Coordinator";
+    trainer->role = "Trainer";
+  }
+  trainer->data_backed = true;
+  trainer->enabled = true;
+  trainer->tasks_completed = static_cast<int>(runs.size());
+  trainer->success_rate = avg_loss > 0.0f ? ui::Clamp01(1.0f / (1.0f + avg_loss)) : 0.0f;
+  trainer->status = "Active";
+
+  // Sync Missions
+  state_.missions.erase(std::remove_if(state_.missions.begin(), state_.missions.end(), [](const MissionState& m) { return m.data_backed; }), state_.missions.end());
+  for (const auto& run : runs) {
+    MissionState mission;
+    mission.data_backed = true;
+    mission.owner = run.model_name.empty() ? "Trainer" : run.model_name;
+    mission.name = run.run_id.size() > 12 ? run.run_id.substr(0, 12) : run.run_id;
+    mission.status = "Complete";
+    mission.priority = run.final_loss > avg_loss ? 4 : 3;
+    mission.progress = 1.0f;
+    state_.missions.push_back(std::move(mission));
+  }
+}
+
+void App::SeedDefaultState() {
+  ui::AppendLog(state_, "system", "AFS Studio environment ready.", "system");
+  state_.sparkline_data.resize(30, 0.0f);
+  for (float& f : state_.sparkline_data) f = (float)(rand() % 100) / 100.0f;
+}
+
+void App::TickSimulatedMetrics(float dt) {
+  state_.pulse_timer += dt;
+  if (!state_.simulate_activity) return;
+
+  for (auto& agent : state_.agents) {
+    if (agent.data_backed || !agent.enabled) continue;
+    agent.activity_phase += dt * (0.5f + (float)(rand() % 100) / 100.0f);
+    agent.cpu_pct = 20.0f + 15.0f * (1.0f + sinf(agent.activity_phase));
+    agent.mem_pct = 15.0f + 5.0f * (1.0f + cosf(agent.activity_phase * 0.7f));
+  }
+}
+
+void App::RenderFrame() {
+  ImGui_ImplOpenGL3_NewFrame();
+  ImGui_ImplGlfw_NewFrame();
+  ImGui::NewFrame();
+
+  const ImGuiIO& io = ImGui::GetIO();
+  if (shortcut_manager_.IsTriggered(ui::ActionId::Refresh, io)) state_.should_refresh = true;
+
+  // Graph View Navigation Shortcuts
+  if (shortcut_manager_.IsTriggered(ui::ActionId::ToggleGraphBrowser, io)) {
+    state_.show_graph_browser = !state_.show_graph_browser;
+  }
+  if (shortcut_manager_.IsTriggered(ui::ActionId::ToggleCompanionPanels, io)) {
+    state_.show_companion_panels = !state_.show_companion_panels;
+  }
+  if (shortcut_manager_.IsTriggered(ui::ActionId::NavigateBack, io)) {
+    graph_navigator_.NavigateBack(state_);
+  }
+  if (shortcut_manager_.IsTriggered(ui::ActionId::NavigateForward, io)) {
+    graph_navigator_.NavigateForward(state_);
+  }
+  if (shortcut_manager_.IsTriggered(ui::ActionId::BookmarkGraph, io)) {
+    if (state_.active_graph != PlotKind::None) {
+      graph_navigator_.ToggleBookmark(state_, state_.active_graph);
+    }
+  }
+  
+  // New: Layout Presets
+  if (ImGui::IsKeyPressed(ImGuiKey_F1)) { state_.layout_preset = 0; state_.force_reset_layout = true; }
+  if (ImGui::IsKeyPressed(ImGuiKey_F2)) { state_.layout_preset = 1; state_.force_reset_layout = true; }
+  if (ImGui::IsKeyPressed(ImGuiKey_F3)) { state_.layout_preset = 2; state_.force_reset_layout = true; }
+
+  auto refresh_cb = [this](const char* reason) { state_.should_refresh = true; };
+  auto quit_cb = [this]() { glfwSetWindowShouldClose(context_->GetWindow(), true); };
+
+  ui::RenderMenuBar(state_, refresh_cb, quit_cb, shortcut_manager_, &show_sample_review_, &show_shortcuts_window_);
+  RenderLayout();
+
+  if (show_sample_review_) sample_review_.Render(&show_sample_review_);
+  ui::RenderShortcutsWindow(shortcut_manager_, &show_shortcuts_window_);
+  shortcut_manager_.SaveIfDirty();
+
+  RenderExpandedPlot();
+  RenderFloaters();
+
+  if (state_.show_demo_window) {
+    ImGui::ShowDemoWindow(&state_.show_demo_window);
+    ImPlot::ShowDemoWindow();
+  }
+
+  // Finalize ImGui Frame
+  ImGui::Render();
+  int w, h;
+  glfwGetFramebufferSize(context_->GetWindow(), &w, &h);
+  glViewport(0, 0, w, h);
+  glClearColor(0.07f, 0.07f, 0.09f, 1.00f);
+  glClear(GL_COLOR_BUFFER_BIT);
+  ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+
+  if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable) {
+    GLFWwindow* backup_current_context = glfwGetCurrentContext();
+    ImGui::UpdatePlatformWindows();
+    ImGui::RenderPlatformWindowsDefault();
+    glfwMakeContextCurrent(backup_current_context);
+  }
+  context_->SwapBuffers();
+}
+
+void App::RenderLayout() {
+  bool docking_active = ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_DockingEnable;
+  if (docking_active) {
+    ImGuiID dockspace_id = ImGui::GetID("MainDockSpace");
+    ImGuiViewport* viewport = ImGui::GetMainViewport();
+
+    float status_bar_height = state_.show_status_strip ? 24.0f : 0.0f;
+    ImVec2 dockspace_size = ImVec2(viewport->WorkSize.x, viewport->WorkSize.y - status_bar_height);
+
+    if (state_.force_reset_layout || !ImGui::DockBuilderGetNode(dockspace_id)) {
+      state_.force_reset_layout = false;
+      ImGui::DockBuilderRemoveNode(dockspace_id);
+      ImGui::DockBuilderAddNode(dockspace_id, ImGuiDockNodeFlags_DockSpace);
+      
+      ImGuiID dock_main_id = dockspace_id;
+      
+      // Single-graph view layout:
+      // Left: Graph Browser (15%)
+      // Center: Active Graph View (60%)
+      // Right: Companion Panels (25%)
+      
+      ImGuiID dock_left_id = ImGui::DockBuilderSplitNode(dock_main_id, ImGuiDir_Left, 0.18f, nullptr, &dock_main_id);
+      ImGuiID dock_right_id = ImGui::DockBuilderSplitNode(dock_main_id, ImGuiDir_Right, 0.25f, nullptr, &dock_main_id);
+      
+      // Dock assignments
+      ImGui::DockBuilderDockWindow("GraphBrowser", dock_left_id);
+      ImGui::DockBuilderDockWindow("GraphView", dock_main_id);
+      ImGui::DockBuilderDockWindow("CompanionPanels", dock_right_id);
+
+      ImGui::DockBuilderFinish(dockspace_id);
+    }
+
+    ImGuiWindowFlags window_flags = ImGuiWindowFlags_NoDocking | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoBringToFrontOnFocus | ImGuiWindowFlags_NoNavFocus | ImGuiWindowFlags_NoBackground;
+    
+    ImGui::SetNextWindowPos(viewport->WorkPos);
+    ImGui::SetNextWindowSize(dockspace_size);
+    ImGui::SetNextWindowViewport(viewport->ID);
+    
+    ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
+    ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 0.0f);
+    ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0.0f, 0.0f));
+    ImGui::Begin("MainDockSpaceHost", nullptr, window_flags);
+    ImGui::PopStyleVar(3);
+
+    ImGui::DockSpace(dockspace_id, ImVec2(0.0f, 0.0f), ImGuiDockNodeFlags_None);
+    ImGui::End();
+
+    // Graph Browser - Left sidebar
+    if (state_.show_graph_browser) {
+      ImGui::Begin("GraphBrowser", &state_.show_graph_browser, 
+                   ImGuiWindowFlags_NoCollapse);
+      graph_browser_.Render(state_);
+      ImGui::End();
+    }
+
+    // Graph View - Center content area
+    ImGui::Begin("GraphView", nullptr, 
+                 ImGuiWindowFlags_NoCollapse | 
+                 ImGuiWindowFlags_NoScrollbar | 
+                 ImGuiWindowFlags_NoScrollWithMouse);
+    
+    // Navigation toolbar
+    graph_navigator_.RenderToolbar(state_, graph_browser_);
+    ImGui::Separator();
+    
+    // Render active graph or prompt
+    if (state_.active_graph != PlotKind::None) {
+      ImGui::BeginChild("GraphContent", ImVec2(0, 0), false, 
+                       ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoScrollWithMouse);
+      ui::RenderPlotByKind(state_.active_graph, state_, loader_);
+      ImGui::EndChild();
+    } else {
+      ImGui::Dummy(ImVec2(0, 100));
+      ImGui::TextDisabled("Select a graph from the browser to begin");
+    }
+    
+    ImGui::End();
+
+    // Companion Panels - Right sidebar
+    if (state_.show_companion_panels && state_.active_graph != PlotKind::None) {
+      ImGui::Begin("CompanionPanels", &state_.show_companion_panels, 
+                   ImGuiWindowFlags_NoCollapse);
+      companion_panels_.Render(state_, loader_);
+      ImGui::End();
+    }
+
+    // Render Status Bar as a fixed window at the very bottom
+    if (state_.show_status_strip) {
+        ImGui::SetNextWindowPos(ImVec2(viewport->WorkPos.x, viewport->WorkPos.y + viewport->WorkSize.y - status_bar_height));
+        ImGui::SetNextWindowSize(ImVec2(viewport->WorkSize.x, status_bar_height));
+        ImGui::SetNextWindowViewport(viewport->ID);
+        ImGuiWindowFlags status_flags = ImGuiWindowFlags_NoDecoration | ImGuiWindowFlags_NoInputs | ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoBringToFrontOnFocus | ImGuiWindowFlags_NoNav;
+        
+        ImGui::Begin("StatusBar", nullptr, status_flags);
+        ui::RenderStatusBar(state_, loader_, data_path_);
+        ImGui::End();
+    }
+  }
+
+  // Legacy panels (keeping for backwards compatibility, can be removed later)
+  if (state_.show_inspector && state_.active_graph == PlotKind::None) {
+    ImGui::Begin("InspectorPanel", &state_.show_inspector);
+    ui::RenderInspectorPanel(state_, loader_, fonts_.header, data_path_);
+    ImGui::End();
+  }
+  if (state_.show_dataset_panel) {
+    ImGui::Begin("DatasetPanel", &state_.show_dataset_panel);
+    ui::RenderDatasetPanel(state_, loader_);
+    ImGui::End();
+  }
+
+  // New Chat Panel Viewport
+  if (state_.show_chat_panel) {
+    ImGui::Begin("ChatPanel", &state_.show_chat_panel);
+    ui::RenderChatPanel(state_, llama_client_, [this](const std::string& a, const std::string& m, const std::string& k) {
+        ui::AppendLog(state_, a, m, k);
+    });
+    ImGui::End();
+  }
+
+  // Legacy modular chart panels (deprecated in favor of graph view)
+  if (state_.show_quality_trends) {
+    if (ImGui::Begin("Quality Trends", &state_.show_quality_trends)) {
+        quality_trends_chart_.Render(state_, loader_);
+    }
+    ImGui::End();
+  }
+  if (state_.show_generator_efficiency) {
+    if (ImGui::Begin("Generator Efficiency", &state_.show_generator_efficiency)) {
+        generator_efficiency_chart_.Render(state_, loader_);
+    }
+    ImGui::End();
+  }
+  if (state_.show_coverage_density) {
+    if (ImGui::Begin("Coverage Density", &state_.show_coverage_density)) {
+        coverage_density_chart_.Render(state_, loader_);
+    }
+    ImGui::End();
+  }
+
+  // Removed old workspace content window - graph view replaces it
+
+}
+
+void App::RenderDashboardView() {
+  ui::RenderSummaryRow(state_, loader_, fonts_.ui, fonts_.header);
+  ImGui::Spacing();
+
+  if (state_.focus_chart != PlotKind::None) {
+      // Focus Mode Layout
+      float focus_height = ImGui::GetContentRegionAvail().y * 0.65f;
+      if (focus_height < 400.0f) focus_height = 400.0f;
+      
+      ImGui::BeginChild("FocusArea", ImVec2(0, focus_height), true);
+      ui::RenderPlotByKind(state_.focus_chart, state_, loader_);
+      ImGui::EndChild();
+      
+      ImGui::Spacing();
+      ImGui::Separator();
+      ImGui::Spacing();
+      
+      // Secondary Charts in a scrollable horizontal row or smaller grid
+      ImGui::BeginChild("SecondaryCharts", ImVec2(0, 0), false, ImGuiWindowFlags_AlwaysHorizontalScrollbar);
+      static const std::vector<PlotKind> dashboard_plots = {
+          PlotKind::QualityTrends, PlotKind::GeneratorEfficiency, 
+          PlotKind::CoverageDensity, PlotKind::TrainingLoss, 
+          PlotKind::AgentThroughput, PlotKind::LatentSpace
+      };
+      
+      if (ImGui::BeginTable("SecondaryGrid", (int)dashboard_plots.size(), ImGuiTableFlags_SizingFixedFit)) {
+          for (auto kind : dashboard_plots) {
+              if (kind == state_.focus_chart) continue;
+              ImGui::TableNextColumn();
+              ImGui::BeginChild(std::string("Sec" + std::to_string((int)kind)).c_str(), ImVec2(350, 200), true);
+              ui::RenderPlotByKind(kind, state_, loader_);
+              ImGui::EndChild();
+          }
+          ImGui::EndTable();
+      }
+      ImGui::EndChild();
+  } else {
+    // Standard Grid Layout
+    int columns = state_.chart_columns;
+    if (ImGui::BeginTable("DashboardGrid", columns, ImGuiTableFlags_Resizable | ImGuiTableFlags_Hideable)) {
+      ImGui::TableNextColumn(); ui::RenderQualityChart(state_, loader_);
+      ImGui::TableNextColumn(); ui::RenderGeneratorChart(state_, loader_);
+      ImGui::TableNextColumn(); ui::RenderCoverageChart(state_, loader_);
+      ImGui::TableNextColumn(); ui::RenderTrainingChart(state_, loader_);
+      ImGui::TableNextColumn(); ui::RenderAgentThroughputChart(state_, loader_);
+      ImGui::TableNextColumn(); ui::RenderLatentSpaceChart(state_, loader_);
+      ImGui::EndTable();
+    }
+  }
+}
+
+void App::RenderAnalysisView() {
+  if (ImGui::BeginTable("AnalysisGrid", 2, ImGuiTableFlags_Resizable)) {
+    ImGui::TableNextColumn(); ui::RenderQualityChart(state_, loader_);
+    ImGui::TableNextColumn(); ui::RenderTrainingLossChart(state_, loader_);
+    ImGui::TableNextColumn(); ui::RenderGeneratorMixChart(state_, loader_);
+    ImGui::TableNextColumn(); ui::RenderEmbeddingQualityChart(state_, loader_);
+    ImGui::EndTable();
+  }
+}
+
+void App::RenderOptimizationView() {
+  if (ImGui::BeginTable("OptimizationGrid", 2, ImGuiTableFlags_Resizable)) {
+      ImGui::TableNextColumn(); ui::RenderEffectivenessChart(state_, loader_);
+      ImGui::TableNextColumn(); ui::RenderThresholdOptimizationChart(state_, loader_);
+      ImGui::TableNextColumn(); ui::RenderRejectionChart(state_, loader_);
+      ImGui::TableNextColumn(); ui::RenderDomainCoverageChart(state_, loader_);
+      ImGui::EndTable();
+  }
+}
+
+void App::RenderSystemsView() {
+  if (ImGui::BeginTable("SystemsGrid", 2, ImGuiTableFlags_Resizable)) {
+    ImGui::TableNextColumn(); ui::RenderAgentUtilizationChart(state_, loader_);
+    ImGui::TableNextColumn(); ui::RenderMissionProgressChart(state_, loader_);
+    ImGui::TableNextColumn(); ui::RenderMissionQueueChart(state_, loader_);
+    ImGui::TableNextColumn(); ui::RenderAgentThroughputChart(state_, loader_);
+    ImGui::EndTable();
+  }
+}
+
+void App::RenderCustomGridView() {
+    ui::RenderComparisonView(state_, loader_, fonts_.ui, fonts_.header);
+}
+
+
+
+void App::RenderTrainingView() {
+  if (ImGui::BeginTabBar("TrainingTabs")) {
+    if (ImGui::BeginTabItem("Dashboard")) { RenderDashboardView(); ImGui::EndTabItem(); }
+    if (ImGui::BeginTabItem("Remote Training")) { training_dashboard_widget_.Render(); ImGui::EndTabItem(); }
+    if (ImGui::BeginTabItem("Agents")) { ui::RenderAgentsTab(state_, fonts_.ui, fonts_.header, nullptr); ImGui::EndTabItem(); }
+    if (ImGui::BeginTabItem("Missions")) { ui::RenderMissionsTab(state_, nullptr); ImGui::EndTabItem(); }
+    if (ImGui::BeginTabItem("Services")) { ui::RenderServicesTab(state_, nullptr); ImGui::EndTabItem(); }
+    if (ImGui::BeginTabItem("Tables")) { ui::RenderTablesTab(state_, loader_); ImGui::EndTabItem(); }
+    ImGui::EndTabBar();
+  }
+}
+
+void App::RenderContextView() {
+  ui::RenderContextTab(state_, text_editor_, memory_editor_, nullptr);
+}
+
+void App::RenderModelsView() {
+  model_registry_widget_.Render();
+}
+
+void App::RenderExpandedPlot() {
+    if (state_.expanded_plot == PlotKind::None) return;
+    ImGui::OpenPopup("Expanded Plot");
+    if (ImGui::BeginPopupModal("Expanded Plot", nullptr, ImGuiWindowFlags_AlwaysAutoResize)) {
+        ui::RenderPlotByKind(state_.expanded_plot, state_, loader_);
+        if (ImGui::Button("Close")) state_.expanded_plot = PlotKind::None;
+        ImGui::EndPopup();
+    }
+}
+void App::RenderFloaters() {
+    auto it = state_.active_floaters.begin();
+    while (it != state_.active_floaters.end()) {
+        PlotKind kind = *it;
+        std::string title = std::string("Floater##") + std::to_string(static_cast<int>(kind));
+        
+        bool open = true;
+        ImGui::SetNextWindowSize(ImVec2(600, 400), ImGuiCond_FirstUseEver);
+        if (ImGui::Begin(title.c_str(), &open)) {
+            ui::RenderPlotByKind(kind, state_, loader_);
+        }
+        ImGui::End();
+
+        if (!open) {
+            it = state_.active_floaters.erase(it);
+        } else {
+            ++it;
+        }
+    }
+}
+
+} // namespace viz
+} // namespace afs

apps/studio/src/app.h

@@ -0,0 +1,98 @@
+#pragma once
+
+#include <filesystem>
+#include <memory>
+#include <string>
+#include <functional>
+
+#include <imgui.h>
+#include "data_loader.h"
+#include "models/state.h"
+#include "core/context.h"
+#include "core/assets.h"
+#include "ui/shortcuts.h"
+#include "ui/components/model_registry.h"
+#include "ui/components/training_dashboard.h"
+#include "widgets/text_editor.h"
+#include "widgets/imgui_memory_editor.h"
+#include "widgets/sample_review.h"
+#include "ui/charts/quality_trends.h"
+#include "ui/charts/generator_efficiency.h"
+#include "ui/charts/coverage_density.h"
+#include "ui/components/graph_browser.h"
+#include "ui/components/graph_navigator.h"
+#include "ui/components/companion_panels.h"
+#include "core/llama_client.h"
+
+namespace afs {
+namespace viz {
+
+class App {
+ public:
+  explicit App(const std::string& data_path);
+  ~App() = default;
+
+  int Run();
+
+  DataLoader& loader() { return loader_; }
+  const DataLoader& loader() const { return loader_; }
+
+ private:
+  void RefreshData(const char* reason);
+  void SeedDefaultState();
+  void SyncDataBackedState();
+  void TickSimulatedMetrics(float dt);
+  
+  void RenderFrame();
+  void RenderLayout();
+  
+  // Workspace Views
+  void RenderDashboardView();
+  void RenderAnalysisView();
+  void RenderOptimizationView();
+  void RenderSystemsView();
+  void RenderCustomGridView();
+  void RenderChatView();
+  void RenderTrainingView();
+  void RenderContextView();
+  void RenderModelsView();
+  void RenderExpandedPlot();
+  void RenderFloaters();
+
+  // Infrastructure
+  std::string data_path_;
+  DataLoader loader_;
+  AppState state_;
+  std::unique_ptr<studio::core::GraphicsContext> context_;
+
+  // Editors & Widgets
+  TextEditor text_editor_;
+  MemoryEditorWidget memory_editor_;
+  SampleReviewWidget sample_review_;
+  ui::ShortcutManager shortcut_manager_;
+  studio::ui::ModelRegistryWidget model_registry_widget_;
+  studio::ui::TrainingDashboardWidget training_dashboard_widget_;
+
+  // Modular Charts
+  ui::QualityTrendsChart quality_trends_chart_;
+  ui::GeneratorEfficiencyChart generator_efficiency_chart_;
+  ui::CoverageDensityChart coverage_density_chart_;
+
+  // Graph View System
+  ui::GraphBrowser graph_browser_;
+  ui::GraphNavigator graph_navigator_;
+  ui::CompanionPanels companion_panels_;
+
+  // LLM Chat Client
+  LlamaClient llama_client_;
+
+  // State flags
+  bool show_sample_review_ = false;
+  bool show_shortcuts_window_ = false;
+
+  // Typography
+  studio::core::AssetLoader::Fonts fonts_;
+};
+
+}  // namespace viz
+}  // namespace afs

apps/studio/src/core/assets.cc

@@ -0,0 +1,68 @@
+#include "assets.h"
+#include "logger.h"
+#include "icons.h"
+
+#include <vector>
+
+namespace afs {
+namespace studio {
+namespace core {
+
+AssetLoader::Fonts AssetLoader::LoadFonts() {
+    ImGuiIO& io = ImGui::GetIO();
+    std::filesystem::path font_dir = FindFontDir();
+    
+    if (font_dir.empty()) {
+        LOG_WARN("Could not find font directory, using default ImGui font.");
+        return Fonts{};
+    }
+
+    Fonts fonts;
+    float base_size = 15.0f;
+    float header_size = 18.0f;
+    float mono_size = 14.0f;
+
+    auto MergeIcons = [&](float size) {
+        static const ImWchar icons_ranges[] = { (ImWchar)ICON_MIN_MD, (ImWchar)0xFFFF, 0 };
+        ImFontConfig icons_config;
+        icons_config.MergeMode = true;
+        icons_config.PixelSnapH = true;
+        icons_config.GlyphMinAdvanceX = size;
+        return io.Fonts->AddFontFromFileTTF((font_dir / "MaterialIcons-Regular.ttf").string().c_str(), size, &icons_config, icons_ranges);
+    };
+
+    fonts.ui = io.Fonts->AddFontFromFileTTF((font_dir / "Karla-Regular.ttf").string().c_str(), base_size);
+    MergeIcons(base_size);
+    
+    fonts.header = io.Fonts->AddFontFromFileTTF((font_dir / "Roboto-Medium.ttf").string().c_str(), header_size);
+    MergeIcons(header_size);
+    
+    fonts.mono = io.Fonts->AddFontFromFileTTF((font_dir / "Cousine-Regular.ttf").string().c_str(), mono_size);
+    MergeIcons(mono_size);
+    
+    fonts.icons = fonts.ui;
+
+    LOG_INFO("AssetLoader: Successfully loaded fonts from " + font_dir.string());
+    return fonts;
+}
+
+std::filesystem::path AssetLoader::FindFontDir() {
+    std::filesystem::path current = std::filesystem::current_path();
+    std::vector<std::filesystem::path> search_paths = {
+        current / "assets" / "font",
+        current / "src" / "assets" / "font",
+        current / ".." / ".." / ".." / "apps" / "studio" / "src" / "assets" / "font",
+        current / ".." / ".." / "apps" / "studio" / "src" / "assets" / "font"
+    };
+
+    for (const auto& path : search_paths) {
+        if (std::filesystem::exists(path / "Roboto-Medium.ttf")) {
+            return path;
+        }
+    }
+    return "";
+}
+
+} // namespace core
+} // namespace studio
+} // namespace afs

apps/studio/src/core/assets.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <string>
+#include <filesystem>
+#include <imgui.h>
+
+namespace afs {
+namespace studio {
+namespace core {
+
+class AssetLoader {
+public:
+    struct Fonts {
+        ImFont* ui = nullptr;
+        ImFont* header = nullptr;
+        ImFont* mono = nullptr;
+        ImFont* icons = nullptr;
+    };
+
+    static Fonts LoadFonts();
+
+private:
+    static std::filesystem::path FindFontDir();
+};
+
+} // namespace core
+} // namespace studio
+} // namespace afs

apps/studio/src/core/context.cc

@@ -0,0 +1,94 @@
+#include "context.h"
+#include "logger.h"
+
+#define GL_SILENCE_DEPRECATION
+#include <GLFW/glfw3.h>
+#include <imgui.h>
+#include <imgui_impl_glfw.h>
+#include <imgui_impl_opengl3.h>
+#include <implot.h>
+
+namespace afs {
+namespace studio {
+namespace core {
+
+namespace {
+void GlfwErrorCallback(int error, const char* description) {
+    LOG_ERROR("GLFW Error " + std::to_string(error) + ": " + description);
+}
+} // namespace
+
+GraphicsContext::GraphicsContext(const std::string& title, int width, int height) {
+    if (!InitGLFW(title, width, height)) return;
+    if (!InitImGui()) return;
+}
+
+GraphicsContext::~GraphicsContext() {
+    Shutdown();
+}
+
+bool GraphicsContext::InitGLFW(const std::string& title, int width, int height) {
+    glfwSetErrorCallback(GlfwErrorCallback);
+    if (!glfwInit()) return false;
+
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
+    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
+
+    window_ = glfwCreateWindow(width, height, title.c_str(), nullptr, nullptr);
+    if (!window_) {
+        LOG_ERROR("Failed to create GLFW window.");
+        glfwTerminate();
+        return false;
+    }
+
+    glfwMakeContextCurrent(window_);
+    glfwSwapInterval(1);
+    return true;
+}
+
+bool GraphicsContext::InitImGui() {
+    IMGUI_CHECKVERSION();
+    imgui_ctx_ = ImGui::CreateContext();
+    implot_ctx_ = ImPlot::CreateContext();
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
+    io.ConfigFlags |= ImGuiConfigFlags_DockingEnable;
+    io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable;
+
+    if (!ImGui_ImplGlfw_InitForOpenGL(window_, true)) return false;
+    if (!ImGui_ImplOpenGL3_Init("#version 150")) return false;
+
+    return true;
+}
+
+bool GraphicsContext::ShouldClose() const {
+    return window_ ? glfwWindowShouldClose(window_) : true;
+}
+
+void GraphicsContext::SwapBuffers() {
+    if (window_) glfwSwapBuffers(window_);
+}
+
+void GraphicsContext::PollEvents() {
+    glfwPollEvents();
+}
+
+void GraphicsContext::Shutdown() {
+    if (imgui_ctx_) {
+        ImGui_ImplOpenGL3_Shutdown();
+        ImGui_ImplGlfw_Shutdown();
+        ImPlot::DestroyContext(implot_ctx_);
+        ImGui::DestroyContext(imgui_ctx_);
+    }
+    if (window_) {
+        glfwDestroyWindow(window_);
+        glfwTerminate();
+    }
+}
+
+} // namespace core
+} // namespace studio
+} // namespace afs

apps/studio/src/core/context.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include <string>
+#include <imgui.h>
+
+struct GLFWwindow;
+struct ImPlotContext;
+
+namespace afs {
+namespace studio {
+namespace core {
+
+class GraphicsContext {
+public:
+    GraphicsContext(const std::string& title, int width, int height);
+    ~GraphicsContext();
+
+    bool IsValid() const { return window_ != nullptr; }
+    GLFWwindow* GetWindow() const { return window_; }
+    
+    bool ShouldClose() const;
+    void SwapBuffers();
+    void PollEvents();
+
+private:
+    bool InitGLFW(const std::string& title, int width, int height);
+    bool InitImGui();
+    void Shutdown();
+
+    GLFWwindow* window_ = nullptr;
+    ImGuiContext* imgui_ctx_ = nullptr;
+    ImPlotContext* implot_ctx_ = nullptr;
+};
+
+} // namespace core
+} // namespace studio
+} // namespace afs

apps/studio/src/core/deployment_actions.cc

@@ -0,0 +1,207 @@
+#include "deployment_actions.h"
+
+#include <array>
+#include <cstdio>
+#include <cstdlib>
+#include <filesystem>
+#include <memory>
+
+namespace afs {
+namespace studio {
+
+DeploymentActions::DeploymentActions() {
+  // Find afs CLI
+  const char* home = std::getenv("HOME");
+  if (home) {
+    std::filesystem::path path(home);
+    // Try common locations
+    std::vector<std::filesystem::path> candidates = {
+        path / "Code" / "afs" / ".venv" / "bin" / "afs",
+        path / ".local" / "bin" / "afs",
+        std::filesystem::path("/usr/local/bin/afs"),
+    };
+    for (const auto& p : candidates) {
+      if (std::filesystem::exists(p)) {
+        afs_cli_path_ = p.string();
+        break;
+      }
+    }
+
+    // Find llama.cpp
+    llama_cpp_path_ = (path / "Code" / "llama.cpp").string();
+  }
+}
+
+ActionResult DeploymentActions::ExecuteCommand(
+    const std::vector<std::string>& args, int timeout_seconds) {
+  ActionResult result;
+  result.status = ActionStatus::kRunning;
+
+  // Build command string
+  std::string cmd;
+  for (const auto& arg : args) {
+    if (!cmd.empty()) cmd += " ";
+    // Simple shell escaping
+    if (arg.find(' ') != std::string::npos) {
+      cmd += "\"" + arg + "\"";
+    } else {
+      cmd += arg;
+    }
+  }
+  cmd += " 2>&1";
+
+  // Execute command
+  std::array<char, 4096> buffer;
+  std::string output;
+
+  FILE* pipe = popen(cmd.c_str(), "r");
+  if (!pipe) {
+    result.status = ActionStatus::kFailed;
+    result.error = "Failed to execute command: " + cmd;
+    return result;
+  }
+
+  while (fgets(buffer.data(), buffer.size(), pipe) != nullptr) {
+    output += buffer.data();
+  }
+
+  int ret = pclose(pipe);
+  result.exit_code = WEXITSTATUS(ret);
+  result.output = output;
+
+  if (result.exit_code == 0) {
+    result.status = ActionStatus::kCompleted;
+    result.progress = 1.0f;
+  } else {
+    result.status = ActionStatus::kFailed;
+    result.error = "Command failed with exit code " +
+                   std::to_string(result.exit_code);
+  }
+
+  return result;
+}
+
+ActionResult DeploymentActions::PullModel(const std::string& model_id,
+                                           const std::string& source,
+                                           ProgressCallback callback) {
+  if (afs_cli_path_.empty()) {
+    ActionResult result;
+    result.status = ActionStatus::kFailed;
+    result.error = "afs CLI not found";
+    return result;
+  }
+
+  std::vector<std::string> args = {afs_cli_path_, "models", "pull", model_id};
+  if (source != "auto") {
+    args.push_back("--source");
+    args.push_back(source);
+  }
+
+  if (callback) callback("Pulling model...", 0.1f);
+  auto result = ExecuteCommand(args, 600);  // 10 minute timeout
+  if (callback) callback("Pull complete", 1.0f);
+
+  return result;
+}
+
+ActionResult DeploymentActions::ConvertToGGUF(const std::string& model_id,
+                                               const std::string& quantization,
+                                               ProgressCallback callback) {
+  if (afs_cli_path_.empty()) {
+    ActionResult result;
+    result.status = ActionStatus::kFailed;
+    result.error = "afs CLI not found";
+    return result;
+  }
+
+  std::vector<std::string> args = {afs_cli_path_, "models", "convert",
+                                    model_id,      "gguf"};
+  if (!quantization.empty()) {
+    args.push_back("--quant");
+    args.push_back(quantization);
+  }
+
+  if (callback) callback("Converting to GGUF...", 0.2f);
+  auto result = ExecuteCommand(args, 1800);  // 30 minute timeout
+  if (callback) callback("Conversion complete", 1.0f);
+
+  return result;
+}
+
+ActionResult DeploymentActions::DeployToOllama(const std::string& model_id,
+                                                const std::string& ollama_name,
+                                                const std::string& quantization,
+                                                ProgressCallback callback) {
+  if (afs_cli_path_.empty()) {
+    ActionResult result;
+    result.status = ActionStatus::kFailed;
+    result.error = "afs CLI not found";
+    return result;
+  }
+
+  std::vector<std::string> args = {afs_cli_path_, "models", "deploy",
+                                    model_id,      "ollama"};
+  if (!ollama_name.empty()) {
+    args.push_back("--name");
+    args.push_back(ollama_name);
+  }
+  if (!quantization.empty()) {
+    args.push_back("--quant");
+    args.push_back(quantization);
+  }
+
+  if (callback) callback("Deploying to Ollama...", 0.3f);
+  auto result = ExecuteCommand(args, 1800);
+  if (callback) callback("Deployment complete", 1.0f);
+
+  return result;
+}
+
+ActionResult DeploymentActions::TestModel(const std::string& model_id,
+                                           DeploymentBackend backend,
+                                           const std::string& test_prompt) {
+  if (afs_cli_path_.empty()) {
+    ActionResult result;
+    result.status = ActionStatus::kFailed;
+    result.error = "afs CLI not found";
+    return result;
+  }
+
+  std::string backend_str;
+  switch (backend) {
+    case DeploymentBackend::kOllama:
+      backend_str = "ollama";
+      break;
+    case DeploymentBackend::kLlamaCpp:
+      backend_str = "llama.cpp";
+      break;
+    case DeploymentBackend::kHalextNode:
+      backend_str = "halext-node";
+      break;
+  }
+
+  std::vector<std::string> args = {afs_cli_path_, "models", "test", model_id,
+                                    backend_str};
+
+  return ExecuteCommand(args, 60);  // 1 minute timeout
+}
+
+bool DeploymentActions::IsOllamaRunning() const {
+  // Check if Ollama is running
+  FILE* pipe = popen("pgrep -x ollama 2>/dev/null", "r");
+  if (!pipe) return false;
+
+  char buffer[128];
+  bool running = fgets(buffer, sizeof(buffer), pipe) != nullptr;
+  pclose(pipe);
+
+  return running;
+}
+
+bool DeploymentActions::IsLlamaCppAvailable() const {
+  return !llama_cpp_path_.empty() &&
+         std::filesystem::exists(llama_cpp_path_ + "/llama-quantize");
+}
+
+}  // namespace studio
+}  // namespace afs

apps/studio/src/core/deployment_actions.h

@@ -0,0 +1,101 @@
+#pragma once
+
+#include <functional>
+#include <map>
+#include <optional>
+#include <string>
+#include <vector>
+
+namespace afs {
+namespace studio {
+
+// Result of an async action
+enum class ActionStatus {
+  kPending,
+  kRunning,
+  kCompleted,
+  kFailed
+};
+
+struct ActionResult {
+  ActionStatus status = ActionStatus::kPending;
+  std::string output;
+  std::string error;
+  int exit_code = 0;
+  float progress = 0.0f;
+};
+
+// Deployment target backends
+enum class DeploymentBackend {
+  kOllama,
+  kLlamaCpp,
+  kHalextNode
+};
+
+// Quantization options for GGUF conversion
+struct QuantizationOption {
+  std::string name;
+  std::string description;
+  float size_ratio;  // Relative to F16
+};
+
+// Available quantization options
+inline std::vector<QuantizationOption> GetQuantizationOptions() {
+  return {
+    {"Q3_K_S", "Smallest size, reduced quality", 0.35f},
+    {"Q4_K_M", "Good balance (recommended)", 0.45f},
+    {"Q5_K_M", "Better quality, larger size", 0.55f},
+    {"Q8_0", "Best quality, largest size", 0.65f},
+    {"F16", "Full precision (no quantization)", 1.0f},
+  };
+}
+
+// Deployment actions - executes afs CLI commands
+class DeploymentActions {
+ public:
+  using ProgressCallback = std::function<void(const std::string&, float)>;
+
+  DeploymentActions();
+
+  // Pull model from remote location
+  ActionResult PullModel(const std::string& model_id,
+                         const std::string& source = "auto",
+                         ProgressCallback callback = nullptr);
+
+  // Convert model to GGUF format
+  ActionResult ConvertToGGUF(const std::string& model_id,
+                              const std::string& quantization = "Q4_K_M",
+                              ProgressCallback callback = nullptr);
+
+  // Deploy to Ollama
+  ActionResult DeployToOllama(const std::string& model_id,
+                               const std::string& ollama_name = "",
+                               const std::string& quantization = "Q4_K_M",
+                               ProgressCallback callback = nullptr);
+
+  // Test deployed model
+  ActionResult TestModel(const std::string& model_id,
+                          DeploymentBackend backend,
+                          const std::string& test_prompt = "");
+
+  // Check if Ollama is running
+  bool IsOllamaRunning() const;
+
+  // Check if llama.cpp is available
+  bool IsLlamaCppAvailable() const;
+
+  // Get last error
+  const std::string& GetLastError() const { return last_error_; }
+
+ private:
+  // Execute command and capture output
+  ActionResult ExecuteCommand(const std::vector<std::string>& args,
+                               int timeout_seconds = 300);
+
+  std::string afs_cli_path_;
+  std::string llama_cpp_path_;
+  std::string last_error_;
+};
+
+}  // namespace studio
+}  // namespace afs

apps/studio/src/core/filesystem.cc

@@ -0,0 +1,95 @@
+#include "filesystem.h"
+#include "logger.h"
+
+#include <fstream>
+#include <sstream>
+#include <cstdlib>
+
+namespace afs {
+namespace studio {
+namespace core {
+
+std::filesystem::path FileSystem::ResolvePath(const std::string& path_str) {
+    if (path_str.empty()) return {};
+    
+    if (path_str[0] == '~') {
+        const char* home = std::getenv("HOME");
+        if (home) {
+            return std::filesystem::path(home) / path_str.substr(2);
+        }
+    }
+    
+    return std::filesystem::path(path_str);
+}
+
+bool FileSystem::Exists(const std::filesystem::path& path) {
+    try {
+        std::error_code ec;
+        bool exists = std::filesystem::exists(path, ec);
+        if (ec) {
+            // "Device not configured" and other disk errors should just return false
+            return false;
+        }
+        return exists;
+    } catch (...) {
+        return false;
+    }
+}
+
+std::optional<std::string> FileSystem::ReadFile(const std::filesystem::path& path) {
+    if (!Exists(path)) {
+        LOG_WARN("File not found: " + path.string());
+        return std::nullopt;
+    }
+
+    std::ifstream file(path, std::ios::in | std::ios::binary);
+    if (!file.is_open()) {
+        LOG_ERROR("Failed to open file: " + path.string());
+        return std::nullopt;
+    }
+
+    std::ostringstream ss;
+    ss << file.rdbuf();
+    return ss.str();
+}
+
+std::optional<nlohmann::json> FileSystem::ReadJson(const std::filesystem::path& path, std::string* error) {
+    auto content = ReadFile(path);
+    if (!content) {
+        if (error) *error = "Could not read file";
+        return std::nullopt;
+    }
+
+    try {
+        return nlohmann::json::parse(*content);
+    } catch (const nlohmann::json::exception& e) {
+        std::string err = "JSON parse error in " + path.string() + ": " + e.what();
+        LOG_ERROR(err);
+        if (error) *error = err;
+        return std::nullopt;
+    }
+}
+
+bool FileSystem::WriteFile(const std::filesystem::path& path, const std::string& content) {
+    std::ofstream file(path, std::ios::out | std::ios::binary);
+    if (!file.is_open()) {
+        LOG_ERROR("Failed to open file for writing: " + path.string());
+        return false;
+    }
+    file << content;
+    return true;
+}
+
+bool FileSystem::EnsureDirectory(const std::filesystem::path& path) {
+    if (Exists(path)) return true;
+    try {
+        return std::filesystem::create_directories(path);
+    } catch (const std::filesystem::filesystem_error& e) {
+        LOG_ERROR("Failed to create directory " + path.string() + ": " + e.what());
+        return false;
+    }
+}
+
+} // namespace core
+} // namespace studio
+} // namespace afs

apps/studio/src/core/filesystem.h

@@ -0,0 +1,35 @@
+#pragma once
+
+#include <filesystem>
+#include <string>
+#include <optional>
+#include <nlohmann/json.hpp>
+
+namespace afs {
+namespace studio {
+namespace core {
+
+class FileSystem {
+public:
+    /// Resolve a home-relative path (e.g., ~/.context) to an absolute path.
+    static std::filesystem::path ResolvePath(const std::string& path_str);
+
+    /// Check if a path exists.
+    static bool Exists(const std::filesystem::path& path);
+
+    /// Read the entire content of a file as a string.
+    static std::optional<std::string> ReadFile(const std::filesystem::path& path);
+
+    /// Read and parse a JSON file.
+    static std::optional<nlohmann::json> ReadJson(const std::filesystem::path& path, std::string* error = nullptr);
+
+    /// Write a string to a file.
+    static bool WriteFile(const std::filesystem::path& path, const std::string& content);
+
+    /// Ensure a directory exists.
+    static bool EnsureDirectory(const std::filesystem::path& path);
+};
+
+} // namespace core
+} // namespace studio
+} // namespace afs

apps/studio/src/core/llama_client.cc

@@ -0,0 +1,378 @@
+#include "llama_client.h"
+
+#include <cstdlib>
+#include <cstring>
+#include <unistd.h>
+#include <signal.h>
+#include <sys/wait.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <sstream>
+#include <iostream>
+#include <filesystem>
+
+namespace afs::viz {
+
+LlamaClient::LlamaClient() {
+  status_message_ = "Not configured";
+}
+
+LlamaClient::~LlamaClient() {
+  StopGeneration();
+  if (generation_thread_.joinable()) {
+    generation_thread_.join();
+  }
+}
+
+void LlamaClient::SetConfig(const LlamaConfig& config) {
+  std::lock_guard<std::mutex> lock(mutex_);
+  config_ = config;
+  status_message_ = "Configured, checking health...";
+}
+
+std::string LlamaClient::ExpandPath(const std::string& path) {
+  if (path.empty()) return path;
+  if (path[0] == '~') {
+    const char* home = getenv("HOME");
+    if (home) {
+      return std::string(home) + path.substr(1);
+    }
+  }
+  return path;
+}
+
+bool LlamaClient::CheckHealth() {
+  std::lock_guard<std::mutex> lock(mutex_);
+
+  std::string cli_path = ExpandPath(config_.llama_cli_path);
+
+  // Check if llama-cli exists
+  if (!std::filesystem::exists(cli_path)) {
+    status_message_ = "llama-cli not found: " + cli_path;
+    is_ready_ = false;
+    return false;
+  }
+
+  // Check if model exists (if specified)
+  if (!config_.model_path.empty()) {
+    std::string model_path = ExpandPath(config_.model_path);
+    if (!std::filesystem::exists(model_path)) {
+      status_message_ = "Model not found: " + model_path;
+      is_ready_ = false;
+      return false;
+    }
+  }
+
+  // Check RPC connectivity if enabled
+  if (config_.use_rpc && !config_.rpc_servers.empty()) {
+    // Parse first server
+    size_t colon = config_.rpc_servers.find(':');
+    if (colon != std::string::npos) {
+      std::string host = config_.rpc_servers.substr(0, colon);
+      std::string port_str = config_.rpc_servers.substr(colon + 1);
+      // Remove any comma for multiple servers
+      size_t comma = port_str.find(',');
+      if (comma != std::string::npos) {
+        port_str = port_str.substr(0, comma);
+      }
+
+      // Quick TCP check
+      std::string cmd = "nc -z -w 2 " + host + " " + port_str + " 2>/dev/null";
+      int result = system(cmd.c_str());
+      if (result != 0) {
+        status_message_ = "RPC server unreachable: " + host + ":" + port_str;
+        is_ready_ = false;
+        return false;
+      }
+    }
+  }
+
+  status_message_ = "Ready";
+  is_ready_ = true;
+  return true;
+}
+
+std::string LlamaClient::GetStatusMessage() const {
+  std::lock_guard<std::mutex> lock(const_cast<std::mutex&>(mutex_));
+  return status_message_;
+}
+
+std::string LlamaClient::BuildPrompt(const std::string& user_message) {
+  std::ostringstream prompt;
+
+  // Build chat history in ChatML format
+  prompt << "<|im_start|>system\nYou are a helpful AI assistant.<|im_end|>\n";
+
+  // History already contains the current user message (added before calling BuildPrompt)
+  // So we just iterate through all history
+  for (const auto& msg : history_) {
+    prompt << "<|im_start|>" << msg.role << "\n" << msg.content << "<|im_end|>\n";
+  }
+
+  prompt << "<|im_start|>assistant\n";
+
+  return prompt.str();
+}
+
+void LlamaClient::SendMessage(const std::string& message,
+                               TokenCallback on_token,
+                               CompletionCallback on_complete) {
+  if (is_generating_) {
+    if (on_complete) {
+      on_complete(false, "Already generating");
+    }
+    return;
+  }
+
+  if (!is_ready_) {
+    if (on_complete) {
+      on_complete(false, "Client not ready: " + status_message_);
+    }
+    return;
+  }
+
+  // Add user message to history
+  history_.push_back({"user", message});
+
+  // Build prompt
+  std::string prompt = BuildPrompt(message);
+
+  // Start generation in background thread
+  if (generation_thread_.joinable()) {
+    generation_thread_.join();
+  }
+
+  is_generating_ = true;
+  stop_requested_ = false;
+
+  generation_thread_ = std::thread(&LlamaClient::GenerationThread, this,
+                                    prompt, on_token, on_complete);
+}
+
+void LlamaClient::GenerationThread(const std::string& prompt,
+                                    TokenCallback on_token,
+                                    CompletionCallback on_complete) {
+  std::string cli_path = ExpandPath(config_.llama_cli_path);
+  std::string model_path = ExpandPath(config_.model_path);
+
+  // Build command arguments
+  std::vector<std::string> args;
+  args.push_back(cli_path);
+
+  if (config_.use_rpc && !config_.rpc_servers.empty()) {
+    args.push_back("--rpc");
+    args.push_back(config_.rpc_servers);
+  }
+
+  args.push_back("-m");
+  args.push_back(model_path);
+  args.push_back("-c");
+  args.push_back(std::to_string(config_.context_size));
+  args.push_back("-n");
+  args.push_back(std::to_string(config_.n_predict));
+  args.push_back("--temp");
+  args.push_back(std::to_string(config_.temperature));
+  args.push_back("--top-p");
+  args.push_back(std::to_string(config_.top_p));
+  args.push_back("-p");
+  args.push_back(prompt);
+  args.push_back("--no-display-prompt");
+  args.push_back("--single-turn");  // Process prompt and exit, don't wait for input
+  args.push_back("-e");  // Escape sequences
+
+  // Create pipe for stdout
+  int stdout_pipe[2];
+  if (pipe(stdout_pipe) < 0) {
+    is_generating_ = false;
+    if (on_complete) on_complete(false, "Failed to create pipe");
+    return;
+  }
+
+  // Fork and exec
+  pid_t pid = fork();
+  if (pid < 0) {
+    close(stdout_pipe[0]);
+    close(stdout_pipe[1]);
+    is_generating_ = false;
+    if (on_complete) on_complete(false, "Failed to fork");
+    return;
+  }
+
+  if (pid == 0) {
+    // Child process
+    close(stdout_pipe[0]);
+    dup2(stdout_pipe[1], STDOUT_FILENO);
+    dup2(stdout_pipe[1], STDERR_FILENO);
+    close(stdout_pipe[1]);
+
+    // Convert args to char**
+    std::vector<char*> argv;
+    for (auto& arg : args) {
+      argv.push_back(const_cast<char*>(arg.c_str()));
+    }
+    argv.push_back(nullptr);
+
+    execvp(argv[0], argv.data());
+    _exit(127);
+  }
+
+  // Parent process
+  close(stdout_pipe[1]);
+  current_pid_ = pid;
+
+  // Set non-blocking
+  int flags = fcntl(stdout_pipe[0], F_GETFL, 0);
+  fcntl(stdout_pipe[0], F_SETFL, flags | O_NONBLOCK);
+
+  std::string accumulated_response;
+  std::string pending_buffer;  // Buffer to accumulate partial lines
+  char buffer[256];
+  bool in_preamble = true;  // Skip all preamble until we see actual generation
+
+  {
+    std::lock_guard<std::mutex> lock(mutex_);
+    status_message_ = "Loading model...";
+  }
+
+  while (!stop_requested_) {
+    struct pollfd pfd;
+    pfd.fd = stdout_pipe[0];
+    pfd.events = POLLIN;
+
+    int poll_result = poll(&pfd, 1, 100);  // 100ms timeout
+
+    if (poll_result > 0 && (pfd.revents & POLLIN)) {
+      ssize_t n = read(stdout_pipe[0], buffer, sizeof(buffer) - 1);
+      if (n > 0) {
+        buffer[n] = '\0';
+        std::string chunk(buffer);
+
+        // Skip preamble (ggml logs, loading messages, spinner, banner)
+        if (in_preamble) {
+          // Check for signs we're still in preamble
+          bool is_preamble =
+              chunk.find("ggml_") != std::string::npos ||
+              chunk.find("Loading") != std::string::npos ||
+              chunk.find("llama_") != std::string::npos ||
+              chunk.find("GPU") != std::string::npos ||
+              chunk.find("Metal") != std::string::npos ||
+              chunk.find("tensor") != std::string::npos ||
+              chunk.find("simd") != std::string::npos ||
+              chunk.find("MTL") != std::string::npos ||
+              chunk.find("build") != std::string::npos ||
+              chunk.find("rpc") != std::string::npos ||
+              chunk.find("CUDA") != std::string::npos ||
+              chunk.find("Backend") != std::string::npos ||
+              chunk.find("modalities") != std::string::npos ||
+              chunk.find("available commands") != std::string::npos ||
+              chunk.find("/exit") != std::string::npos ||
+              chunk.find("/regen") != std::string::npos ||
+              chunk.find("/clear") != std::string::npos ||
+              chunk.find("/read") != std::string::npos ||
+              // ASCII art banner
+              chunk.find("▄") != std::string::npos ||
+              chunk.find("█") != std::string::npos ||
+              chunk.find("▀") != std::string::npos ||
+              // Spinner characters (often appear alone)
+              (chunk.length() <= 3 && (
+                chunk.find("|") != std::string::npos ||
+                chunk.find("-") != std::string::npos ||
+                chunk.find("\\") != std::string::npos ||
+                chunk.find("/") != std::string::npos));
+
+          if (is_preamble) {
+            // Update status with loading progress hints
+            if (chunk.find("Loading") != std::string::npos) {
+              std::lock_guard<std::mutex> lock(mutex_);
+              status_message_ = "Loading model...";
+            } else if (chunk.find("rpc") != std::string::npos) {
+              std::lock_guard<std::mutex> lock(mutex_);
+              status_message_ = "Connecting to RPC...";
+            }
+            continue;
+          }
+
+          // We've passed the preamble
+          in_preamble = false;
+          {
+            std::lock_guard<std::mutex> lock(mutex_);
+            status_message_ = "Generating...";
+          }
+        }
+
+        accumulated_response += chunk;
+        if (on_token) on_token(chunk);
+      } else if (n == 0) {
+        break;  // EOF
+      }
+    } else if (poll_result == 0) {
+      // Timeout, check if process is still running
+      int status;
+      pid_t result = waitpid(pid, &status, WNOHANG);
+      if (result == pid) {
+        // Process finished, read any remaining output
+        ssize_t remaining;
+        while ((remaining = read(stdout_pipe[0], buffer, sizeof(buffer) - 1)) > 0) {
+          buffer[remaining] = '\0';
+          std::string chunk(buffer);
+          accumulated_response += chunk;
+          if (on_token) on_token(chunk);
+        }
+        break;
+      }
+    }
+  }
+
+  close(stdout_pipe[0]);
+
+  // Stop if requested
+  if (stop_requested_ && current_pid_ > 0) {
+    kill(current_pid_, SIGTERM);
+    usleep(100000);  // 100ms
+    kill(current_pid_, SIGKILL);
+  }
+
+  // Wait for process
+  int status;
+  waitpid(pid, &status, 0);
+  current_pid_ = -1;
+
+  // Add assistant response to history
+  if (!accumulated_response.empty()) {
+    // Clean up response (remove ChatML end token if present)
+    size_t end_pos = accumulated_response.find("<|im_end|>");
+    if (end_pos != std::string::npos) {
+      accumulated_response = accumulated_response.substr(0, end_pos);
+    }
+    history_.push_back({"assistant", accumulated_response});
+  }
+
+  {
+    std::lock_guard<std::mutex> lock(mutex_);
+    status_message_ = "Ready";
+  }
+
+  is_generating_ = false;
+
+  if (on_complete) {
+    if (stop_requested_) {
+      on_complete(false, "Stopped by user");
+    } else {
+      on_complete(true, "");
+    }
+  }
+}
+
+void LlamaClient::StopGeneration() {
+  stop_requested_ = true;
+  if (current_pid_ > 0) {
+    kill(current_pid_, SIGTERM);
+  }
+}
+
+void LlamaClient::ClearHistory() {
+  std::lock_guard<std::mutex> lock(mutex_);
+  history_.clear();
+}
+
+}  // namespace afs::viz

apps/studio/src/core/llama_client.h

@@ -0,0 +1,81 @@
+#pragma once
+
+#include <string>
+#include <vector>
+#include <deque>
+#include <functional>
+#include <thread>
+#include <mutex>
+#include <atomic>
+#include <condition_variable>
+
+namespace afs::viz {
+
+struct ChatMessage {
+  std::string role;  // "user", "assistant", "system"
+  std::string content;
+};
+
+struct LlamaConfig {
+  std::string llama_cli_path = "~/llama.cpp/build/bin/llama-cli";
+  std::string model_path;
+  std::string rpc_servers;  // Comma-separated list of host:port
+  int context_size = 4096;
+  int n_predict = 256;
+  float temperature = 0.7f;
+  float top_p = 0.9f;
+  bool use_rpc = true;
+};
+
+// Callback for streaming tokens
+using TokenCallback = std::function<void(const std::string&)>;
+using CompletionCallback = std::function<void(bool success, const std::string& error)>;
+
+class LlamaClient {
+ public:
+  LlamaClient();
+  ~LlamaClient();
+
+  // Configuration
+  void SetConfig(const LlamaConfig& config);
+  const LlamaConfig& GetConfig() const { return config_; }
+
+  // Connection management
+  bool CheckHealth();
+  bool IsReady() const { return is_ready_; }
+  bool IsGenerating() const { return is_generating_; }
+  std::string GetStatusMessage() const;
+
+  // Chat interface
+  void SendMessage(const std::string& message,
+                   TokenCallback on_token,
+                   CompletionCallback on_complete);
+  void StopGeneration();
+  void ClearHistory();
+
+  // History access
+  const std::vector<ChatMessage>& GetHistory() const { return history_; }
+
+ private:
+  void GenerationThread(const std::string& prompt,
+                        TokenCallback on_token,
+                        CompletionCallback on_complete);
+  std::string BuildPrompt(const std::string& user_message);
+  std::string ExpandPath(const std::string& path);
+
+  LlamaConfig config_;
+  std::vector<ChatMessage> history_;
+
+  std::atomic<bool> is_ready_{false};
+  std::atomic<bool> is_generating_{false};
+  std::atomic<bool> stop_requested_{false};
+
+  std::thread generation_thread_;
+  std::mutex mutex_;
+  std::string status_message_;
+
+  // Process management
+  pid_t current_pid_ = -1;
+};
+
+}  // namespace afs::viz

apps/studio/src/core/logger.cc

@@ -0,0 +1,53 @@
+#include "logger.h"
+
+#include <chrono>
+#include <iomanip>
+#include <sstream>
+
+namespace afs {
+namespace studio {
+namespace core {
+
+Logger& Logger::GetInstance() {
+    static Logger instance;
+    return instance;
+}
+
+void Logger::Log(LogLevel level, const std::string& message) {
+    std::lock_guard<std::mutex> lock(mutex_);
+    
+    std::string ts = GetTimestamp();
+    entries_.push_back({level, message, ts});
+    
+    // Output to console as well
+    std::ostream& out = (level == LogLevel::kError || level == LogLevel::kWarn) ? std::cerr : std::cout;
+    out << "[" << ts << "] [" << LevelToString(level) << "] " << message << std::endl;
+
+    // Cap entries to prevent memory leaks in long-running app
+    if (entries_.size() > 1000) {
+        entries_.erase(entries_.begin(), entries_.begin() + 100);
+    }
+}
+
+std::string Logger::GetTimestamp() {
+    auto now = std::chrono::system_clock::now();
+    auto in_time_t = std::chrono::system_clock::to_time_t(now);
+    std::stringstream ss;
+    ss << std::put_time(std::localtime(&in_time_t), "%H:%M:%S");
+    return ss.str();
+}
+
+const char* Logger::LevelToString(LogLevel level) {
+    switch (level) {
+        case LogLevel::kTrace: return "TRACE";
+        case LogLevel::kDebug: return "DEBUG";
+        case LogLevel::kInfo:  return "INFO";
+        case LogLevel::kWarn:  return "WARN";
+        case LogLevel::kError: return "ERROR";
+        default: return "UNKNOWN";
+    }
+}
+
+} // namespace core
+} // namespace studio
+} // namespace afs

apps/studio/src/core/logger.h

@@ -0,0 +1,63 @@
+#pragma once
+
+#include <string>
+#include <vector>
+#include <mutex>
+#include <iostream>
+
+namespace afs {
+namespace studio {
+namespace core {
+
+enum class LogLevel {
+    kTrace,
+    kDebug,
+    kInfo,
+    kWarn,
+    kError
+};
+
+struct LogEntry {
+    LogLevel level;
+    std::string message;
+    std::string timestamp;
+};
+
+class Logger {
+public:
+    static Logger& GetInstance();
+
+    void Log(LogLevel level, const std::string& message);
+    
+    void Trace(const std::string& message) { Log(LogLevel::kTrace, message); }
+    void Debug(const std::string& message) { Log(LogLevel::kDebug, message); }
+    void Info(const std::string& message) { Log(LogLevel::kInfo, message); }
+    void Warn(const std::string& message) { Log(LogLevel::kWarn, message); }
+    void Error(const std::string& message) { Log(LogLevel::kError, message); }
+
+    const std::vector<LogEntry>& GetEntries() const { return entries_; }
+    void Clear() { std::lock_guard<std::mutex> lock(mutex_); entries_.clear(); }
+
+private:
+    Logger() = default;
+    ~Logger() = default;
+    Logger(const Logger&) = delete;
+    Logger& operator=(const Logger&) = delete;
+
+    std::string GetTimestamp();
+    const char* LevelToString(LogLevel level);
+
+    std::vector<LogEntry> entries_;
+    mutable std::mutex mutex_;
+};
+
+// Global convenience macros
+#define LOG_TRACE(msg) ::afs::studio::core::Logger::GetInstance().Trace(msg)
+#define LOG_DEBUG(msg) ::afs::studio::core::Logger::GetInstance().Debug(msg)
+#define LOG_INFO(msg)  ::afs::studio::core::Logger::GetInstance().Info(msg)
+#define LOG_WARN(msg)  ::afs::studio::core::Logger::GetInstance().Warn(msg)
+#define LOG_ERROR(msg) ::afs::studio::core::Logger::GetInstance().Error(msg)
+
+} // namespace core
+} // namespace studio
+} // namespace afs

apps/studio/src/core/registry_reader.cc

@@ -0,0 +1,258 @@
+#include "registry_reader.h"
+#include "logger.h"
+#include "filesystem.h"
+
+#include <fstream>
+
+namespace afs {
+namespace studio {
+
+RegistryReader::RegistryReader() : registry_path_(ResolveDefaultPath()) {}
+
+RegistryReader::RegistryReader(const std::filesystem::path& registry_path)
+    : registry_path_(registry_path) {}
+
+std::filesystem::path RegistryReader::ResolveDefaultPath() const {
+  return core::FileSystem::ResolvePath("~/.context/models/registry.json");
+}
+
+bool RegistryReader::Exists() const {
+  return core::FileSystem::Exists(registry_path_);
+}
+
+bool RegistryReader::Load(std::string* error) {
+  last_error_.clear();
+  models_.clear();
+
+  if (!Exists()) {
+    last_error_ = "Registry file not found: " + registry_path_.string();
+    LOG_ERROR(last_error_);
+    if (error) *error = last_error_;
+    return false;
+  }
+  LOG_INFO("RegistryReader: Loading from " + registry_path_.string());
+
+  std::ifstream file(registry_path_);
+  if (!file.is_open()) {
+    last_error_ = "Failed to open registry file";
+    if (error) *error = last_error_;
+    return false;
+  }
+
+  models_.clear();
+
+  try {
+    nlohmann::json root = nlohmann::json::parse(file);
+
+    // Parse registry metadata
+    if (root.contains("updated_at")) {
+      last_load_time_ = root["updated_at"].get<std::string>();
+    }
+
+    // Parse models
+    if (root.contains("models") && root["models"].is_object()) {
+      for (auto& [model_id, model_json] : root["models"].items()) {
+        ModelMetadata model;
+        if (ParseModel(model_json, &model)) {
+          model.model_id = model_id;  // Ensure ID matches key
+          models_.push_back(std::move(model));
+        }
+      }
+    }
+
+    LOG_INFO("RegistryReader: Successfully loaded " + std::to_string(models_.size()) + " models");
+    return true;
+
+  } catch (const nlohmann::json::exception& e) {
+    last_error_ = std::string("JSON parse error: ") + e.what();
+    if (error) *error = last_error_;
+    return false;
+  }
+}
+
+bool RegistryReader::Reload(std::string* error) {
+  return Load(error);
+}
+
+const ModelMetadata* RegistryReader::GetModel(
+    const std::string& model_id) const {
+  for (const auto& model : models_) {
+    if (model.model_id == model_id) {
+      return &model;
+    }
+  }
+  return nullptr;
+}
+
+std::vector<const ModelMetadata*> RegistryReader::FilterByRole(
+    const std::string& role) const {
+  std::vector<const ModelMetadata*> result;
+  for (const auto& model : models_) {
+    if (model.role == role) {
+      result.push_back(&model);
+    }
+  }
+  return result;
+}
+
+std::vector<const ModelMetadata*> RegistryReader::FilterByLocation(
+    const std::string& location) const {
+  std::vector<const ModelMetadata*> result;
+  for (const auto& model : models_) {
+    if (model.locations.count(location) > 0) {
+      result.push_back(&model);
+    }
+  }
+  return result;
+}
+
+std::vector<const ModelMetadata*> RegistryReader::FilterByBackend(
+    const std::string& backend) const {
+  std::vector<const ModelMetadata*> result;
+  for (const auto& model : models_) {
+    for (const auto& b : model.deployed_backends) {
+      if (b == backend) {
+        result.push_back(&model);
+        break;
+      }
+    }
+  }
+  return result;
+}
+
+bool RegistryReader::ParseModel(const nlohmann::json& json,
+                                 ModelMetadata* model) const {
+  if (!json.is_object()) return false;
+
+  // Helper to safely get string
+  auto get_string = [&](const char* key) -> std::string {
+    if (json.contains(key) && json[key].is_string()) {
+      return json[key].get<std::string>();
+    }
+    return "";
+  };
+
+  // Helper to safely get optional string
+  auto get_optional_string =
+      [&](const char* key) -> std::optional<std::string> {
+    if (json.contains(key) && json[key].is_string()) {
+      return json[key].get<std::string>();
+    }
+    return std::nullopt;
+  };
+
+  // Helper to safely get int
+  auto get_int = [&](const char* key) -> int {
+    if (json.contains(key) && json[key].is_number()) {
+      return json[key].get<int>();
+    }
+    return 0;
+  };
+
+  // Helper to safely get optional float
+  auto get_optional_float = [&](const char* key) -> std::optional<float> {
+    if (json.contains(key) && json[key].is_number()) {
+      return json[key].get<float>();
+    }
+    return std::nullopt;
+  };
+
+  // Identity
+  model->model_id = get_string("model_id");
+  model->display_name = get_string("display_name");
+  model->version = get_string("version");
+
+  // Training info
+  model->base_model = get_string("base_model");
+  model->role = get_string("role");
+  model->group = get_string("group");
+  model->training_date = get_string("training_date");
+  model->training_duration_minutes = get_int("training_duration_minutes");
+
+  // Dataset info
+  model->dataset_name = get_string("dataset_name");
+  model->dataset_path = get_string("dataset_path");
+  model->train_samples = get_int("train_samples");
+  model->val_samples = get_int("val_samples");
+  model->test_samples = get_int("test_samples");
+
+  // Dataset quality
+  if (json.contains("dataset_quality") && json["dataset_quality"].is_object()) {
+    const auto& q = json["dataset_quality"];
+    if (q.contains("acceptance_rate") && q["acceptance_rate"].is_number()) {
+      model->dataset_quality.acceptance_rate = q["acceptance_rate"].get<float>();
+    }
+    if (q.contains("rejection_rate") && q["rejection_rate"].is_number()) {
+      model->dataset_quality.rejection_rate = q["rejection_rate"].get<float>();
+    }
+    if (q.contains("avg_diversity") && q["avg_diversity"].is_number()) {
+      model->dataset_quality.avg_diversity = q["avg_diversity"].get<float>();
+    }
+  }
+
+  // Training metrics
+  model->final_loss = get_optional_float("final_loss");
+  model->best_loss = get_optional_float("best_loss");
+  model->eval_loss = get_optional_float("eval_loss");
+  model->perplexity = get_optional_float("perplexity");
+
+  // Hardware
+  model->hardware = get_string("hardware");
+  model->device = get_string("device");
+
+  // Files
+  model->model_path = get_string("model_path");
+  model->checkpoint_path = get_optional_string("checkpoint_path");
+  model->adapter_path = get_optional_string("adapter_path");
+
+  // Formats
+  if (json.contains("formats") && json["formats"].is_array()) {
+    for (const auto& fmt : json["formats"]) {
+      if (fmt.is_string()) {
+        model->formats.push_back(fmt.get<std::string>());
+      }
+    }
+  }
+
+  // Locations
+  if (json.contains("locations") && json["locations"].is_object()) {
+    for (auto& [loc, path] : json["locations"].items()) {
+      if (path.is_string()) {
+        model->locations[loc] = path.get<std::string>();
+      }
+    }
+  }
+  model->primary_location = get_string("primary_location");
+
+  // Serving
+  if (json.contains("deployed_backends") &&
+      json["deployed_backends"].is_array()) {
+    for (const auto& backend : json["deployed_backends"]) {
+      if (backend.is_string()) {
+        model->deployed_backends.push_back(backend.get<std::string>());
+      }
+    }
+  }
+  model->ollama_model_name = get_optional_string("ollama_model_name");
+  model->halext_node_id = get_optional_string("halext_node_id");
+
+  // Metadata
+  model->git_commit = get_optional_string("git_commit");
+  model->notes = get_string("notes");
+
+  if (json.contains("tags") && json["tags"].is_array()) {
+    for (const auto& tag : json["tags"]) {
+      if (tag.is_string()) {
+        model->tags.push_back(tag.get<std::string>());
+      }
+    }
+  }
+
+  model->created_at = get_string("created_at");
+  model->updated_at = get_string("updated_at");
+
+  return true;
+}
+
+}  // namespace studio
+}  // namespace afs

apps/studio/src/core/registry_reader.h

@@ -0,0 +1,136 @@
+#pragma once
+
+#include <nlohmann/json.hpp>
+
+#include <filesystem>
+#include <map>
+#include <optional>
+#include <string>
+#include <vector>
+
+namespace afs {
+namespace studio {
+
+// Model location types
+enum class ModelLocation { kMac, kWindows, kCloud, kHalext };
+
+// Serving backend types
+enum class ServingBackend { kOllama, kLlamaCpp, kVllm, kTransformers, kHalextNode };
+
+// Dataset quality metrics
+struct DatasetQuality {
+  float acceptance_rate = 0.0f;
+  float rejection_rate = 0.0f;
+  float avg_diversity = 0.0f;
+};
+
+// Model metadata matching Python ModelMetadata dataclass
+struct ModelMetadata {
+  // Identity
+  std::string model_id;
+  std::string display_name;
+  std::string version;
+
+  // Training info
+  std::string base_model;
+  std::string role;
+  std::string group;
+  std::string training_date;
+  int training_duration_minutes = 0;
+
+  // Dataset info
+  std::string dataset_name;
+  std::string dataset_path;
+  int train_samples = 0;
+  int val_samples = 0;
+  int test_samples = 0;
+  DatasetQuality dataset_quality;
+
+  // Training metrics
+  std::optional<float> final_loss;
+  std::optional<float> best_loss;
+  std::optional<float> eval_loss;
+  std::optional<float> perplexity;
+
+  // Hardware
+  std::string hardware;
+  std::string device;
+
+  // Files
+  std::string model_path;
+  std::optional<std::string> checkpoint_path;
+  std::optional<std::string> adapter_path;
+
+  // Formats available
+  std::vector<std::string> formats;
+
+  // Locations (location -> path)
+  std::map<std::string, std::string> locations;
+  std::string primary_location;
+
+  // Serving
+  std::vector<std::string> deployed_backends;
+  std::optional<std::string> ollama_model_name;
+  std::optional<std::string> halext_node_id;
+
+  // Metadata
+  std::optional<std::string> git_commit;
+  std::string notes;
+  std::vector<std::string> tags;
+  std::string created_at;
+  std::string updated_at;
+};
+
+// Registry reader class
+class RegistryReader {
+ public:
+  RegistryReader();
+  explicit RegistryReader(const std::filesystem::path& registry_path);
+
+  // Load registry from disk
+  bool Load(std::string* error = nullptr);
+
+  // Reload registry (refresh from disk)
+  bool Reload(std::string* error = nullptr);
+
+  // Get all models
+  const std::vector<ModelMetadata>& GetModels() const { return models_; }
+
+  // Get model by ID
+  const ModelMetadata* GetModel(const std::string& model_id) const;
+
+  // Filter models by role
+  std::vector<const ModelMetadata*> FilterByRole(const std::string& role) const;
+
+  // Filter models by location
+  std::vector<const ModelMetadata*> FilterByLocation(
+      const std::string& location) const;
+
+  // Filter models by backend
+  std::vector<const ModelMetadata*> FilterByBackend(
+      const std::string& backend) const;
+
+  // Get registry path
+  const std::filesystem::path& GetPath() const { return registry_path_; }
+
+  // Check if registry exists
+  bool Exists() const;
+
+  // Get last load time
+  const std::string& GetLastLoadTime() const { return last_load_time_; }
+
+  // Get last error
+  const std::string& GetLastError() const { return last_error_; }
+
+ private:
+  std::filesystem::path ResolveDefaultPath() const;
+  bool ParseModel(const nlohmann::json& json, ModelMetadata* model) const;
+
+  std::filesystem::path registry_path_;
+  std::vector<ModelMetadata> models_;
+  std::string last_load_time_;
+  std::string last_error_;
+};
+
+}  // namespace studio
+}  // namespace afs

apps/studio/src/core/training_monitor.cc

@@ -0,0 +1,264 @@
+#include "training_monitor.h"
+
+#include <algorithm>
+#include <cstdlib>
+#include <fstream>
+#include <filesystem>
+#include "filesystem.h"
+#include "logger.h"
+
+namespace afs {
+namespace studio {
+
+TrainingMonitor::TrainingMonitor() {
+  // Default Windows mount for medical-mechanica D:
+  const char* home = std::getenv("HOME");
+  if (home) {
+    config_.windows_mount_path =
+        std::filesystem::path(home) / "Mounts" / "mm-d" / "afs_training";
+  }
+}
+
+TrainingMonitor::TrainingMonitor(const TrainingMonitorConfig& config)
+    : config_(config) {}
+
+std::filesystem::path TrainingMonitor::ResolveWindowsMount() const {
+  // Check if mount is accessible
+  if (core::FileSystem::Exists(config_.windows_mount_path)) {
+    std::error_code ec;
+    if (std::filesystem::is_directory(config_.windows_mount_path, ec)) {
+        return config_.windows_mount_path;
+    }
+  }
+  return {};
+}
+
+std::filesystem::path TrainingMonitor::FindLatestCheckpoint(
+    const std::filesystem::path& model_dir) {
+  std::filesystem::path latest;
+  std::filesystem::file_time_type latest_time;
+
+  try {
+    std::error_code ec;
+    auto it = std::filesystem::directory_iterator(model_dir, ec);
+    if (!ec) {
+      for (const auto& entry : it) {
+        std::error_code entry_ec;
+        if (entry.is_directory(entry_ec)) {
+          std::string name = entry.path().filename().string();
+          // Look for checkpoint-* directories
+          if (name.find("checkpoint-") == 0) {
+            auto time = entry.last_write_time(entry_ec);
+            if (!entry_ec && (latest.empty() || time > latest_time)) {
+              latest = entry.path();
+              latest_time = time;
+            }
+          }
+        }
+      }
+    }
+  } catch (...) {
+    // Directory iteration failed
+  }
+
+  return latest;
+}
+
+bool TrainingMonitor::Poll(std::string* error) {
+  last_error_.clear();
+  last_poll_time_ = std::chrono::steady_clock::now();
+
+  // Try mount first
+  std::filesystem::path mount = ResolveWindowsMount();
+  if (!mount.empty()) {
+    // Look for active training dirs
+    std::filesystem::path models_dir = mount / "models";
+    if (core::FileSystem::Exists(models_dir)) {
+      // Find the most recently modified model directory
+      std::filesystem::path latest_model;
+      std::filesystem::file_time_type latest_time;
+
+      try {
+        std::error_code ec;
+        auto it = std::filesystem::directory_iterator(models_dir, ec);
+        if (!ec) {
+          for (const auto& entry : it) {
+            std::error_code entry_ec;
+            if (entry.is_directory(entry_ec)) {
+              auto time = entry.last_write_time(entry_ec);
+              if (!entry_ec && (latest_model.empty() || time > latest_time)) {
+                latest_model = entry.path();
+                latest_time = time;
+              }
+            }
+          }
+        }
+      } catch (...) {
+        // Directory iteration failed
+      }
+
+      if (!latest_model.empty()) {
+        // Look for trainer_state.json in latest checkpoint
+        std::filesystem::path checkpoint = FindLatestCheckpoint(latest_model);
+        if (!checkpoint.empty()) {
+          std::filesystem::path state_file = checkpoint / "trainer_state.json";
+          if (core::FileSystem::Exists(state_file)) {
+            return LoadFromPath(state_file, error);
+          }
+        }
+
+        // Try trainer_state.json in model root
+        std::filesystem::path root_state = latest_model / "trainer_state.json";
+        if (core::FileSystem::Exists(root_state)) {
+          return LoadFromPath(root_state, error);
+        }
+      }
+    }
+
+    last_error_ = "No active training found in mount";
+    if (error) *error = last_error_;
+    state_.status = TrainingStatus::kIdle;
+    return true;  // Not an error, just no active training
+  }
+
+  last_error_ = "Windows mount not accessible: " + config_.windows_mount_path.string();
+  if (error) *error = last_error_;
+  return false;
+}
+
+bool TrainingMonitor::LoadFromPath(const std::filesystem::path& path,
+                                    std::string* error) {
+  std::ifstream file(path);
+  if (!file.is_open()) {
+    last_error_ = "Failed to open: " + path.string();
+    if (error) *error = last_error_;
+    return false;
+  }
+
+  try {
+    nlohmann::json json = nlohmann::json::parse(file);
+    if (!ParseTrainerState(json)) {
+      last_error_ = "Failed to parse trainer state";
+      if (error) *error = last_error_;
+      return false;
+    }
+
+    state_.source_path = path.string();
+    state_.source_location = "windows";
+    state_.is_remote = true;
+    return true;
+
+  } catch (const nlohmann::json::exception& e) {
+    last_error_ = std::string("JSON parse error: ") + e.what();
+    if (error) *error = last_error_;
+    return false;
+  }
+}
+
+bool TrainingMonitor::ParseTrainerState(const nlohmann::json& json) {
+  // Reset state
+  state_ = TrainingState{};
+
+  // Helper to safely get values
+  auto get_int = [&](const char* key) -> int {
+    if (json.contains(key) && json[key].is_number()) {
+      return json[key].get<int>();
+    }
+    return 0;
+  };
+
+  auto get_float = [&](const char* key) -> float {
+    if (json.contains(key) && json[key].is_number()) {
+      return json[key].get<float>();
+    }
+    return 0.0f;
+  };
+
+  auto get_string = [&](const char* key) -> std::string {
+    if (json.contains(key) && json[key].is_string()) {
+      return json[key].get<std::string>();
+    }
+    return "";
+  };
+
+  // Parse basic info
+  state_.current_epoch = get_int("epoch");
+  state_.total_epochs = get_int("num_train_epochs");
+  state_.current_step = get_int("global_step");
+  state_.total_steps = get_int("max_steps");
+
+  // Calculate progress
+  if (state_.total_steps > 0) {
+    state_.progress_percent =
+        static_cast<float>(state_.current_step) / state_.total_steps * 100.0f;
+  }
+
+  // Determine status
+  if (state_.current_step > 0 && state_.current_step < state_.total_steps) {
+    state_.status = TrainingStatus::kRunning;
+  } else if (state_.current_step >= state_.total_steps && state_.total_steps > 0) {
+    state_.status = TrainingStatus::kCompleted;
+  } else {
+    state_.status = TrainingStatus::kIdle;
+  }
+
+  // Parse loss history
+  if (json.contains("log_history") && json["log_history"].is_array()) {
+    for (const auto& entry : json["log_history"]) {
+      if (entry.contains("loss") && entry["loss"].is_number()) {
+        LossPoint point;
+        if (entry.contains("step") && entry["step"].is_number()) {
+          point.step = entry["step"].get<int>();
+        }
+        point.loss = entry["loss"].get<float>();
+        if (entry.contains("eval_loss") && entry["eval_loss"].is_number()) {
+          point.eval_loss = entry["eval_loss"].get<float>();
+        }
+        state_.loss_history.push_back(point);
+
+        // Track current and best loss
+        state_.current_loss = point.loss;
+        if (state_.best_loss == 0.0f || point.loss < state_.best_loss) {
+          state_.best_loss = point.loss;
+          state_.best_step = point.step;
+        }
+      }
+    }
+  }
+
+  // Parse timing info
+  if (json.contains("total_flos") && json["total_flos"].is_number()) {
+    // Estimate based on FLOPS if available
+  }
+
+  // Extract model name from path if available
+  if (json.contains("best_model_checkpoint") &&
+      json["best_model_checkpoint"].is_string()) {
+    std::string path = json["best_model_checkpoint"].get<std::string>();
+    // Extract model name from path
+    size_t pos = path.rfind('/');
+    if (pos == std::string::npos) pos = path.rfind('\\');
+    if (pos != std::string::npos && pos > 0) {
+      size_t start = path.rfind('/', pos - 1);
+      if (start == std::string::npos) start = path.rfind('\\', pos - 1);
+      if (start != std::string::npos) {
+        state_.model_name = path.substr(start + 1, pos - start - 1);
+      }
+    }
+  }
+
+  return true;
+}
+
+bool TrainingMonitor::ShouldRefresh() const {
+  if (!config_.auto_refresh) return false;
+
+  auto now = std::chrono::steady_clock::now();
+  auto elapsed = std::chrono::duration_cast<std::chrono::seconds>(
+      now - last_poll_time_);
+
+  return elapsed.count() >= config_.refresh_interval_seconds;
+}
+
+}  // namespace studio
+}  // namespace afs

apps/studio/src/core/training_monitor.h

@@ -0,0 +1,148 @@
+#pragma once
+
+#include <nlohmann/json.hpp>
+
+#include <chrono>
+#include <deque>
+#include <filesystem>
+#include <map>
+#include <optional>
+#include <string>
+#include <vector>
+
+namespace afs {
+namespace studio {
+
+// Training run status
+enum class TrainingStatus {
+  kUnknown,
+  kIdle,
+  kRunning,
+  kCompleted,
+  kFailed,
+  kPaused
+};
+
+// Single epoch progress data
+struct EpochProgress {
+  int epoch = 0;
+  int step = 0;
+  int total_steps = 0;
+  float loss = 0.0f;
+  float learning_rate = 0.0f;
+  std::string timestamp;
+};
+
+// Loss data point for charts
+struct LossPoint {
+  int step = 0;
+  float loss = 0.0f;
+  float eval_loss = 0.0f;
+};
+
+// Training state from trainer_state.json
+struct TrainingState {
+  // Identity
+  std::string run_name;
+  std::string model_name;
+  std::string base_model;
+
+  // Progress
+  TrainingStatus status = TrainingStatus::kUnknown;
+  int current_epoch = 0;
+  int total_epochs = 0;
+  int current_step = 0;
+  int total_steps = 0;
+  float progress_percent = 0.0f;
+
+  // Timing
+  std::string started_at;
+  std::string updated_at;
+  int elapsed_minutes = 0;
+  int estimated_remaining_minutes = 0;
+
+  // Metrics
+  float current_loss = 0.0f;
+  float best_loss = 0.0f;
+  int best_step = 0;
+  std::optional<float> eval_loss;
+  std::optional<float> perplexity;
+
+  // Loss history for plotting
+  std::vector<LossPoint> loss_history;
+
+  // Hardware
+  std::string device;
+  std::optional<float> gpu_memory_percent;
+  std::optional<float> gpu_utilization_percent;
+
+  // Source
+  std::string source_path;
+  std::string source_location;  // "windows", "mac", "cloud"
+  bool is_remote = false;
+};
+
+// Configuration for training monitor
+struct TrainingMonitorConfig {
+  // Windows mount point
+  std::filesystem::path windows_mount_path;
+  std::string windows_training_dir = "D:/afs_training";
+
+  // SSH config (fallback if mount not available)
+  std::string ssh_host = "medical-mechanica";
+  std::string ssh_user = "Administrator";
+
+  // Auto-refresh
+  bool auto_refresh = true;
+  int refresh_interval_seconds = 10;
+
+  // What to monitor
+  std::vector<std::string> watched_paths;
+};
+
+// Training monitor - reads training state from local or remote
+class TrainingMonitor {
+ public:
+  TrainingMonitor();
+  explicit TrainingMonitor(const TrainingMonitorConfig& config);
+
+  // Poll for current training state
+  bool Poll(std::string* error = nullptr);
+
+  // Get current training state
+  const TrainingState& GetState() const { return state_; }
+
+  // Check if any training is active
+  bool IsTrainingActive() const {
+    return state_.status == TrainingStatus::kRunning;
+  }
+
+  // Get last poll time
+  const std::chrono::steady_clock::time_point& GetLastPollTime() const {
+    return last_poll_time_;
+  }
+
+  // Check if refresh is needed based on interval
+  bool ShouldRefresh() const;
+
+  // Configuration
+  const TrainingMonitorConfig& GetConfig() const { return config_; }
+  void SetConfig(const TrainingMonitorConfig& config) { config_ = config; }
+
+  // Error handling
+  const std::string& GetLastError() const { return last_error_; }
+
+ private:
+  bool LoadFromPath(const std::filesystem::path& path, std::string* error);
+  bool ParseTrainerState(const nlohmann::json& json);
+  std::filesystem::path FindLatestCheckpoint(const std::filesystem::path& model_dir);
+  std::filesystem::path ResolveWindowsMount() const;
+
+  TrainingMonitorConfig config_;
+  TrainingState state_;
+  std::chrono::steady_clock::time_point last_poll_time_;
+  std::string last_error_;
+};
+
+}  // namespace studio
+}  // namespace afs

apps/studio/src/data_loader.cc

@@ -0,0 +1,614 @@
+#include "data_loader.h"
+#include "core/logger.h"
+#include "core/filesystem.h"
+
+#include <algorithm>
+#include <cmath>
+#include <cctype>
+#include <cstdlib>
+#include <fstream>
+#include <sstream>
+#include <utility>
+#include <optional>
+#include <nlohmann/json.hpp>
+
+namespace afs {
+namespace viz {
+
+namespace {
+
+using json = nlohmann::json;
+
+constexpr size_t kTrendWindow = 5;
+
+std::optional<std::filesystem::path> ResolveHafsScawfulRoot() {
+  const char* env_root = std::getenv("AFS_SCAWFUL_ROOT");
+  if (env_root && env_root[0] != '\0') {
+    auto path = studio::core::FileSystem::ResolvePath(env_root);
+    if (studio::core::FileSystem::Exists(path)) {
+      return path;
+    }
+  }
+
+  auto plugin_path = studio::core::FileSystem::ResolvePath("~/.config/afs/plugins/afs_scawful");
+  if (studio::core::FileSystem::Exists(plugin_path)) {
+    return plugin_path;
+  }
+
+  auto legacy_path = studio::core::FileSystem::ResolvePath("~/src/trunk/scawful/research/afs_scawful");
+  if (studio::core::FileSystem::Exists(legacy_path)) {
+    return legacy_path;
+  }
+
+  return std::nullopt;
+}
+
+constexpr float kTrendDeltaThreshold = 0.05f;
+
+bool IsWhitespaceOnly(const std::string& s) {
+  return std::all_of(s.begin(), s.end(), [](unsigned char c) {
+    return std::isspace(c);
+  });
+}
+
+} // namespace
+
+DataLoader::DataLoader(const std::string& data_path,
+                       FileReader file_reader,
+                       PathExists path_exists)
+    : data_path_(data_path) {
+    
+    // Set default handlers if not provided
+    if (file_reader) {
+        file_reader_ = std::move(file_reader);
+    } else {
+        file_reader_ = [](const std::string& p, std::string* c, std::string* e) {
+            auto content = studio::core::FileSystem::ReadFile(p);
+            if (content) {
+                *c = *content;
+                return true;
+            }
+            if (e) *e = "Failed to read file";
+            return false;
+        };
+    }
+
+    if (path_exists) {
+        path_exists_ = std::move(path_exists);
+    } else {
+        path_exists_ = [](const std::string& p) {
+            try {
+                return studio::core::FileSystem::Exists(p);
+            } catch (...) {
+                return false;
+            }
+        };
+    }
+}
+
+bool DataLoader::Refresh() {
+  last_error_.clear();
+  last_status_ = LoadStatus{};
+
+  if (!path_exists_(data_path_)) {
+    last_error_ = "Data path does not exist: " + data_path_;
+    LOG_ERROR(last_error_);
+    last_status_.error_count = 1;
+    last_status_.last_error = last_error_;
+    last_status_.last_error_source = "data_path";
+    return false;
+  }
+  LOG_INFO("DataLoader: Refreshing from " + data_path_);
+
+  auto next_quality_trends = quality_trends_;
+  auto next_generator_stats = generator_stats_;
+  auto next_rejection_summary = rejection_summary_;
+  auto next_embedding_regions = embedding_regions_;
+  auto next_coverage = coverage_;
+  auto next_training_runs = training_runs_;
+  auto next_optimization_data = optimization_data_;
+  auto next_curated_hacks = curated_hacks_;
+  auto next_resource_index = resource_index_;
+
+  LoadResult quality = LoadQualityFeedback(&next_quality_trends,
+                                           &next_generator_stats,
+                                           &next_rejection_summary);
+  last_status_.quality_found = quality.found;
+  last_status_.quality_ok = quality.ok;
+  if (quality.found && !quality.ok) {
+    last_status_.error_count += 1;
+    if (last_status_.last_error.empty()) {
+      last_status_.last_error = quality.error;
+      last_status_.last_error_source = "quality_feedback.json";
+    }
+  }
+  if (quality.ok) {
+    quality_trends_ = std::move(next_quality_trends);
+    generator_stats_ = std::move(next_generator_stats);
+    rejection_summary_ = std::move(next_rejection_summary);
+    
+    // Initialize domain visibility for new domains
+    for (const auto& trend : quality_trends_) {
+        if (domain_visibility_.find(trend.domain) == domain_visibility_.end()) {
+            domain_visibility_[trend.domain] = true;
+        }
+    }
+  }
+
+  LoadResult active = LoadActiveLearning(&next_embedding_regions, &next_coverage);
+  last_status_.active_found = active.found;
+  last_status_.active_ok = active.ok;
+  if (active.found && !active.ok) {
+    last_status_.error_count += 1;
+    if (last_status_.last_error.empty()) {
+      last_status_.last_error = active.error;
+      last_status_.last_error_source = "active_learning.json";
+    }
+  }
+  if (active.ok) {
+    embedding_regions_ = std::move(next_embedding_regions);
+    coverage_ = std::move(next_coverage);
+  }
+
+  LoadResult training = LoadTrainingFeedback(&next_training_runs,
+                                             &next_optimization_data);
+  last_status_.training_found = training.found;
+  last_status_.training_ok = training.ok;
+  if (training.found && !training.ok) {
+    last_status_.error_count += 1;
+    if (last_status_.last_error.empty()) {
+      last_status_.last_error = training.error;
+      last_status_.last_error_source = "training_feedback.json";
+    }
+  }
+  if (training.ok) {
+    training_runs_ = std::move(next_training_runs);
+    optimization_data_ = std::move(next_optimization_data);
+  }
+
+  LoadResult curated = LoadCuratedHacks(&next_curated_hacks);
+  if (!curated.found) {
+    curated_hacks_.clear();
+    curated_hacks_error_ = "curated_hacks.json not found";
+  } else if (!curated.ok) {
+    curated_hacks_error_ = curated.error;
+  } else {
+    curated_hacks_ = std::move(next_curated_hacks);
+    curated_hacks_error_.clear();
+  }
+
+  LoadResult resource = LoadResourceIndex(&next_resource_index);
+  if (!resource.found) {
+    resource_index_ = ResourceIndexData{};
+    resource_index_error_ = "resource_index.json not found";
+  } else if (!resource.ok) {
+    resource_index_error_ = resource.error;
+  } else {
+    resource_index_ = std::move(next_resource_index);
+    resource_index_error_.clear();
+  }
+  
+  // Update Mounts status
+  mounts_.clear();
+  const char* home = std::getenv("HOME");
+  std::string home_str = home ? home : "";
+  
+  auto add_mount = [&](const std::string& name, std::string path) {
+      if (path.size() >= 2 && path[0] == '~' && path[1] == '/') {
+          path = home_str + path.substr(1);
+      }
+      mounts_.push_back({name, path, path_exists_(path)});
+  };
+
+  add_mount("Code", "~/Code");
+  auto scawful_root = ResolveHafsScawfulRoot();
+  if (scawful_root) {
+    add_mount("afs_scawful", scawful_root->string());
+  }
+  add_mount("usdasm", "~/Code/usdasm");
+  add_mount("Medical Mechanica (D)", "/Users/scawful/Mounts/mm-d/afs_training");
+  add_mount("Oracle-of-Secrets", "~/Code/Oracle-of-Secrets");
+  add_mount("yaze", "~/Code/yaze");
+  add_mount("System Context", "~/.context");
+
+  has_data_ = !quality_trends_.empty() || !generator_stats_.empty() ||
+              !embedding_regions_.empty() || !training_runs_.empty() ||
+              !optimization_data_.domain_effectiveness.empty() ||
+              !optimization_data_.threshold_sensitivity.empty();
+  last_error_ = last_status_.last_error;
+
+  return last_status_.AnyOk() || (!(last_status_.FoundCount() > 0) && has_data_);
+}
+
+DataLoader::LoadResult DataLoader::LoadQualityFeedback(
+    std::vector<QualityTrendData>* quality_trends,
+    std::vector<GeneratorStatsData>* generator_stats,
+    RejectionSummary* rejection_summary) {
+  
+  LoadResult result;
+  std::string path = data_path_ + "/quality_feedback.json";
+  if (!path_exists_(path)) {
+      LOG_WARN("quality_feedback.json not found at " + path);
+      return result;
+  }
+  LOG_INFO("DataLoader: Loading " + path);
+
+  result.found = true;
+  std::string content;
+  std::string read_error;
+  if (!file_reader_(path, &content, &read_error) || content.empty() || IsWhitespaceOnly(content)) {
+    result.ok = false;
+    result.error = read_error.empty() ? "quality_feedback.json is empty" : read_error;
+    return result;
+  }
+
+  try {
+    json data = json::parse(content);
+    std::vector<QualityTrendData> next_quality_trends;
+    std::vector<GeneratorStatsData> next_generator_stats;
+    RejectionSummary next_rejection_summary;
+
+    if (data.contains("generator_stats") && data["generator_stats"].is_object()) {
+      bool only_one = data["generator_stats"].size() == 1;
+      for (auto& [name, stats] : data["generator_stats"].items()) {
+        GeneratorStatsData gs;
+        std::string processed_name = name;
+        if (processed_name == "unknown" && only_one) {
+            processed_name = "Core Engine";
+        }
+        
+        // Strip common suffixes for cleaner display
+        size_t pos = processed_name.find("DataGenerator");
+        if (pos != std::string::npos) {
+            processed_name = processed_name.substr(0, pos);
+        }
+        
+        gs.name = processed_name;
+        gs.samples_generated = stats.value("samples_generated", 0);
+        gs.samples_accepted = stats.value("samples_accepted", 0);
+        gs.samples_rejected = stats.value("samples_rejected", 0);
+        gs.avg_quality = stats.value("avg_quality_score", 0.0f);
+
+        int total = gs.samples_accepted + gs.samples_rejected;
+        gs.acceptance_rate = total > 0 ? static_cast<float>(gs.samples_accepted) / total : 0.0f;
+
+        if (stats.contains("rejection_reasons") && stats["rejection_reasons"].is_object()) {
+          for (auto& [reason, count] : stats["rejection_reasons"].items()) {
+            int c = count.get<int>();
+            gs.rejection_reasons[reason] = c;
+            next_rejection_summary.reasons[reason] += c;
+            next_rejection_summary.total_rejections += c;
+          }
+        }
+        next_generator_stats.push_back(std::move(gs));
+      }
+    }
+
+    if (data.contains("rejection_history") && data["rejection_history"].is_array()) {
+      std::map<std::pair<std::string, std::string>, QualityTrendData> trends_map;
+      for (auto& entry : data["rejection_history"]) {
+        std::string domain = entry.value("domain", "unknown");
+        if (entry.contains("scores") && entry["scores"].is_object()) {
+          for (auto& [metric, value] : entry["scores"].items()) {
+            auto key = std::make_pair(domain, metric);
+            if (trends_map.find(key) == trends_map.end()) {
+              trends_map[key] = QualityTrendData{domain, metric};
+            }
+            trends_map[key].values.push_back(value.get<float>());
+          }
+        }
+      }
+
+      for (auto& [key, trend] : trends_map) {
+        if (!trend.values.empty()) {
+          float sum = 0.0f;
+          for (float v : trend.values) sum += v;
+          trend.mean = sum / trend.values.size();
+
+          if (trend.values.size() < kTrendWindow) {
+            trend.trend_direction = "insufficient";
+          } else {
+            float recent = 0.0f, older = 0.0f;
+            for (size_t i = trend.values.size() - kTrendWindow; i < trend.values.size(); ++i) recent += trend.values[i];
+            for (size_t i = 0; i < kTrendWindow && i < trend.values.size(); ++i) older += trend.values[i];
+            recent /= kTrendWindow;
+            older /= std::min((size_t)kTrendWindow, trend.values.size());
+            float diff = recent - older;
+            if (diff > kTrendDeltaThreshold) trend.trend_direction = "improving";
+            else if (diff < -kTrendDeltaThreshold) trend.trend_direction = "declining";
+            else trend.trend_direction = "stable";
+          }
+        }
+        next_quality_trends.push_back(std::move(trend));
+      }
+    }
+
+    if (quality_trends) *quality_trends = std::move(next_quality_trends);
+    if (generator_stats) *generator_stats = std::move(next_generator_stats);
+    if (rejection_summary) *rejection_summary = std::move(next_rejection_summary);
+
+    LOG_INFO("DataLoader: Successfully loaded data");
+    result.ok = true;
+
+  } catch (const json::exception& e) {
+    result.ok = false;
+    result.error = std::string("JSON error in quality_feedback.json: ") + e.what();
+    LOG_ERROR(result.error);
+  }
+
+  return result;
+}
+
+DataLoader::LoadResult DataLoader::LoadActiveLearning(
+    std::vector<EmbeddingRegionData>* embedding_regions,
+    CoverageData* coverage) {
+  
+  LoadResult result;
+  std::string path = data_path_ + "/active_learning.json";
+  if (!path_exists_(path)) return result;
+
+  LOG_INFO("DataLoader: Loading " + path);
+  result.found = true;
+  std::string content;
+  std::string read_error;
+  if (!file_reader_(path, &content, &read_error) || content.empty() || IsWhitespaceOnly(content)) {
+    result.ok = false;
+    result.error = read_error.empty() ? "active_learning.json is empty" : read_error;
+    return result;
+  }
+
+  try {
+    json data = json::parse(content);
+    std::vector<EmbeddingRegionData> next_embedding_regions;
+    CoverageData next_coverage;
+
+    if (data.contains("regions") && data["regions"].is_array()) {
+      int idx = 0;
+      for (auto& region : data["regions"]) {
+        EmbeddingRegionData erd;
+        erd.index = idx++;
+        erd.sample_count = region.value("sample_count", 0);
+        erd.domain = region.value("domain", "unknown");
+        erd.avg_quality = region.value("avg_quality", 0.0f);
+        next_embedding_regions.push_back(std::move(erd));
+      }
+    }
+
+    next_coverage.num_regions = data.value("num_regions", 0);
+    
+    if (embedding_regions) *embedding_regions = std::move(next_embedding_regions);
+    if (coverage) *coverage = std::move(next_coverage);
+
+    LOG_INFO("DataLoader: Successfully loaded active learning data");
+    result.ok = true;
+
+  } catch (const json::exception& e) {
+    result.ok = false;
+    result.error = std::string("JSON error in active_learning.json: ") + e.what();
+    LOG_ERROR(result.error);
+  }
+
+  return result;
+}
+
+DataLoader::LoadResult DataLoader::LoadTrainingFeedback(
+    std::vector<TrainingRunData>* training_runs,
+    OptimizationData* optimization_data) {
+  
+  LoadResult result;
+  std::string path = data_path_ + "/training_feedback.json";
+  if (!path_exists_(path)) return result;
+
+  LOG_INFO("DataLoader: Loading " + path);
+  result.found = true;
+  std::string content;
+  std::string read_error;
+  if (!file_reader_(path, &content, &read_error) || content.empty() || IsWhitespaceOnly(content)) {
+    result.ok = false;
+    result.error = read_error.empty() ? "training_feedback.json is empty" : read_error;
+    return result;
+  }
+
+  try {
+    json data = json::parse(content);
+    std::vector<TrainingRunData> next_training_runs;
+    OptimizationData next_optimization_data;
+
+    if (data.contains("training_runs") && data["training_runs"].is_object()) {
+      for (auto& [id, run] : data["training_runs"].items()) {
+        TrainingRunData trd;
+        trd.run_id = id;
+        trd.model_name = run.value("model_name", "unknown");
+        trd.samples_count = run.value("samples_count", 0);
+        trd.final_loss = run.value("final_loss", 0.0f);
+        trd.start_time = run.value("start_time", "");
+        
+        if (run.contains("domain_distribution") && run["domain_distribution"].is_object()) {
+           for (auto& [domain, count] : run["domain_distribution"].items()) {
+             trd.domain_distribution[domain] = count.get<int>();
+           }
+        }
+        next_training_runs.push_back(std::move(trd));
+      }
+    }
+
+    if (data.contains("domain_effectiveness") && data["domain_effectiveness"].is_object()) {
+      for (auto& [domain, val] : data["domain_effectiveness"].items()) {
+        next_optimization_data.domain_effectiveness[domain] = val.get<float>();
+      }
+    }
+
+    if (data.contains("quality_threshold_effectiveness") && data["quality_threshold_effectiveness"].is_object()) {
+      for (auto& [thresh, val] : data["quality_threshold_effectiveness"].items()) {
+        next_optimization_data.threshold_sensitivity[thresh] = val.get<float>();
+      }
+    }
+
+    if (training_runs) *training_runs = std::move(next_training_runs);
+    if (optimization_data) *optimization_data = std::move(next_optimization_data);
+
+    LOG_INFO("DataLoader: Successfully loaded training feedback data");
+    result.ok = true;
+
+  } catch (const json::exception& e) {
+    result.ok = false;
+    result.error = std::string("JSON error in training_feedback.json: ") + e.what();
+    LOG_ERROR(result.error);
+  }
+
+  return result;
+}
+
+DataLoader::LoadResult DataLoader::LoadCuratedHacks(
+    std::vector<CuratedHackEntry>* curated_hacks) {
+  LoadResult result;
+  std::string path = data_path_ + "/curated_hacks.json";
+  if (!path_exists_(path)) {
+    LOG_WARN("curated_hacks.json not found at " + path);
+    return result;
+  }
+  LOG_INFO("DataLoader: Loading " + path);
+
+  result.found = true;
+  std::string content;
+  std::string read_error;
+  if (!file_reader_(path, &content, &read_error) || content.empty() ||
+      IsWhitespaceOnly(content)) {
+    result.ok = false;
+    result.error =
+        read_error.empty() ? "curated_hacks.json is empty" : read_error;
+    return result;
+  }
+
+  try {
+    json data = json::parse(content);
+    if (!data.contains("hacks") || !data["hacks"].is_array()) {
+      result.ok = false;
+      result.error = "curated_hacks.json missing 'hacks' array";
+      return result;
+    }
+
+    curated_hacks->clear();
+    for (const auto& hack : data["hacks"]) {
+      CuratedHackEntry entry;
+      entry.name = hack.value("name", "");
+      entry.path = hack.value("path", "");
+      entry.notes = hack.value("notes", "");
+      entry.review_status = hack.value("review_status", "");
+      entry.weight = hack.value("weight", 1.0f);
+      entry.eligible_files = hack.value("eligible_files", 0);
+      entry.selected_files = hack.value("selected_files", 0);
+      entry.org_ratio = hack.value("org_ratio", 0.0f);
+      entry.address_ratio = hack.value("address_ratio", 0.0f);
+      entry.avg_comment_ratio = hack.value("avg_comment_ratio", 0.0f);
+      entry.status = hack.value("status", "");
+      entry.error = hack.value("error", "");
+
+      auto read_string_array = [](const json& arr) {
+        std::vector<std::string> out;
+        if (!arr.is_array()) return out;
+        for (const auto& value : arr) {
+          if (value.is_string()) out.push_back(value.get<std::string>());
+        }
+        return out;
+      };
+
+      if (hack.contains("authors")) entry.authors = read_string_array(hack["authors"]);
+      if (hack.contains("include_globs")) entry.include_globs = read_string_array(hack["include_globs"]);
+      if (hack.contains("exclude_globs")) entry.exclude_globs = read_string_array(hack["exclude_globs"]);
+      if (hack.contains("sample_files")) entry.sample_files = read_string_array(hack["sample_files"]);
+
+      curated_hacks->push_back(std::move(entry));
+    }
+
+    result.ok = true;
+  } catch (const std::exception& e) {
+    result.ok = false;
+    result.error = std::string("Failed to parse curated_hacks.json: ") + e.what();
+  }
+
+  return result;
+}
+
+DataLoader::LoadResult DataLoader::LoadResourceIndex(ResourceIndexData* resource_index) {
+  LoadResult result;
+  std::string path = data_path_ + "/resource_index.json";
+  if (!path_exists_(path)) {
+    LOG_WARN("resource_index.json not found at " + path);
+    return result;
+  }
+  LOG_INFO("DataLoader: Loading " + path);
+
+  result.found = true;
+  std::string content;
+  std::string read_error;
+  if (!file_reader_(path, &content, &read_error) || content.empty() ||
+      IsWhitespaceOnly(content)) {
+    result.ok = false;
+    result.error = read_error.empty() ? "resource_index.json is empty" : read_error;
+    return result;
+  }
+
+  try {
+    json data = json::parse(content);
+    if (!data.contains("metadata")) {
+      result.ok = false;
+      result.error = "resource_index.json missing metadata";
+      return result;
+    }
+
+    const auto& meta = data["metadata"];
+    resource_index->total_files = meta.value("total_files", 0);
+    resource_index->duplicates_found = meta.value("duplicates_found", 0);
+    resource_index->duration_seconds = meta.value("duration_seconds", 0.0f);
+    resource_index->indexed_at = meta.value("indexed_at", "");
+    resource_index->by_source.clear();
+    resource_index->by_type.clear();
+
+    if (meta.contains("by_source")) {
+      for (auto it = meta["by_source"].begin(); it != meta["by_source"].end(); ++it) {
+        resource_index->by_source[it.key()] = it.value().get<int>();
+      }
+    }
+    if (meta.contains("by_type")) {
+      for (auto it = meta["by_type"].begin(); it != meta["by_type"].end(); ++it) {
+        resource_index->by_type[it.key()] = it.value().get<int>();
+      }
+    }
+
+    result.ok = true;
+  } catch (const std::exception& e) {
+    result.ok = false;
+    result.error = std::string("Failed to parse resource_index.json: ") + e.what();
+  }
+
+  return result;
+}
+
+void DataLoader::MountDrive(const std::string& name) {
+  auto scawful_root = ResolveHafsScawfulRoot();
+  std::filesystem::path script_path = scawful_root 
+      ? *scawful_root / "scripts" / "mount_windows.sh"
+      : studio::core::FileSystem::ResolvePath("~/src/trunk/scawful/research/afs_scawful/scripts/mount_windows.sh");
+
+  if (studio::core::FileSystem::Exists(script_path)) {
+    LOG_INFO("DataLoader: Triggering mount using " + script_path.string());
+    // The script takes an optional argument, but 'mount' is default.
+    std::string cmd = "bash \"" + script_path.string() + "\" mount 2>&1";
+    FILE* pipe = popen(cmd.c_str(), "r");
+    if (pipe) {
+      char buffer[256];
+      while (fgets(buffer, sizeof(buffer), pipe)) {
+          std::string line(buffer);
+          if (!line.empty() && line.back() == '\n') line.pop_back();
+          LOG_INFO("Mount output: " + line);
+      }
+      pclose(pipe);
+    }
+  } else {
+    LOG_ERROR("DataLoader: Mount script not found: " + script_path.string());
+  }
+}
+
+} // namespace viz
+} // namespace afs

apps/studio/src/data_loader.h

@@ -0,0 +1,231 @@
+#pragma once
+
+#include <functional>
+#include <map>
+#include <string>
+#include <vector>
+
+namespace afs {
+namespace viz {
+
+/// Quality trend for a single domain/metric.
+struct QualityTrendData {
+  std::string domain;
+  std::string metric;
+  std::vector<float> values;
+  float mean = 0.0f;
+  std::string trend_direction;  // "improving", "declining", "stable", "insufficient"
+};
+
+/// Statistics for a single generator.
+struct GeneratorStatsData {
+  std::string name;
+  int samples_generated = 0;
+  int samples_accepted = 0;
+  int samples_rejected = 0;
+  std::map<std::string, int> rejection_reasons;
+  float acceptance_rate = 0.0f;
+  float avg_quality = 0.0f;
+};
+
+/// Embedding space region data.
+struct EmbeddingRegionData {
+  int index = 0;
+  int sample_count = 0;
+  std::string domain;
+  float avg_quality = 0.0f;
+};
+
+/// Training run metadata.
+struct TrainingRunData {
+  std::string run_id;
+  std::string model_name;
+  std::string base_model;
+  std::string dataset_path;
+  std::string start_time;
+  std::string end_time;
+  std::string notes;
+  float final_loss = 0.0f;
+  int samples_count = 0;
+  std::map<std::string, int> domain_distribution;
+  std::map<std::string, float> eval_metrics;
+};
+
+/// Embedding coverage summary.
+struct CoverageData {
+  int total_samples = 0;
+  int num_regions = 0;
+  float coverage_score = 0.0f;
+  int sparse_regions = 0;
+  std::map<std::string, float> domain_coverage;
+};
+
+/// Aggregated rejection reasons across all generators.
+struct RejectionSummary {
+  std::map<std::string, int> reasons;
+  int total_rejections = 0;
+};
+
+/// Curated hack entry metadata.
+struct CuratedHackEntry {
+  std::string name;
+  std::string path;
+  std::vector<std::string> authors;
+  std::string notes;
+  std::string review_status;
+  float weight = 1.0f;
+  std::vector<std::string> include_globs;
+  std::vector<std::string> exclude_globs;
+  int eligible_files = 0;
+  int selected_files = 0;
+  float org_ratio = 0.0f;
+  float address_ratio = 0.0f;
+  float avg_comment_ratio = 0.0f;
+  std::vector<std::string> sample_files;
+  std::string status;
+  std::string error;
+};
+
+/// Resource index summary for data sources.
+struct ResourceIndexData {
+  int total_files = 0;
+  int duplicates_found = 0;
+  float duration_seconds = 0.0f;
+  std::string indexed_at;
+  std::map<std::string, int> by_source;
+  std::map<std::string, int> by_type;
+};
+
+/// Optimization metrics.
+struct OptimizationData {
+  std::map<std::string, float> domain_effectiveness;
+  std::map<std::string, float> threshold_sensitivity;
+};
+
+/// Local mount information for the system.
+struct MountData {
+  std::string name;
+  std::string path;
+  bool active = false;
+};
+
+/// Data load status for the last refresh cycle.
+struct LoadStatus {
+  bool quality_found = false;
+  bool quality_ok = false;
+  bool active_found = false;
+  bool active_ok = false;
+  bool training_found = false;
+  bool training_ok = false;
+  int error_count = 0;
+  std::string last_error;
+  std::string last_error_source;
+
+  int FoundCount() const {
+    return static_cast<int>(quality_found) + static_cast<int>(active_found) +
+           static_cast<int>(training_found);
+  }
+  int OkCount() const {
+    return static_cast<int>(quality_ok) + static_cast<int>(active_ok) +
+           static_cast<int>(training_ok);
+  }
+  bool AnyOk() const { return quality_ok || active_ok || training_ok; }
+};
+
+/// Loads training data from JSON files.
+class DataLoader {
+ public:
+  using FileReader = std::function<bool(const std::string&,
+                                        std::string*,
+                                        std::string*)>;
+  using PathExists = std::function<bool(const std::string&)>;
+
+  explicit DataLoader(const std::string& data_path,
+                      FileReader file_reader = {},
+                      PathExists path_exists = {});
+
+  /// Reload all data from disk. Returns true on success.
+  bool Refresh();
+
+  // Accessors
+  const std::vector<QualityTrendData>& GetQualityTrends() const {
+    return quality_trends_;
+  }
+  const std::vector<GeneratorStatsData>& GetGeneratorStats() const {
+    return generator_stats_;
+  }
+  const std::vector<EmbeddingRegionData>& GetEmbeddingRegions() const {
+    return embedding_regions_;
+  }
+  const std::vector<TrainingRunData>& GetTrainingRuns() const {
+    return training_runs_;
+  }
+  const CoverageData& GetCoverage() const { return coverage_; }
+  const RejectionSummary& GetRejectionSummary() const {
+    return rejection_summary_;
+  }
+  const OptimizationData& GetOptimizationData() const {
+    return optimization_data_;
+  }
+  const std::vector<CuratedHackEntry>& GetCuratedHacks() const {
+    return curated_hacks_;
+  }
+  const std::string& GetCuratedHacksError() const {
+    return curated_hacks_error_;
+  }
+  const ResourceIndexData& GetResourceIndex() const { return resource_index_; }
+  const std::string& GetResourceIndexError() const { return resource_index_error_; }
+  const std::vector<MountData>& GetMounts() const {
+    return mounts_;
+  }
+  const std::map<std::string, bool>& GetDomainVisibility() const { return domain_visibility_; }
+  const LoadStatus& GetLastStatus() const { return last_status_; }
+
+  bool HasData() const { return has_data_; }
+  std::string GetLastError() const { return last_error_; }
+
+  /// Trigger mounting of external drives.
+  void MountDrive(const std::string& name);
+
+ private:
+  struct LoadResult {
+    bool found = false;
+    bool ok = false;
+    std::string error;
+  };
+
+  LoadResult LoadQualityFeedback(std::vector<QualityTrendData>* quality_trends,
+                                 std::vector<GeneratorStatsData>* generator_stats,
+                                 RejectionSummary* rejection_summary);
+  LoadResult LoadActiveLearning(
+      std::vector<EmbeddingRegionData>* embedding_regions,
+      CoverageData* coverage);
+  LoadResult LoadTrainingFeedback(std::vector<TrainingRunData>* training_runs,
+                                  OptimizationData* optimization_data);
+  LoadResult LoadCuratedHacks(std::vector<CuratedHackEntry>* curated_hacks);
+  LoadResult LoadResourceIndex(ResourceIndexData* resource_index);
+
+  std::string data_path_;
+  FileReader file_reader_;
+  PathExists path_exists_;
+  bool has_data_ = false;
+  std::string last_error_;
+  LoadStatus last_status_;
+
+  std::vector<QualityTrendData> quality_trends_;
+  std::vector<GeneratorStatsData> generator_stats_;
+  std::vector<EmbeddingRegionData> embedding_regions_;
+  std::vector<TrainingRunData> training_runs_;
+  CoverageData coverage_;
+  RejectionSummary rejection_summary_;
+  OptimizationData optimization_data_;
+  std::vector<CuratedHackEntry> curated_hacks_;
+  std::string curated_hacks_error_;
+  ResourceIndexData resource_index_;
+  std::string resource_index_error_;
+  std::vector<MountData> mounts_;
+  std::map<std::string, bool> domain_visibility_;
+};
+
+}  // namespace viz
+}  // namespace afs

apps/studio/src/main.cc

@@ -0,0 +1,41 @@
+/// AFS Training Data Visualization - Main Entry Point
+///
+/// Usage: afs_viz [data_path]
+///   data_path: Path to training data directory (default: ~/.context/training)
+///
+/// Build:
+///   cmake -B build -S src/cc -DAFS_BUILD_VIZ=ON
+///   cmake --build build
+///
+/// Keys:
+///   F5 - Refresh data
+///   Ctrl+Q - Quit
+///   Ctrl+/ - Shortcut editor
+
+#include <iostream>
+#include <string>
+
+#include "app.h"
+#include "core/logger.h"
+#include "core/filesystem.h"
+
+int main(int argc, char* argv[]) {
+  using afs::studio::core::FileSystem;
+  
+  // Determine data path
+  std::string data_path_str;
+  if (argc > 1) {
+    data_path_str = argv[1];
+  } else {
+    data_path_str = "~/.context/training";
+  }
+
+  std::filesystem::path data_path = FileSystem::ResolvePath(data_path_str);
+
+  LOG_INFO("AFS Studio Starting...");
+  LOG_INFO("Data path: " + data_path.string());
+  LOG_INFO("Press F5 to refresh data");
+
+  afs::viz::App app(data_path.string());
+  return app.Run();
+}

apps/studio/src/models/state.h

@@ -0,0 +1,257 @@
+#pragma once
+
+#include <string>
+#include <vector>
+#include <deque>
+#include <filesystem>
+#include <array>
+#include <map>
+#include <imgui.h>
+
+namespace afs {
+namespace viz {
+
+enum class Workspace { Dashboard, Analysis, Optimization, Systems, Custom, Training, Context, Models };
+enum class ThemeProfile { Cobalt, Amber, Emerald, Cyberpunk, Monochrome, Solarized, Nord, Dracula, Default = Cobalt };
+
+enum class PlotKind {
+  None,
+  QualityTrends,
+  GeneratorEfficiency,
+  CoverageDensity,
+  TrainingLoss,
+  LossVsSamples,
+  DomainCoverage,
+  EmbeddingQuality,
+  AgentThroughput,
+  MissionQueue,
+  QualityDirection,
+  GeneratorMix,
+  EmbeddingDensity,
+  AgentUtilization,
+  MissionProgress,
+  EvalMetrics,
+  Rejections,
+  KnowledgeGraph,
+  LatentSpace,
+  Effectiveness,
+  Thresholds,
+  MountsStatus,
+};
+
+enum class GraphViewMode { Single, Compare, Overview };
+
+enum class GraphCategory {
+  Training,
+  Quality,
+  System,
+  Coverage,
+  Embedding,
+  Optimization,
+  All
+};
+
+struct MetricCard {
+  std::string label;
+  std::string value;
+  std::string sub_text;
+  ImVec4 color;
+  bool positive_trend = true;
+};
+
+struct AgentState {
+  std::string name;
+  std::string role;
+  std::string status;
+  bool enabled = true;
+  bool data_backed = false;
+  int queue_depth = 0;
+  int tasks_completed = 0;
+  float success_rate = 0.0f;
+  float avg_latency_ms = 0.0f;
+  float cpu_pct = 0.0f;
+  float mem_pct = 0.0f;
+  float activity_phase = 0.0f;
+};
+
+struct MissionState {
+  std::string name;
+  std::string owner;
+  std::string status;
+  bool data_backed = false;
+  int priority = 2;
+  float progress = 0.0f;
+};
+
+struct LogEntry {
+  std::string agent;
+  std::string message;
+  std::string kind;
+};
+
+struct FileEntry {
+  std::string name;
+  std::filesystem::path path;
+  bool is_directory;
+  uintmax_t size;
+  bool has_context = false;
+};
+
+struct ContextItem {
+  std::string name;
+  std::filesystem::path path;
+  std::string type;
+  bool enabled = true;
+};
+
+struct AppState {
+  // App-level flags
+  bool should_refresh = false;
+  bool show_demo_window = false;
+  bool auto_refresh = false;
+  bool simulate_activity = true;
+  bool verbose_logs = false;
+  bool compact_charts = false;
+  bool show_status_strip = true;
+  bool show_controls = true;
+  bool show_inspector = true;
+  bool show_dataset_panel = true;
+  bool show_systems_panel = true;
+  bool show_chat_panel = false;
+  bool show_quality_trends = false; // Default off, let layout init handle it
+  bool show_generator_efficiency = false;
+  bool show_coverage_density = false;
+  bool enable_viewports = true;
+  bool enable_docking = true;
+  bool reset_layout_on_workspace_change = false;
+  bool allow_workspace_scroll = false;
+  bool enable_plot_interaction = true;
+  bool plot_interaction_requires_modifier = true;
+  bool auto_chart_columns = true;
+  bool show_agent_details = true;
+  bool show_knowledge_graph = false;
+  
+  // Visual/Grid Config
+  float refresh_interval_sec = 8.0f;
+  float chart_height = 170.0f;
+  float plot_height = 170.0f;
+  float agent_activity_scale = 1.0f;
+  float embedding_sample_rate = 0.6f;
+  float quality_threshold = 0.7f;
+  float mission_priority_bias = 1.0f;
+  int mission_concurrency = 4;
+  int chart_columns = 3;
+  int spawn_agent_count = 1;
+  int spawn_mission_count = 1;
+  int new_mission_priority = 3;
+  int log_agent_index = 0;
+  int selected_agent_index = -1;
+  int selected_run_index = -1;
+  std::string selected_run_id;
+  std::vector<std::string> compared_run_ids;
+  int selected_generator_index = -1;
+  std::string selected_generator_name;
+  PlotKind focus_plot = PlotKind::None;
+  std::map<std::string, bool> domain_visibility;
+  Workspace current_workspace = Workspace::Dashboard;
+  ThemeProfile current_theme = ThemeProfile::Cobalt;
+  bool force_reset_layout = false;
+  bool lock_layout = false;
+  double last_refresh_time = 0.0;
+  
+  // Advanced Interaction
+  std::vector<PlotKind> active_floaters;
+  int layout_preset = 0; // 0: Default, 1: Analyst, 2: System
+  PlotKind inspector_context = PlotKind::None;
+
+  // Graph View System
+  GraphViewMode graph_view_mode = GraphViewMode::Single;
+  PlotKind active_graph = PlotKind::None;
+  std::vector<PlotKind> graph_history;
+  std::vector<PlotKind> graph_bookmarks;
+  int graph_history_index = -1;
+  bool show_graph_browser = true;
+  bool show_companion_panels = true;
+  GraphCategory browser_filter = GraphCategory::All;
+  std::string graph_search_query;
+  
+  // Per-graph filter settings
+  struct GraphFilterSettings {
+    std::vector<std::string> active_domains;
+    std::string active_run_id;
+    float time_range_start = 0.0f;
+    float time_range_end = 1.0f;
+  };
+  std::map<PlotKind, GraphFilterSettings> graph_filters;
+
+  // Comparison State
+  int compare_run_a = -1;
+  int compare_run_b = -1;
+  bool show_comparison_view = false;
+
+  // Chart Styling
+  float line_weight = 2.4f;
+
+  // Data Collections
+  std::vector<AgentState> agents;
+  std::vector<MissionState> missions;
+  std::deque<LogEntry> logs;
+  std::vector<float> sparkline_data;
+
+  // Input Buffers
+  std::array<char, 64> new_agent_name{};
+  std::array<char, 64> new_agent_role{};
+  std::array<char, 96> new_mission_name{};
+  std::array<char, 64> new_mission_owner{};
+  std::array<char, 128> log_filter{};
+  std::array<char, 96> run_filter{};
+  std::array<char, 96> generator_filter{};
+  std::array<char, 256> chat_input{};
+  std::array<char, 1024> system_prompt{};
+  std::array<char, 1024> user_prompt{};
+
+  // Trainer Config
+  float trainer_lr = 0.0005f;
+  int trainer_epochs = 10;
+  int trainer_batch_size = 32;
+  float generator_temp = 0.7f;
+  float rejection_threshold = 0.65f;
+
+  // Context Browser
+  std::filesystem::path current_browser_path;
+  std::vector<FileEntry> browser_entries;
+  std::vector<ContextItem> selected_context;
+  std::string context_filter;
+  std::filesystem::path selected_file_path;
+  bool show_hidden_files = false;
+
+  // Editor State
+  std::vector<uint8_t> binary_data;
+  bool is_binary_view = false;
+
+  // UI State Components
+  bool show_advanced_tables = true;
+  bool show_sparklines = true;
+  bool use_pulse_animations = true;
+  bool show_plot_legends = true;
+  bool show_plot_markers = true;
+  bool data_scientist_mode = false;
+  bool show_all_charts = true;
+  float pulse_timer = 0.0f;
+  int custom_grid_rows = 2;
+  int custom_grid_columns = 2;
+  PlotKind focus_chart = PlotKind::None; // Preferred over expanded_plot for dash integration
+  PlotKind expanded_plot = PlotKind::None;
+  bool is_rendering_expanded_plot = false;
+  std::vector<PlotKind> custom_grid_slots;
+
+  // Knowledge Graph
+  std::vector<std::string> knowledge_concepts;
+  std::vector<float> knowledge_nodes_x;
+  std::vector<float> knowledge_nodes_y;
+  struct Edge { int from, to; };
+  std::vector<Edge> knowledge_edges;
+};
+
+} // namespace viz
+} // namespace afs

apps/studio/src/themes/afs_theme.h

@@ -0,0 +1,125 @@
+#pragma once
+
+#include "imgui.h"
+#include "../models/state.h" // For ThemeProfile enum
+
+namespace afs::viz::themes {
+
+/// Apply the AFS dark theme to ImGui with specific profiles.
+inline void ApplyHafsTheme(ThemeProfile profile = ThemeProfile::Cobalt) {
+  ImGuiStyle& style = ImGui::GetStyle();
+
+  // Rounding & Padding for a GIMP-like technical look
+  style.WindowRounding = 0.0f;  // Professional tools often use square windows
+  style.FrameRounding = 2.0f;
+  style.GrabRounding = 2.0f;
+  style.PopupRounding = 2.0f;
+  style.ScrollbarRounding = 2.0f;
+  style.TabRounding = 0.0f;     // Square tabs
+  
+  style.WindowPadding = ImVec2(8, 8);   // Tighter
+  style.FramePadding = ImVec2(6, 4);    // Compact input fields
+  style.ItemSpacing = ImVec2(8, 4);     // Denser layout
+  style.ItemInnerSpacing = ImVec2(4, 4);
+  style.CellPadding = ImVec2(4, 2);
+  style.ScrollbarSize = 14.0f;
+  style.GrabMinSize = 10.0f;
+
+  ImVec4* colors = style.Colors;
+
+  // Base background (Deep neutral)
+  colors[ImGuiCol_WindowBg] = ImVec4(0.06f, 0.06f, 0.08f, 1.00f);
+  colors[ImGuiCol_ChildBg] = ImVec4(0.06f, 0.06f, 0.08f, 0.90f); // Darker, less transparent
+  colors[ImGuiCol_PopupBg] = ImVec4(0.08f, 0.08f, 0.10f, 0.98f);
+  colors[ImGuiCol_Border] = ImVec4(1.0f, 1.0f, 1.0f, 0.08f);
+  
+  // Profile specific colors
+  ImVec4 primary, secondary, accent;
+  
+  if (profile == ThemeProfile::Cobalt) {
+      primary = ImVec4(0.0f, 0.48f, 1.0f, 1.00f);     // Vivid Azure
+      secondary = ImVec4(0.12f, 0.14f, 0.18f, 1.00f); // Darker Midnight for contrast
+      accent = ImVec4(0.0f, 0.85f, 1.0f, 1.0f);       // Neon Cyan
+  } else if (profile == ThemeProfile::Amber) {
+      primary = ImVec4(1.00f, 0.60f, 0.00f, 1.00f);   // Bright Orange
+      secondary = ImVec4(0.20f, 0.10f, 0.05f, 1.00f); // Deep Rust
+      accent = ImVec4(1.00f, 0.90f, 0.30f, 1.00f);    // Electric Gold
+  } else if (profile == ThemeProfile::Emerald) {
+      primary = ImVec4(0.00f, 0.85f, 0.45f, 1.00f);   // Neon Green
+      secondary = ImVec4(0.05f, 0.15f, 0.10f, 1.00f); // Dark Jungle
+      accent = ImVec4(0.40f, 1.00f, 0.60f, 1.00f);    // Bright Mint
+  } else if (profile == ThemeProfile::Cyberpunk) {
+      primary = ImVec4(1.0f, 0.0f, 0.5f, 1.0f);       // Hot Pink
+      secondary = ImVec4(0.1f, 0.0f, 0.2f, 1.0f);     // Deep Purple
+      accent = ImVec4(0.0f, 1.0f, 1.0f, 1.0f);       // Cyan
+  } else if (profile == ThemeProfile::Monochrome) {
+      primary = ImVec4(0.8f, 0.8f, 0.8f, 1.0f);
+      secondary = ImVec4(0.1f, 0.1f, 0.1f, 1.00f);
+      accent = ImVec4(1.0f, 1.0f, 1.0f, 1.0f);
+  } else if (profile == ThemeProfile::Solarized) {
+      primary = ImVec4(0.15f, 0.45f, 0.55f, 1.0f);    // Blue
+      secondary = ImVec4(0.03f, 0.21f, 0.26f, 1.00f); // Base03
+      accent = ImVec4(0.52f, 0.60f, 0.00f, 1.0f);     // Green
+  } else if (profile == ThemeProfile::Nord) {
+      primary = ImVec4(0.53f, 0.75f, 0.82f, 1.0f);    // Frost
+      secondary = ImVec4(0.18f, 0.20f, 0.25f, 1.00f); // Polar Night
+      accent = ImVec4(0.56f, 0.80f, 0.71f, 1.0f);     // Frost/Teal
+  } else if (profile == ThemeProfile::Dracula) {
+      primary = ImVec4(0.74f, 0.57f, 0.97f, 1.0f);    // Purple
+      secondary = ImVec4(0.16f, 0.17f, 0.24f, 1.00f); // Background
+      accent = ImVec4(1.00f, 0.47f, 0.77f, 1.0f);     // Pink
+  } else { // Emerald (Fallback if Default or Cobalt)
+      primary = ImVec4(0.00f, 0.85f, 0.45f, 1.00f);   // Neon Green
+      secondary = ImVec4(0.05f, 0.15f, 0.10f, 1.00f); // Dark Jungle
+      accent = ImVec4(0.40f, 1.00f, 0.60f, 1.00f);    // Bright Mint
+  }
+
+  // Apply profile to components
+  colors[ImGuiCol_Header] = secondary;
+  colors[ImGuiCol_HeaderHovered] = primary;
+  colors[ImGuiCol_HeaderActive] = accent;
+
+  colors[ImGuiCol_Button] = secondary;
+  colors[ImGuiCol_ButtonHovered] = primary;
+  colors[ImGuiCol_ButtonActive] = accent;
+
+  colors[ImGuiCol_FrameBg] = ImVec4(1.0f, 1.0f, 1.0f, 0.04f);
+  colors[ImGuiCol_FrameBgHovered] = ImVec4(1.0f, 1.0f, 1.0f, 0.10f);
+  colors[ImGuiCol_FrameBgActive] = ImVec4(1.0f, 1.0f, 1.0f, 0.16f);
+
+  colors[ImGuiCol_Tab] = ImVec4(0.0f, 0.0f, 0.0f, 0.0f);
+  colors[ImGuiCol_TabHovered] = primary;
+  colors[ImGuiCol_TabActive] = secondary;
+  colors[ImGuiCol_TabUnfocused] = ImVec4(0.0f, 0.0f, 0.0f, 0.0f);
+  colors[ImGuiCol_TabUnfocusedActive] = secondary;
+
+  colors[ImGuiCol_TitleBg] = colors[ImGuiCol_WindowBg];
+  colors[ImGuiCol_TitleBgActive] = colors[ImGuiCol_WindowBg];
+  colors[ImGuiCol_TitleBgCollapsed] = colors[ImGuiCol_WindowBg];
+
+  colors[ImGuiCol_PlotLines] = primary;
+  colors[ImGuiCol_PlotLinesHovered] = accent;
+  colors[ImGuiCol_PlotHistogram] = primary;
+  colors[ImGuiCol_PlotHistogramHovered] = accent;
+
+  colors[ImGuiCol_Text] = ImVec4(0.95f, 0.95f, 1.00f, 1.00f);
+  colors[ImGuiCol_TextDisabled] = ImVec4(0.50f, 0.50f, 0.50f, 1.00f);
+  
+  colors[ImGuiCol_Separator] = colors[ImGuiCol_Border];
+}
+
+/// Apply a light theme variant.
+inline void ApplyHafsLightTheme() {
+  ImGui::StyleColorsLight();
+  ImGuiStyle& style = ImGui::GetStyle();
+
+  style.WindowRounding = 4.0f;
+  style.FrameRounding = 2.0f;
+  style.GrabRounding = 2.0f;
+
+  ImVec4* colors = style.Colors;
+  colors[ImGuiCol_PlotLines] = ImVec4(0.20f, 0.50f, 0.80f, 1.00f);
+  colors[ImGuiCol_PlotHistogram] = ImVec4(0.20f, 0.70f, 0.50f, 1.00f);
+}
+
+}  // namespace afs::viz::themes

apps/studio/src/ui/charts/chart.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <string>
+#include <implot.h>
+#include "../../models/state.h"
+#include "../../data_loader.h"
+
+namespace afs::viz::ui {
+
+class Chart {
+public:
+    virtual ~Chart() = default;
+
+    // Render the chart content. 
+    // Return true if the chart is visible/active, false if closed.
+    virtual void Render(AppState& state, const DataLoader& loader) = 0;
+
+    // Optional: Get the chart title/ID
+    virtual std::string GetTitle() const = 0;
+    
+    // Optional: Get the chart kind
+    virtual PlotKind GetKind() const = 0;
+};
+
+} // namespace afs::viz::ui

apps/studio/src/ui/charts/coverage_density.cc

@@ -0,0 +1,85 @@
+#include "coverage_density.h"
+#include "../core.h"
+#include <vector>
+
+namespace afs::viz::ui {
+
+void CoverageDensityChart::Render(AppState& state, const DataLoader& loader) {
+  RenderChartHeader(PlotKind::CoverageDensity,
+                    "DENSITY COVERAGE",
+                    "Displays sample counts across latent space regions. Sparse regions (<50% of avg) indicate under-sampled scenarios.",
+                    state);
+
+  const auto& regions = loader.GetEmbeddingRegions();
+
+  if (regions.empty()) {
+    ImGui::TextDisabled("No embedding coverage data available");
+    return;
+  }
+
+  // Scatter plot of region densities
+  std::vector<float> dense_x, dense_y, sparse_x, sparse_y;
+  float total = 0.0f;
+  for (const auto& r : regions) total += static_cast<float>(r.sample_count);
+  float avg = total / static_cast<float>(regions.size());
+
+  for (size_t i = 0; i < regions.size(); ++i) {
+    float x = static_cast<float>(i);
+    float y = static_cast<float>(regions[i].sample_count);
+    if (y < avg * 0.5f) {
+      sparse_x.push_back(x);
+      sparse_y.push_back(y);
+    } else {
+      dense_x.push_back(x);
+      dense_y.push_back(y);
+    }
+  }
+
+  ImPlotFlags plot_flags = BasePlotFlags(state, true);
+  
+  ApplyPremiumPlotStyles("##Coverage", state);
+  if (ImPlot::BeginPlot("##Coverage", ImGui::GetContentRegionAvail(), plot_flags)) {
+    ImPlotAxisFlags axis_flags = static_cast<ImPlotAxisFlags>(GetPlotAxisFlags(state));
+    ImPlot::SetupAxes("Region Index", "Samples", axis_flags, axis_flags);
+    if (state.show_plot_legends) {
+      ImPlot::SetupLegend(ImPlotLocation_NorthEast, ImPlotLegendFlags_None);
+    }
+    HandlePlotContextMenu(PlotKind::CoverageDensity, state);
+    
+    // Low Density Zone Overlay
+    double lx[2] = {-10, static_cast<double>(regions.size() + 10)};
+    double ly1[2] = {0, 0};
+    double ly2[2] = {avg * 0.5, avg * 0.5};
+    ImPlot::SetNextFillStyle(ImVec4(1, 0.5f, 0, 0.1f));
+    ImPlot::PlotShaded("Sparse Zone", lx, ly1, ly2, 2);
+
+    ImVec4 healthy_color = GetSeriesColor(2);
+    ImVec4 risk_color = GetSeriesColor(7);
+    ImPlot::SetNextMarkerStyle(ImPlotMarker_Circle, 4, healthy_color);
+    ImPlot::PlotScatter("Healthy", dense_x.data(), dense_y.data(), (int)dense_x.size());
+    
+    ImPlot::SetNextMarkerStyle(ImPlotMarker_Circle, 4, risk_color);
+    ImPlot::PlotScatter("At Risk", sparse_x.data(), sparse_y.data(), (int)sparse_x.size());
+
+    // Custom Tooltip
+    if (ImPlot::IsPlotHovered()) {
+      ImPlotPoint mouse = ImPlot::GetPlotMousePos();
+      int idx = (int)std::round(mouse.x);
+      if (idx >= 0 && idx < (int)regions.size()) {
+        ImGui::BeginTooltip();
+        ImGui::Text("Region Index: %d", idx);
+        ImGui::Text("Samples: %d", regions[idx].sample_count);
+        ImGui::Text("Avg Quality: %.3f", regions[idx].avg_quality);
+        ImGui::Separator();
+        ImGui::TextDisabled("Status: %s", regions[idx].sample_count < avg * 0.5f ? "Sparse (Under-sampled)" : "Healthy Density");
+        ImGui::EndTooltip();
+      }
+    }
+    
+    ImPlot::EndPlot();
+  }
+  ImPlot::PopStyleColor(2);
+  ImPlot::PopStyleVar(6);
+}
+
+} // namespace afs::viz::ui

apps/studio/src/ui/charts/coverage_density.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include "chart.h"
+#include "../../data_loader.h"
+#include "../../models/state.h"
+
+namespace afs::viz::ui {
+
+class CoverageDensityChart : public Chart {
+public:
+  void Render(AppState& state, const DataLoader& loader) override;
+  std::string GetTitle() const override { return "Density Coverage"; }
+  PlotKind GetKind() const override { return PlotKind::CoverageDensity; }
+};
+
+} // namespace afs::viz::ui

apps/studio/src/ui/charts/generator_efficiency.cc

@@ -0,0 +1,97 @@
+#include "generator_efficiency.h"
+#include "../core.h"
+#include <algorithm>
+#include <vector>
+#include <string>
+
+namespace afs::viz::ui {
+
+void GeneratorEfficiencyChart::Render(AppState& state, const DataLoader& loader) {
+  RenderChartHeader(PlotKind::GeneratorEfficiency,
+                    "GENERATOR EFFICIENCY",
+                    "Acceptance rates for active data generators. Rates < 40% (Warning Zone) indicate generators struggling with current model constraints.",
+                    state);
+
+  const auto& stats = loader.GetGeneratorStats();
+  if (stats.empty()) {
+    ImGui::TextDisabled("No generator stats available");
+    return;
+  }
+  
+  struct GeneratorRow {
+    std::string name;
+    float rate = 0.0f;
+  };
+  std::vector<GeneratorRow> rows;
+  rows.reserve(stats.size());
+  for (const auto& s : stats) {
+    std::string name = s.name;
+    size_t pos = name.find("DataGenerator");
+    if (pos != std::string::npos) name = name.substr(0, pos);
+    rows.push_back({name, s.acceptance_rate * 100.0f});
+  }
+  std::sort(rows.begin(), rows.end(),
+            [](const auto& a, const auto& b) { return a.rate > b.rate; });
+
+  std::vector<const char*> labels;
+  std::vector<float> rates;
+  std::vector<std::string> label_storage;
+  labels.reserve(rows.size());
+  rates.reserve(rows.size());
+  label_storage.reserve(rows.size());
+  for (const auto& row : rows) {
+    label_storage.push_back(row.name);
+    rates.push_back(row.rate);
+  }
+  for (const auto& s : label_storage) labels.push_back(s.c_str());
+
+  if (!rows.empty()) {
+    const auto& top = rows.front();
+    const auto& bottom = rows.back();
+    ImGui::TextDisabled("Top: %s (%.1f%%)  |  Bottom: %s (%.1f%%)",
+                        top.name.c_str(), top.rate, bottom.name.c_str(), bottom.rate);
+  }
+
+  ImPlotFlags plot_flags = BasePlotFlags(state, false);
+  ApplyPremiumPlotStyles("##GeneratorStats", state);
+  if (ImPlot::BeginPlot("##GeneratorStats", ImGui::GetContentRegionAvail(), plot_flags)) {
+    ImPlotAxisFlags axis_flags = static_cast<ImPlotAxisFlags>(GetPlotAxisFlags(state));
+    ImPlot::SetupAxes("Generator", "Acceptance %", axis_flags, axis_flags);
+    ImPlot::SetupAxisLimits(ImAxis_Y1, 0.0, 100.0, ImPlotCond_Once);
+    if (!labels.empty()) {
+      ImPlot::SetupAxisTicks(ImAxis_X1, 0, static_cast<double>(labels.size() - 1),
+                             static_cast<int>(labels.size()), labels.data());
+    }
+    HandlePlotContextMenu(PlotKind::GeneratorEfficiency, state);
+    
+    // Warning Zone Overlay
+    double wx[2] = {-1, 100};
+    double wy1[2] = {0, 0};
+    double wy2[2] = {40, 40};
+    ImPlot::SetNextFillStyle(ImVec4(1, 0, 0, 0.1f));
+    ImPlot::PlotShaded("Low Efficiency", wx, wy1, wy2, 2);
+
+    ImPlot::SetNextFillStyle(GetSeriesColor(1), 0.8f);
+    ImPlot::PlotBars("Rate", rates.data(), static_cast<int>(rates.size()), 0.67);
+
+    // Custom Tooltip
+    if (ImPlot::IsPlotHovered()) {
+      ImPlotPoint mouse = ImPlot::GetPlotMousePos();
+      int idx = (int)std::round(mouse.x);
+      if (idx >= 0 && idx < (int)rates.size()) {
+        ImGui::BeginTooltip();
+        ImGui::Text("Generator: %s", label_storage[idx].c_str());
+        ImGui::Text("Acceptance Rate: %.1f%%", rates[idx]);
+        ImGui::Separator();
+        ImGui::TextDisabled("Status: %s", rates[idx] < 40.0f ? "WARNING (Low Efficiency)" : "Healthy");
+        ImGui::EndTooltip();
+      }
+    }
+
+    ImPlot::EndPlot();
+  }
+  ImPlot::PopStyleColor(2);
+  ImPlot::PopStyleVar(6);
+}
+
+} // namespace afs::viz::ui

apps/studio/src/ui/charts/generator_efficiency.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include "chart.h"
+#include "../../data_loader.h"
+#include "../../models/state.h"
+
+namespace afs::viz::ui {
+
+class GeneratorEfficiencyChart : public Chart {
+public:
+  void Render(AppState& state, const DataLoader& loader) override;
+  std::string GetTitle() const override { return "Generator Efficiency"; }
+  PlotKind GetKind() const override { return PlotKind::GeneratorEfficiency; }
+};
+
+} // namespace afs::viz::ui

apps/studio/src/ui/charts/quality_trends.cc

@@ -0,0 +1,118 @@
+#include "quality_trends.h"
+#include "../core.h"
+#include <algorithm>
+#include <vector>
+
+namespace afs::viz::ui {
+
+void QualityTrendsChart::Render(AppState& state, const DataLoader& loader) {
+  RenderChartHeader(PlotKind::QualityTrends,
+                    "QUALITY TRENDS",
+                    "Displays model performance metrics across active training domains. Solid lines indicate scores; shaded area indicates the Optimal Strategy Zone (>0.85).",
+                    state);
+
+  const auto& trends = loader.GetQualityTrends();
+  if (trends.empty()) {
+    ImGui::TextDisabled("No quality trend data available");
+    return;
+  }
+
+  size_t max_len = 0;
+  for (const auto& trend : trends) {
+    max_len = std::max(max_len, trend.values.size());
+  }
+
+  std::vector<float> mean_values;
+  if (max_len > 0) {
+    mean_values.assign(max_len, 0.0f);
+    std::vector<int> counts(max_len, 0);
+    for (const auto& trend : trends) {
+      if (state.domain_visibility.count(trend.domain) && !state.domain_visibility.at(trend.domain)) continue;
+      for (size_t i = 0; i < trend.values.size(); ++i) {
+        mean_values[i] += trend.values[i];
+        counts[i] += 1;
+      }
+    }
+    for (size_t i = 0; i < max_len; ++i) {
+      if (counts[i] > 0) mean_values[i] /= static_cast<float>(counts[i]);
+    }
+  }
+
+  ImPlotFlags plot_flags = BasePlotFlags(state, true);
+
+  ApplyPremiumPlotStyles("##QualityTrends", state);
+  if (ImPlot::BeginPlot("##QualityTrends", ImGui::GetContentRegionAvail(), plot_flags)) {
+    ImPlotAxisFlags axis_flags = static_cast<ImPlotAxisFlags>(GetPlotAxisFlags(state));
+    ImPlot::SetupAxes("Time Step", "Score (0-1)", axis_flags, axis_flags);
+    ImPlot::SetupAxisLimits(ImAxis_Y1, 0.0, 1.1, ImPlotCond_Always);
+    if (state.show_plot_legends) {
+      ImPlot::SetupLegend(ImPlotLocation_NorthEast, ImPlotLegendFlags_None);
+    }
+    HandlePlotContextMenu(PlotKind::QualityTrends, state);
+    
+    // Help markers and goal regions...
+    double goal_x[2] = {-100, 1000};
+    double goal_y1[2] = {static_cast<double>(state.quality_threshold), static_cast<double>(state.quality_threshold)};
+    double goal_y2[2] = {1.1, 1.1};
+    ImPlot::SetNextFillStyle(ImVec4(0, 1, 0, 0.05f));
+    ImPlot::PlotShaded("Goal Region", goal_x, goal_y1, goal_y2, 2);
+    
+    ImPlot::SetNextLineStyle(ImVec4(0, 1, 0, 0.4f), 1.0f);
+    ImPlot::PlotLine("Requirement", goal_x, goal_y1, 2);
+
+    int color_index = 0;
+    for (const auto& trend : trends) {
+      if (trend.values.empty()) continue;
+      if (state.domain_visibility.count(trend.domain) && !state.domain_visibility.at(trend.domain)) {
+          color_index++;
+          continue;
+      }
+      std::string label = trend.domain + " (" + trend.metric + ")";
+      ImVec4 series_color = GetSeriesColor(color_index++);
+      ImPlot::SetNextLineStyle(series_color, 2.2f);
+      if (state.show_plot_markers) {
+        ImPlot::SetNextMarkerStyle(ImPlotMarker_Circle, 4.0f, series_color);
+      }
+      ImPlot::SetNextFillStyle(series_color, 0.12f);
+      ImPlot::PlotLine(label.c_str(), trend.values.data(), (int)trend.values.size());
+      
+      // Annotation for latest value
+      if (!trend.values.empty()) {
+        float last_val = trend.values.back();
+        ImPlot::Annotation((double)(trend.values.size() - 1), (double)last_val, 
+                           series_color, ImVec2(10, -10), true, "%.2f", last_val);
+      }
+    }
+
+    if (!mean_values.empty()) {
+      ImPlot::SetNextLineStyle(ImVec4(1, 1, 1, 0.7f), 2.0f);
+      ImPlot::PlotLine("Mean", mean_values.data(), static_cast<int>(mean_values.size()));
+    }
+
+    // Custom Tooltip
+    if (ImPlot::IsPlotHovered()) {
+      ImPlotPoint mouse = ImPlot::GetPlotMousePos();
+      int x = (int)std::round(mouse.x);
+      if (x >= 0 && x < (int)max_len) {
+        ImGui::BeginTooltip();
+        ImGui::Text("Step: %d", x);
+        ImGui::Separator();
+        for (const auto& trend : trends) {
+          if (x < (int)trend.values.size()) {
+            if (state.domain_visibility.count(trend.domain) && !state.domain_visibility.at(trend.domain)) continue;
+            ImGui::ColorButton("##color", GetSeriesColor(&trend - &trends[0]), ImGuiColorEditFlags_NoTooltip);
+            ImGui::SameLine();
+            ImGui::Text("%s: %.3f", trend.domain.c_str(), trend.values[x]);
+          }
+        }
+        ImGui::EndTooltip();
+      }
+    }
+    
+    ImPlot::EndPlot();
+  }
+  ImPlot::PopStyleColor(2);
+  ImPlot::PopStyleVar(6);
+}
+
+} // namespace afs::viz::ui

apps/studio/src/ui/charts/quality_trends.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#include "chart.h"
+
+namespace afs::viz::ui {
+
+class QualityTrendsChart : public Chart {
+public:
+    void Render(AppState& state, const DataLoader& loader) override;
+    std::string GetTitle() const override { return "Quality Trends"; }
+    PlotKind GetKind() const override { return PlotKind::QualityTrends; }
+};
+
+} // namespace afs::viz::ui

apps/studio/src/ui/components/charts.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <imgui.h>
+#include "../../models/state.h"
+#include "../../data_loader.h"
+
+namespace afs {
+namespace viz {
+namespace ui {
+
+void RenderQualityChart(AppState& state, const DataLoader& loader);
+void RenderGeneratorChart(AppState& state, const DataLoader& loader);
+void RenderCoverageChart(AppState& state, const DataLoader& loader);
+void RenderTrainingChart(AppState& state, const DataLoader& loader);
+void RenderTrainingLossChart(AppState& state, const DataLoader& loader);
+void RenderRejectionChart(AppState& state, const DataLoader& loader);
+void RenderQualityDirectionChart(AppState& state, const DataLoader& loader);
+void RenderGeneratorMixChart(AppState& state, const DataLoader& loader);
+void RenderEmbeddingDensityChart(AppState& state, const DataLoader& loader);
+void RenderAgentUtilizationChart(AppState& state, const DataLoader& loader);
+void RenderMissionProgressChart(AppState& state, const DataLoader& loader);
+void RenderEvalMetricsChart(AppState& state, const DataLoader& loader);
+void RenderEffectivenessChart(AppState& state, const DataLoader& loader);
+void RenderThresholdOptimizationChart(AppState& state, const DataLoader& loader);
+void RenderMountsChart(AppState& state, const DataLoader& loader);
+void RenderDomainCoverageChart(AppState& state, const DataLoader& loader);
+void RenderEmbeddingQualityChart(AppState& state, const DataLoader& loader);
+void RenderAgentThroughputChart(AppState& state, const DataLoader& loader);
+void RenderMissionQueueChart(AppState& state, const DataLoader& loader);
+void RenderLatentSpaceChart(AppState& state, const DataLoader& loader);
+
+void RenderPlotByKind(PlotKind kind, AppState& state, const DataLoader& loader);
+
+} // namespace ui
+} // namespace viz
+} // namespace afs

apps/studio/src/ui/components/companion_panels.cc

@@ -0,0 +1,282 @@
+#include "companion_panels.h"
+#include "graph_browser.h"
+#include "../core.h"
+#include "../../icons.h"
+#include <imgui.h>
+
+namespace afs::viz::ui {
+
+CompanionPanels::PanelVisibility CompanionPanels::GetPanelVisibility(PlotKind kind) const {
+    PanelVisibility vis;
+    
+    // Define which panels each graph type needs
+    switch (kind) {
+        case PlotKind::QualityTrends:
+        case PlotKind::GeneratorEfficiency:
+        case PlotKind::CoverageDensity:
+        case PlotKind::TrainingLoss:
+        case PlotKind::DomainCoverage:
+        case PlotKind::EmbeddingQuality:
+        case PlotKind::Rejections:
+        case PlotKind::EvalMetrics:
+        case PlotKind::EmbeddingDensity:
+        case PlotKind::LatentSpace:
+            vis.filter = true;
+            vis.data_quality = true;
+            vis.inspector = true;
+            vis.controls = true;
+            break;
+            
+        case PlotKind::GeneratorMix:
+        case PlotKind::Effectiveness:
+        case PlotKind::Thresholds:
+        case PlotKind::LossVsSamples:
+        case PlotKind::QualityDirection:
+            vis.filter = true;
+            vis.data_quality = true;
+            vis.controls = true;
+            break;
+            
+        case PlotKind::AgentUtilization:
+        case PlotKind::AgentThroughput:
+        case PlotKind::MountsStatus:
+            vis.data_quality = true;
+            vis.inspector = true;
+            break;
+            
+        case PlotKind::MissionProgress:
+        case PlotKind::MissionQueue:
+        case PlotKind::KnowledgeGraph:
+            vis.controls = true;
+            break;
+            
+        default:
+            break;
+    }
+    
+    return vis;
+}
+
+void CompanionPanels::Render(AppState& state, const DataLoader& loader) {
+    if (!state.show_companion_panels || state.active_graph == PlotKind::None) {
+        return;
+    }
+    
+    auto visibility = GetPanelVisibility(state.active_graph);
+    
+    // Render each panel in a collapsible section
+    if (visibility.filter) {
+        if (ImGui::CollapsingHeader(ICON_MD_FILTER_ALT " Filters", ImGuiTreeNodeFlags_DefaultOpen)) {
+            RenderFilterPanel(state, loader);
+        }
+        ImGui::Spacing();
+    }
+    
+    if (visibility.data_quality) {
+        if (ImGui::CollapsingHeader(ICON_MD_BAR_CHART " Data Quality", ImGuiTreeNodeFlags_DefaultOpen)) {
+            RenderDataQualityPanel(state, loader);
+        }
+        ImGui::Spacing();
+    }
+    
+    if (visibility.inspector) {
+        if (ImGui::CollapsingHeader(ICON_MD_INFO " Inspector", ImGuiTreeNodeFlags_DefaultOpen)) {
+            RenderInspectorPanel(state, loader);
+        }
+        ImGui::Spacing();
+    }
+    
+    if (visibility.controls) {
+        if (ImGui::CollapsingHeader(ICON_MD_TUNE " Controls", ImGuiTreeNodeFlags_DefaultOpen)) {
+            RenderControlsPanel(state);
+        }
+    }
+}
+
+void CompanionPanels::RenderFilterPanel(AppState& state, const DataLoader& loader) {
+    // Get or create filter settings for this graph
+    auto& filters = state.graph_filters[state.active_graph];
+    
+    // Domain filtering
+    const auto& domain_vis = loader.GetDomainVisibility();
+    if (!domain_vis.empty()) {
+        ImGui::Text("Domains:");
+        ImGui::Indent();
+        
+        for (const auto& [domain, visible] : domain_vis) {
+            bool is_active = std::find(filters.active_domains.begin(), 
+                                      filters.active_domains.end(), 
+                                      domain) != filters.active_domains.end();
+            
+            if (filters.active_domains.empty()) {
+                // If no explicit filter, show all
+                is_active = true;
+            }
+            
+            if (ImGui::Checkbox(domain.c_str(), &is_active)) {
+                if (is_active) {
+                    if (std::find(filters.active_domains.begin(), 
+                                 filters.active_domains.end(), domain) == filters.active_domains.end()) {
+                        filters.active_domains.push_back(domain);
+                    }
+                } else {
+                    filters.active_domains.erase(
+                        std::remove(filters.active_domains.begin(), 
+                                   filters.active_domains.end(), domain),
+                        filters.active_domains.end()
+                    );
+                }
+            }
+        }
+        
+        if (ImGui::Button("Clear All")) {
+            filters.active_domains.clear();
+        }
+        ImGui::SameLine();
+        if (ImGui::Button("Select All")) {
+            filters.active_domains.clear();
+            for (const auto& [domain, _] : domain_vis) {
+                filters.active_domains.push_back(domain);
+            }
+        }
+        
+        ImGui::Unindent();
+        ImGui::Spacing();
+    }
+    
+    // Run filtering (for training graphs)
+    const auto& runs = loader.GetTrainingRuns();
+    if (!runs.empty()) {
+        ImGui::Text("Training Run:");
+        ImGui::SetNextItemWidth(-FLT_MIN);
+        
+        if (ImGui::BeginCombo("##RunFilter", 
+                             filters.active_run_id.empty() ? "All Runs" : filters.active_run_id.c_str())) {
+            if (ImGui::Selectable("All Runs", filters.active_run_id.empty())) {
+                filters.active_run_id.clear();
+            }
+            
+            for (const auto& run : runs) {
+                bool is_selected = filters.active_run_id == run.run_id;
+                if (ImGui::Selectable(run.run_id.c_str(), is_selected)) {
+                    filters.active_run_id = run.run_id;
+                }
+            }
+            ImGui::EndCombo();
+        }
+    }
+}
+
+void CompanionPanels::RenderDataQualityPanel(AppState& state, const DataLoader& loader) {
+    const auto& status = loader.GetLastStatus();
+    
+    // Data freshness indicator
+    ImVec4 freshness_color = ImVec4(0.2f, 0.8f, 0.2f, 1.0f); // Green
+    const char* freshness_text = "Fresh";
+    
+    double time_since_refresh = ImGui::GetTime() - state.last_refresh_time;
+    if (time_since_refresh > state.refresh_interval_sec * 2) {
+        freshness_color = ImVec4(0.8f, 0.2f, 0.2f, 1.0f); // Red
+        freshness_text = "Stale";
+    } else if (time_since_refresh > state.refresh_interval_sec) {
+        freshness_color = ImVec4(0.8f, 0.8f, 0.2f, 1.0f); // Yellow
+        freshness_text = "Aging";
+    }
+    
+    ImGui::TextColored(freshness_color, ICON_MD_CIRCLE);
+    ImGui::SameLine();
+    ImGui::Text("%s", freshness_text);
+    
+    if (ImGui::IsItemHovered()) {
+        ImGui::BeginTooltip();
+        ImGui::Text("Last refresh: %.1fs ago", time_since_refresh);
+        ImGui::EndTooltip();
+    }
+    
+    ImGui::Spacing();
+    ImGui::Separator();
+    ImGui::Spacing();
+    
+    // Data source status
+    ImGui::Text("Data Sources:");
+    ImGui::Indent();
+    
+    if (status.quality_ok) {
+        ImGui::TextColored(ImVec4(0.2f, 0.8f, 0.2f, 1.0f), ICON_MD_CHECK);
+        ImGui::SameLine();
+        ImGui::Text("Quality Trends (%d samples)", static_cast<int>(loader.GetQualityTrends().size()));
+    }
+    
+    if (status.active_ok) {
+        ImGui::TextColored(ImVec4(0.2f, 0.8f, 0.2f, 1.0f), ICON_MD_CHECK);
+        ImGui::SameLine();
+        const auto& cov = loader.GetCoverage();
+        ImGui::Text("Coverage (%d samples)", cov.total_samples);
+    }
+    
+    if (status.training_ok) {
+        ImGui::TextColored(ImVec4(0.2f, 0.8f, 0.2f, 1.0f), ICON_MD_CHECK);
+        ImGui::SameLine();
+        ImGui::Text("Training Runs (%d)", static_cast<int>(loader.GetTrainingRuns().size()));
+    }
+    
+    // Generator stats check removed - not in LoadStatus
+    
+    ImGui::Unindent();
+    
+    if (status.error_count > 0) {
+        ImGui::Spacing();
+        ImGui::TextColored(ImVec4(0.8f, 0.2f, 0.2f, 1.0f), ICON_MD_WARNING " %d errors", status.error_count);
+        if (!status.last_error.empty() && ImGui::IsItemHovered()) {
+            ImGui::BeginTooltip();
+            ImGui::Text("%s", status.last_error.c_str());
+            ImGui::EndTooltip();
+        }
+    }
+}
+
+void CompanionPanels::RenderInspectorPanel(AppState& state, const DataLoader& loader) {
+    // Note: ImPlot::IsPlotHovered() can only be called within BeginPlot/EndPlot.
+    // Since this panel renders separately, we show static info instead.
+    ImGui::TextDisabled("Hover over graph for details");
+
+    // Graph-specific inspection data
+    ImGui::Separator();
+    ImGui::Spacing();
+
+    // Show currently active graph info
+    const char* graph_name = "None";
+    switch (state.active_graph) {
+        case PlotKind::QualityTrends: graph_name = "Quality Trends"; break;
+        case PlotKind::GeneratorEfficiency: graph_name = "Generator Efficiency"; break;
+        case PlotKind::CoverageDensity: graph_name = "Coverage Density"; break;
+        case PlotKind::TrainingLoss: graph_name = "Training Loss"; break;
+        case PlotKind::DomainCoverage: graph_name = "Domain Coverage"; break;
+        case PlotKind::EmbeddingQuality: graph_name = "Embedding Quality"; break;
+        case PlotKind::Rejections: graph_name = "Rejections"; break;
+        case PlotKind::EvalMetrics: graph_name = "Eval Metrics"; break;
+        case PlotKind::AgentUtilization: graph_name = "Agent Utilization"; break;
+        case PlotKind::MountsStatus: graph_name = "Mounts Status"; break;
+        default: break;
+    }
+    ImGui::Text("Graph: %s", graph_name);
+    ImGui::TextDisabled("Click points for detailed info");
+}
+
+void CompanionPanels::RenderControlsPanel(AppState& state) {
+    ImGui::Text("Visual Settings:");
+    ImGui::Spacing();
+    
+    ImGui::SliderFloat("Line Weight", &state.line_weight, 1.0f, 5.0f, "%.1f");
+    ImGui::Checkbox("Show Markers", &state.show_plot_markers);
+    ImGui::Checkbox("Show Legend", &state.show_plot_legends);
+    
+    ImGui::Spacing();
+    ImGui::Separator();
+    ImGui::Spacing();
+    
+    ImGui::Text("Graph Height:");
+    ImGui::SliderFloat("##PlotHeight", &state.plot_height, 100.0f, 600.0f, "%.0f px");
+}
+
+} // namespace afs::viz::ui

apps/studio/src/ui/components/companion_panels.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <string>
+#include "../../models/state.h"
+#include "../../data_loader.h"
+
+namespace afs::viz::ui {
+
+class CompanionPanels {
+public:
+    CompanionPanels() = default;
+    
+    // Render all active companion panels for the current graph
+    void Render(AppState& state, const DataLoader& loader);
+    
+private:
+    void RenderFilterPanel(AppState& state, const DataLoader& loader);
+    void RenderDataQualityPanel(AppState& state, const DataLoader& loader);
+    void RenderInspectorPanel(AppState& state, const DataLoader& loader);
+    void RenderControlsPanel(AppState& state);
+    
+    // Helper to determine which panels should be visible
+    struct PanelVisibility {
+        bool filter = false;
+        bool data_quality = false;
+        bool inspector = false;
+        bool controls = false;
+    };
+    
+    PanelVisibility GetPanelVisibility(PlotKind kind) const;
+};
+
+} // namespace afs::viz::ui

apps/studio/src/ui/components/comparison_view.cc

@@ -0,0 +1,73 @@
+#include "tabs.h"
+#include "../../icons.h"
+#include "../core.h"
+#include <implot.h>
+#include <algorithm>
+
+namespace afs {
+namespace viz {
+namespace ui {
+
+void RenderComparisonView(AppState& state, const DataLoader& loader, ImFont* font_ui, ImFont* font_header) {
+    const auto& runs = loader.GetTrainingRuns();
+    
+    // Header
+    if (font_header) ImGui::PushFont(font_header);
+    ImGui::Text(ICON_MD_COMPARE " MODEL COMPARISON");
+    if (font_header) ImGui::PopFont();
+    ImGui::Separator();
+    
+    ImGui::Columns(2, "CompareColumns", true);
+    
+    auto render_selector = [&](int& selected_idx, const char* label) {
+        std::string preview = (selected_idx >= 0 && selected_idx < runs.size()) 
+                              ? runs[selected_idx].run_id 
+                              : "Select Model...";
+        if (ImGui::BeginCombo(label, preview.c_str())) {
+            for (int i = 0; i < (int)runs.size(); ++i) {
+                bool is_selected = (selected_idx == i);
+                if (ImGui::Selectable(runs[i].run_id.c_str(), is_selected)) {
+                    selected_idx = i;
+                }
+            }
+            ImGui::EndCombo();
+        }
+    };
+
+    render_selector(state.compare_run_a, "##ModelA");
+    ImGui::NextColumn();
+    render_selector(state.compare_run_b, "##ModelB");
+    ImGui::NextColumn();
+    
+    ImGui::Separator();
+    
+    if (state.compare_run_a >= 0 && state.compare_run_b >= 0) {
+        const auto& run_a = runs[state.compare_run_a];
+        const auto& run_b = runs[state.compare_run_b];
+        
+        // Detailed diffing logic would go here
+        ImGui::Columns(2, "MetricDiff", false);
+        
+        auto draw_metric = [&](const char* name, float val_a, float val_b) {
+            ImGui::Text("%s", name);
+            ImGui::NextColumn();
+            ImGui::Text("%.4f vs %.4f", val_a, val_b);
+            float diff = val_b - val_a;
+            ImGui::SameLine();
+            if (diff > 0.001f) ImGui::TextColored(ImVec4(0.4f, 1.0f, 0.4f, 1.0f), " (▲%.2f%%)", (diff/val_a)*100.0f);
+            else if (diff < -0.001f) ImGui::TextColored(ImVec4(1.0f, 0.4f, 0.4f, 1.0f), " (▼%.2f%%)", (std::abs(diff)/val_a)*100.0f);
+            ImGui::NextColumn();
+        };
+
+        draw_metric("Final Loss", run_a.final_loss, run_b.final_loss);
+        // ... more metrics
+        
+        ImGui::Columns(1);
+    } else {
+        ImGui::TextDisabled("Select two models above to compare performance metrics.");
+    }
+}
+
+} // namespace ui
+} // namespace viz
+} // namespace afs

apps/studio/src/ui/components/deployment_panel.cc

@@ -0,0 +1,367 @@
+#include "deployment_panel.h"
+
+#include <imgui.h>
+
+#include <cstring>
+
+namespace afs {
+namespace studio {
+namespace ui {
+
+DeploymentPanel::DeploymentPanel() {
+  // Default test prompt
+  std::strncpy(test_prompt_buffer_.data(),
+               "Write a simple NOP instruction in 65816 assembly:",
+               test_prompt_buffer_.size() - 1);
+}
+
+void DeploymentPanel::Render(const ModelMetadata* selected_model) {
+  if (!selected_model) {
+    ImGui::TextDisabled("Select a model to view deployment options.");
+    return;
+  }
+
+  const auto& model = *selected_model;
+
+  // Header
+  ImGui::Text("%s", model.display_name.empty() ? model.model_id.c_str()
+                                                 : model.display_name.c_str());
+  ImGui::Separator();
+
+  // Status display
+  if (is_busy_ || !status_message_.empty()) {
+    RenderDeploymentStatus();
+  }
+
+  // Quick actions
+  RenderQuickActions(model);
+
+  ImGui::Spacing();
+  ImGui::Separator();
+
+  // Ollama deployment section
+  if (ImGui::CollapsingHeader("Deploy to Ollama",
+                               ImGuiTreeNodeFlags_DefaultOpen)) {
+    RenderOllamaDeployment(model);
+  }
+
+  // Conversion options
+  if (ImGui::CollapsingHeader("Format Conversion")) {
+    RenderConversionOptions(model);
+  }
+
+  // Test prompt
+  if (ImGui::CollapsingHeader("Test Model")) {
+    RenderTestPrompt(model);
+  }
+}
+
+void DeploymentPanel::RenderDeploymentStatus() {
+  if (is_busy_) {
+    ImGui::TextColored(ImVec4(0.2f, 0.7f, 0.9f, 1.0f), "%s",
+                       current_operation_.c_str());
+    ImGui::ProgressBar(progress_, ImVec2(-1, 0));
+  }
+
+  if (!status_message_.empty()) {
+    bool is_error = !last_error_.empty();
+    ImVec4 color = is_error ? ImVec4(0.9f, 0.3f, 0.3f, 1.0f)
+                            : ImVec4(0.3f, 0.9f, 0.3f, 1.0f);
+    ImGui::TextColored(color, "%s", status_message_.c_str());
+  }
+
+  if (!last_error_.empty()) {
+    ImGui::TextWrapped("Error: %s", last_error_.c_str());
+  }
+
+  ImGui::Spacing();
+}
+
+void DeploymentPanel::RenderQuickActions(const ModelMetadata& model) {
+  // Check current state
+  bool is_local = model.locations.count("mac") > 0;
+  bool has_gguf = false;
+  for (const auto& fmt : model.formats) {
+    if (fmt == "gguf") {
+      has_gguf = true;
+      break;
+    }
+  }
+  bool in_ollama = false;
+  for (const auto& backend : model.deployed_backends) {
+    if (backend == "ollama") {
+      in_ollama = true;
+      break;
+    }
+  }
+
+  // Quick action buttons
+  ImGui::Text("Quick Actions:");
+
+  // Pull button
+  ImGui::BeginDisabled(is_busy_ || is_local);
+  if (ImGui::Button("Pull to Mac")) {
+    is_busy_ = true;
+    current_operation_ = "Pulling model...";
+    progress_ = 0.1f;
+    status_message_.clear();
+    last_error_.clear();
+
+    // Execute pull
+    last_result_ = actions_.PullModel(model.model_id);
+    is_busy_ = false;
+
+    if (last_result_.status == ActionStatus::kCompleted) {
+      status_message_ = "Model pulled successfully";
+    } else {
+      status_message_ = "Pull failed";
+      last_error_ = last_result_.error;
+    }
+  }
+  ImGui::EndDisabled();
+  ImGui::SameLine();
+  if (!is_local) {
+    ImGui::TextDisabled("(not local)");
+  } else {
+    ImGui::TextColored(ImVec4(0.3f, 0.8f, 0.3f, 1.0f), "(local)");
+  }
+
+  ImGui::SameLine(0, 20);
+
+  // Convert button
+  ImGui::BeginDisabled(is_busy_ || !is_local || has_gguf);
+  if (ImGui::Button("Convert to GGUF")) {
+    is_busy_ = true;
+    current_operation_ = "Converting to GGUF...";
+    progress_ = 0.2f;
+    status_message_.clear();
+    last_error_.clear();
+
+    auto quant_opts = GetQuantizationOptions();
+    std::string quant = quant_opts[selected_quantization_].name;
+
+    last_result_ = actions_.ConvertToGGUF(model.model_id, quant);
+    is_busy_ = false;
+
+    if (last_result_.status == ActionStatus::kCompleted) {
+      status_message_ = "Conversion complete";
+    } else {
+      status_message_ = "Conversion failed";
+      last_error_ = last_result_.error;
+    }
+  }
+  ImGui::EndDisabled();
+  ImGui::SameLine();
+  if (has_gguf) {
+    ImGui::TextColored(ImVec4(0.3f, 0.8f, 0.3f, 1.0f), "(has GGUF)");
+  }
+
+  ImGui::SameLine(0, 20);
+
+  // Deploy button
+  ImGui::BeginDisabled(is_busy_ || in_ollama);
+  if (ImGui::Button("Deploy to Ollama")) {
+    is_busy_ = true;
+    current_operation_ = "Deploying to Ollama...";
+    progress_ = 0.3f;
+    status_message_.clear();
+    last_error_.clear();
+
+    std::string name(ollama_name_buffer_.data());
+    auto quant_opts = GetQuantizationOptions();
+    std::string quant = quant_opts[selected_quantization_].name;
+
+    last_result_ = actions_.DeployToOllama(model.model_id, name, quant);
+    is_busy_ = false;
+
+    if (last_result_.status == ActionStatus::kCompleted) {
+      status_message_ = "Deployed to Ollama";
+    } else {
+      status_message_ = "Deployment failed";
+      last_error_ = last_result_.error;
+    }
+  }
+  ImGui::EndDisabled();
+  ImGui::SameLine();
+  if (in_ollama) {
+    ImGui::TextColored(ImVec4(0.3f, 0.8f, 0.3f, 1.0f), "(in Ollama)");
+  }
+}
+
+void DeploymentPanel::RenderOllamaDeployment(const ModelMetadata& model) {
+  ImGui::Indent();
+
+  // Ollama name input
+  ImGui::Text("Ollama Model Name:");
+  ImGui::SameLine();
+  ImGui::SetNextItemWidth(200);
+  ImGui::InputTextWithHint("##OllamaName", model.model_id.c_str(),
+                           ollama_name_buffer_.data(),
+                           ollama_name_buffer_.size());
+
+  // Quantization selection
+  ImGui::Text("Quantization:");
+  auto quant_opts = GetQuantizationOptions();
+  for (int i = 0; i < static_cast<int>(quant_opts.size()); ++i) {
+    ImGui::SameLine();
+    if (ImGui::RadioButton(quant_opts[i].name.c_str(),
+                           selected_quantization_ == i)) {
+      selected_quantization_ = i;
+    }
+  }
+
+  // Current quantization info
+  const auto& selected_quant = quant_opts[selected_quantization_];
+  ImGui::TextDisabled("%s (%.0f%% of F16 size)",
+                      selected_quant.description.c_str(),
+                      selected_quant.size_ratio * 100.0f);
+
+  // Status indicators
+  ImGui::Spacing();
+  bool ollama_running = actions_.IsOllamaRunning();
+  bool llama_available = actions_.IsLlamaCppAvailable();
+
+  ImGui::TextDisabled("Prerequisites:");
+  ImGui::BulletText("Ollama: %s",
+                    ollama_running ? "Running" : "Not running");
+  if (!ollama_running) {
+    ImGui::SameLine();
+    ImGui::TextColored(ImVec4(0.9f, 0.6f, 0.2f, 1.0f), "(run: ollama serve)");
+  }
+
+  ImGui::BulletText("llama.cpp: %s",
+                    llama_available ? "Available" : "Not found");
+
+  ImGui::Unindent();
+}
+
+void DeploymentPanel::RenderConversionOptions(const ModelMetadata& model) {
+  ImGui::Indent();
+
+  // Current formats
+  ImGui::Text("Available formats:");
+  for (const auto& fmt : model.formats) {
+    ImGui::SameLine();
+    ImGui::TextColored(ImVec4(0.4f, 0.7f, 0.9f, 1.0f), "[%s]", fmt.c_str());
+  }
+
+  if (model.formats.empty()) {
+    ImGui::SameLine();
+    ImGui::TextDisabled("(none)");
+  }
+
+  ImGui::Spacing();
+
+  // Conversion buttons
+  ImGui::BeginDisabled(is_busy_);
+  if (ImGui::Button("Convert to GGUF (Q4_K_M)")) {
+    is_busy_ = true;
+    current_operation_ = "Converting to GGUF Q4_K_M...";
+    last_result_ = actions_.ConvertToGGUF(model.model_id, "Q4_K_M");
+    is_busy_ = false;
+    status_message_ = last_result_.status == ActionStatus::kCompleted
+                          ? "Conversion complete"
+                          : "Conversion failed";
+    if (last_result_.status != ActionStatus::kCompleted) {
+      last_error_ = last_result_.error;
+    }
+  }
+  ImGui::SameLine();
+  if (ImGui::Button("Convert to GGUF (Q5_K_M)")) {
+    is_busy_ = true;
+    current_operation_ = "Converting to GGUF Q5_K_M...";
+    last_result_ = actions_.ConvertToGGUF(model.model_id, "Q5_K_M");
+    is_busy_ = false;
+    status_message_ = last_result_.status == ActionStatus::kCompleted
+                          ? "Conversion complete"
+                          : "Conversion failed";
+    if (last_result_.status != ActionStatus::kCompleted) {
+      last_error_ = last_result_.error;
+    }
+  }
+  ImGui::EndDisabled();
+
+  ImGui::Unindent();
+}
+
+void DeploymentPanel::RenderTestPrompt(const ModelMetadata& model) {
+  ImGui::Indent();
+
+  // Check if model is deployed
+  bool can_test = false;
+  std::string deployed_to;
+  for (const auto& backend : model.deployed_backends) {
+    if (backend == "ollama") {
+      can_test = true;
+      deployed_to = "ollama";
+      break;
+    }
+  }
+
+  if (!can_test) {
+    ImGui::TextDisabled("Deploy model to a backend first to test.");
+    ImGui::Unindent();
+    return;
+  }
+
+  // Test prompt input
+  ImGui::Text("Test Prompt:");
+  ImGui::SetNextItemWidth(-1);
+  ImGui::InputTextMultiline("##TestPrompt", test_prompt_buffer_.data(),
+                            test_prompt_buffer_.size(), ImVec2(0, 60));
+
+  // Run test button
+  ImGui::BeginDisabled(is_busy_);
+  if (ImGui::Button("Run Test")) {
+    is_busy_ = true;
+    current_operation_ = "Testing model...";
+    status_message_.clear();
+    last_error_.clear();
+    test_output_.clear();
+
+    last_result_ = actions_.TestModel(model.model_id, DeploymentBackend::kOllama,
+                                       std::string(test_prompt_buffer_.data()));
+    is_busy_ = false;
+
+    if (last_result_.status == ActionStatus::kCompleted) {
+      status_message_ = "Test completed";
+      test_output_ = last_result_.output;
+    } else {
+      status_message_ = "Test failed";
+      last_error_ = last_result_.error;
+    }
+  }
+  ImGui::EndDisabled();
+
+  // Test output
+  if (!test_output_.empty()) {
+    ImGui::Spacing();
+    ImGui::Text("Response:");
+    ImGui::BeginChild("TestOutput", ImVec2(0, 100), true);
+    ImGui::TextWrapped("%s", test_output_.c_str());
+    ImGui::EndChild();
+  }
+
+  ImGui::Unindent();
+}
+
+void RenderDeploymentPanelWindow(DeploymentPanel& panel,
+                                  const ModelMetadata* model,
+                                  bool* open) {
+  if (!open || !*open) return;
+
+  ImGui::SetNextWindowSize(ImVec2(500, 400), ImGuiCond_FirstUseEver);
+
+  if (!ImGui::Begin("Deployment", open)) {
+    ImGui::End();
+    return;
+  }
+
+  panel.Render(model);
+
+  ImGui::End();
+}
+
+}  // namespace ui
+}  // namespace studio
+}  // namespace afs

apps/studio/src/ui/components/deployment_panel.h

@@ -0,0 +1,55 @@
+#pragma once
+
+#include "core/deployment_actions.h"
+#include "core/registry_reader.h"
+
+#include <array>
+#include <string>
+
+namespace afs {
+namespace studio {
+namespace ui {
+
+// Deployment panel for model actions
+class DeploymentPanel {
+ public:
+  DeploymentPanel();
+
+  // Render the panel (typically shown when a model is selected)
+  void Render(const ModelMetadata* selected_model);
+
+  // Check if an operation is in progress
+  bool IsBusy() const { return is_busy_; }
+
+ private:
+  void RenderDeploymentStatus();
+  void RenderQuickActions(const ModelMetadata& model);
+  void RenderOllamaDeployment(const ModelMetadata& model);
+  void RenderConversionOptions(const ModelMetadata& model);
+  void RenderTestPrompt(const ModelMetadata& model);
+
+  DeploymentActions actions_;
+
+  // UI State
+  bool is_busy_ = false;
+  std::string current_operation_;
+  float progress_ = 0.0f;
+  std::string status_message_;
+  std::string last_error_;
+  ActionResult last_result_;
+
+  // Deployment options
+  int selected_quantization_ = 1;  // Default to Q4_K_M
+  std::array<char, 64> ollama_name_buffer_{};
+  std::array<char, 512> test_prompt_buffer_{};
+  std::string test_output_;
+};
+
+// Render as standalone window
+void RenderDeploymentPanelWindow(DeploymentPanel& panel,
+                                  const ModelMetadata* model,
+                                  bool* open);
+
+}  // namespace ui
+}  // namespace studio
+}  // namespace afs

apps/studio/src/ui/components/graph_browser.cc

@@ -0,0 +1,256 @@
+#include "graph_browser.h"
+#include "../core.h"
+#include "../../icons.h"
+#include <imgui.h>
+#include <algorithm>
+
+namespace afs::viz::ui {
+
+GraphBrowser::GraphBrowser() {
+    InitializeGraphRegistry();
+}
+
+void GraphBrowser::InitializeGraphRegistry() {
+    all_graphs_ = {
+        // Training Category
+        {PlotKind::TrainingLoss, "Training Loss", "Loss curves over training steps", GraphCategory::Training, true, true, true, true},
+        {PlotKind::LossVsSamples, "Loss vs Samples", "Training loss progression by sample count", GraphCategory::Training, false, true, true, false},
+        
+        // Quality Category
+        {PlotKind::QualityTrends, "Quality Trends", "Data quality trends by domain", GraphCategory::Quality, true, true, true, true},
+        {PlotKind::QualityDirection, "Quality Direction", "Quality improvement/degradation tracking", GraphCategory::Quality, false, true, true, false},
+        {PlotKind::EmbeddingQuality, "Embedding Quality", "Embedding space quality metrics", GraphCategory::Quality, false, true, true, true},
+        {PlotKind::Effectiveness, "Effectiveness", "Generator effectiveness analysis", GraphCategory::Quality, false, true, true, false},
+        
+        // System Category
+        {PlotKind::AgentUtilization, "Agent Utilization", "Agent resource usage and activity", GraphCategory::System, false, false, true, true},
+        {PlotKind::AgentThroughput, "Agent Throughput", "Agent task completion rates", GraphCategory::System, false, false, true, true},
+        {PlotKind::MissionProgress, "Mission Progress", "Mission completion tracking", GraphCategory::System, false, false, false, false},
+        {PlotKind::MissionQueue, "Mission Queue", "Mission queue depth over time", GraphCategory::System, false, false, false, false},
+        {PlotKind::MountsStatus, "Mounts Status", "Filesystem mount status", GraphCategory::System, false, false, true, false},
+        
+        // Coverage Category
+        {PlotKind::CoverageDensity, "Coverage Density", "Data coverage density heatmap", GraphCategory::Coverage, false, true, true, true},
+        {PlotKind::DomainCoverage, "Domain Coverage", "Per-domain coverage analysis", GraphCategory::Coverage, false, true, true, true},
+        
+        // Embedding Category
+        {PlotKind::EmbeddingDensity, "Embedding Density", "Embedding space density visualization", GraphCategory::Embedding, false, true, true, true},
+        {PlotKind::LatentSpace, "Latent Space", "2D latent space projection", GraphCategory::Embedding, false, true, true, true},
+        {PlotKind::KnowledgeGraph, "Knowledge Graph", "Knowledge concept relationships", GraphCategory::Embedding, false, false, false, false},
+        
+        // Optimization Category
+        {PlotKind::GeneratorEfficiency, "Generator Efficiency", "Generator performance metrics", GraphCategory::Optimization, true, true, true, true},
+        {PlotKind::GeneratorMix, "Generator Mix", "Generator usage distribution", GraphCategory::Optimization, false, true, true, false},
+        {PlotKind::Rejections, "Rejections", "Sample rejection analysis", GraphCategory::Optimization, false, true, true, true},
+        {PlotKind::Thresholds, "Threshold Optimization", "Quality threshold optimization curves", GraphCategory::Optimization, false, true, true, false},
+        {PlotKind::EvalMetrics, "Eval Metrics", "Evaluation metric comparisons", GraphCategory::Optimization, true, true, true, false},
+    };
+}
+
+const char* GraphBrowser::GetCategoryName(GraphCategory category) {
+    switch (category) {
+        case GraphCategory::Training: return "Training";
+        case GraphCategory::Quality: return "Quality";
+        case GraphCategory::System: return "System";
+        case GraphCategory::Coverage: return "Coverage";
+        case GraphCategory::Embedding: return "Embedding";
+        case GraphCategory::Optimization: return "Optimization";
+        case GraphCategory::All: return "All Graphs";
+        default: return "Unknown";
+    }
+}
+
+std::vector<GraphInfo> GraphBrowser::GetFilteredGraphs(GraphCategory category, const std::string& search) const {
+    std::vector<GraphInfo> filtered;
+    
+    for (const auto& graph : all_graphs_) {
+        // Category filter
+        if (category != GraphCategory::All && graph.category != category) {
+            continue;
+        }
+        
+        // Search filter
+        if (!search.empty()) {
+            std::string lower_name = graph.name;
+            std::string lower_search = search;
+            std::transform(lower_name.begin(), lower_name.end(), lower_name.begin(), ::tolower);
+            std::transform(lower_search.begin(), lower_search.end(), lower_search.begin(), ::tolower);
+            
+            if (lower_name.find(lower_search) == std::string::npos) {
+                continue;
+            }
+        }
+        
+        filtered.push_back(graph);
+    }
+    
+    return filtered;
+}
+
+const GraphInfo* GraphBrowser::GetGraphInfo(PlotKind kind) const {
+    for (const auto& graph : all_graphs_) {
+        if (graph.kind == kind) {
+            return &graph;
+        }
+    }
+    return nullptr;
+}
+
+void GraphBrowser::Render(AppState& state) {
+    ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(8, 8));
+    
+    // Search bar
+    ImGui::SetNextItemWidth(-FLT_MIN);
+    char search_buf[128];
+    strncpy(search_buf, state.graph_search_query.c_str(), sizeof(search_buf) - 1);
+    search_buf[sizeof(search_buf) - 1] = '\0';
+    
+    if (ImGui::InputTextWithHint("##GraphSearch", ICON_MD_SEARCH " Search graphs...", 
+                                  search_buf, sizeof(search_buf))) {
+        state.graph_search_query = search_buf;
+    }
+    
+    ImGui::Spacing();
+    ImGui::Separator();
+    ImGui::Spacing();
+    
+    // Category filter tabs
+    if (ImGui::BeginTabBar("GraphCategories", ImGuiTabBarFlags_FittingPolicyScroll)) {
+        const GraphCategory categories[] = {
+            GraphCategory::All, GraphCategory::Training, GraphCategory::Quality,
+            GraphCategory::System, GraphCategory::Coverage, GraphCategory::Embedding,
+            GraphCategory::Optimization
+        };
+        
+        for (auto cat : categories) {
+            if (ImGui::BeginTabItem(GetCategoryName(cat))) {
+                state.browser_filter = cat;
+                ImGui::EndTabItem();
+            }
+        }
+        ImGui::EndTabBar();
+    }
+    
+    ImGui::Spacing();
+    
+    // Bookmarks section
+    if (!state.graph_bookmarks.empty()) {
+        if (ImGui::CollapsingHeader(ICON_MD_BOOKMARK " Bookmarks", ImGuiTreeNodeFlags_DefaultOpen)) {
+            for (auto kind : state.graph_bookmarks) {
+                const GraphInfo* info = GetGraphInfo(kind);
+                if (info) {
+                    RenderGraphItem(*info, state);
+                }
+            }
+        }
+        ImGui::Spacing();
+    }
+    
+    // Recent graphs
+    if (!state.graph_history.empty()) {
+        if (ImGui::CollapsingHeader(ICON_MD_ACCESS_TIME " Recent", ImGuiTreeNodeFlags_DefaultOpen)) {
+            // Show last 5 unique graphs
+            std::vector<PlotKind> recent_unique;
+            for (auto it = state.graph_history.rbegin(); 
+                 it != state.graph_history.rend() && recent_unique.size() < 5; ++it) {
+                if (std::find(recent_unique.begin(), recent_unique.end(), *it) == recent_unique.end()) {
+                    recent_unique.push_back(*it);
+                }
+            }
+            
+            for (auto kind : recent_unique) {
+                const GraphInfo* info = GetGraphInfo(kind);
+                if (info) {
+                    RenderGraphItem(*info, state);
+                }
+            }
+        }
+        ImGui::Spacing();
+    }
+    
+    // All graphs (filtered)
+    ImGui::Separator();
+    ImGui::Spacing();
+    
+    auto filtered = GetFilteredGraphs(state.browser_filter, state.graph_search_query);
+    
+    if (filtered.empty()) {
+        ImGui::TextDisabled("No graphs found");
+    } else {
+        ImGui::BeginChild("GraphList", ImVec2(0, 0), false);
+        for (const auto& graph : filtered) {
+            RenderGraphItem(graph, state);
+        }
+        ImGui::EndChild();
+    }
+    
+    ImGui::PopStyleVar();
+}
+
+void GraphBrowser::RenderGraphItem(const GraphInfo& info, AppState& state) {
+    bool is_active = state.active_graph == info.kind;
+    bool is_bookmarked = std::find(state.graph_bookmarks.begin(), 
+                                    state.graph_bookmarks.end(), 
+                                    info.kind) != state.graph_bookmarks.end();
+    
+    ImGui::PushID(static_cast<int>(info.kind));
+    
+    if (is_active) {
+        ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(0.26f, 0.59f, 0.98f, 0.40f));
+        ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4(0.26f, 0.59f, 0.98f, 0.60f));
+    }
+    
+    if (ImGui::Button(info.name.c_str(), ImVec2(-FLT_MIN, 0))) {
+        // Navigate to this graph
+        if (state.active_graph != info.kind) {
+            // Add to history (truncate forward history if we're not at the end)
+            if (state.graph_history_index >= 0 && 
+                state.graph_history_index < static_cast<int>(state.graph_history.size()) - 1) {
+                state.graph_history.erase(
+                    state.graph_history.begin() + state.graph_history_index + 1,
+                    state.graph_history.end()
+                );
+            }
+            
+            state.graph_history.push_back(info.kind);
+            state.graph_history_index = static_cast<int>(state.graph_history.size()) - 1;
+            state.active_graph = info.kind;
+        }
+    }
+    
+    if (is_active) {
+        ImGui::PopStyleColor(2);
+    }
+    
+    if (ImGui::IsItemHovered()) {
+        ImGui::BeginTooltip();
+        ImGui::Text("%s", info.description.c_str());
+        ImGui::TextDisabled("Category: %s", GetCategoryName(info.category));
+        if (info.supports_comparison) {
+            ImGui::TextDisabled(ICON_MD_COMPARE " Supports comparison");
+        }
+        ImGui::EndTooltip();
+    }
+    
+    // Context menu for bookmarking
+    if (ImGui::BeginPopupContextItem()) {
+        if (is_bookmarked) {
+            if (ImGui::MenuItem(ICON_MD_BOOKMARK " Remove Bookmark")) {
+                state.graph_bookmarks.erase(
+                    std::remove(state.graph_bookmarks.begin(), 
+                               state.graph_bookmarks.end(), info.kind),
+                    state.graph_bookmarks.end()
+                );
+            }
+        } else {
+            if (ImGui::MenuItem(ICON_MD_BOOKMARK_BORDER " Add Bookmark")) {
+                state.graph_bookmarks.push_back(info.kind);
+            }
+        }
+        ImGui::EndPopup();
+    }
+    
+    ImGui::PopID();
+}
+
+} // namespace afs::viz::ui

apps/studio/src/ui/components/graph_browser.h

@@ -0,0 +1,48 @@
+#pragma once
+
+#include <string>
+#include <vector>
+#include "../../models/state.h"
+
+namespace afs::viz::ui {
+
+// Graph metadata for browser display
+struct GraphInfo {
+    PlotKind kind;
+    std::string name;
+    std::string description;
+    GraphCategory category;
+    bool supports_comparison;
+    bool needs_filter_panel;
+    bool needs_data_quality_panel;
+    bool needs_inspector_panel;
+};
+
+class GraphBrowser {
+public:
+    GraphBrowser();
+    
+    // Render the graph browser sidebar
+    void Render(AppState& state);
+    
+    // Get all available graphs
+    const std::vector<GraphInfo>& GetAllGraphs() const { return all_graphs_; }
+    
+    // Get filtered graphs based on category and search
+    std::vector<GraphInfo> GetFilteredGraphs(GraphCategory category, const std::string& search) const;
+    
+    // Get graph info by kind
+    const GraphInfo* GetGraphInfo(PlotKind kind) const;
+    
+    // Get category name
+    static const char* GetCategoryName(GraphCategory category);
+    
+private:
+    std::vector<GraphInfo> all_graphs_;
+    
+    void RenderCategorySection(const char* title, GraphCategory category, AppState& state);
+    void RenderGraphItem(const GraphInfo& info, AppState& state);
+    void InitializeGraphRegistry();
+};
+
+} // namespace afs::viz::ui

apps/studio/src/ui/components/graph_navigator.cc

@@ -0,0 +1,153 @@
+#include "graph_navigator.h"
+#include "graph_browser.h"
+#include "../core.h"
+#include "../../icons.h"
+#include <imgui.h>
+#include <algorithm>
+
+namespace afs::viz::ui {
+
+bool GraphNavigator::CanNavigateBack(const AppState& state) const {
+    return state.graph_history_index > 0;
+}
+
+bool GraphNavigator::CanNavigateForward(const AppState& state) const {
+    return state.graph_history_index >= 0 && 
+           state.graph_history_index < static_cast<int>(state.graph_history.size()) - 1;
+}
+
+bool GraphNavigator::IsBookmarked(const AppState& state, PlotKind kind) const {
+    return std::find(state.graph_bookmarks.begin(), 
+                    state.graph_bookmarks.end(), kind) != state.graph_bookmarks.end();
+}
+
+void GraphNavigator::NavigateBack(AppState& state) {
+    if (CanNavigateBack(state)) {
+        state.graph_history_index--;
+        state.active_graph = state.graph_history[state.graph_history_index];
+    }
+}
+
+void GraphNavigator::NavigateForward(AppState& state) {
+    if (CanNavigateForward(state)) {
+        state.graph_history_index++;
+        state.active_graph = state.graph_history[state.graph_history_index];
+    }
+}
+
+void GraphNavigator::NavigateToGraph(AppState& state, PlotKind kind) {
+    if (state.active_graph == kind) return;
+    
+    // Truncate forward history
+    if (state.graph_history_index >= 0 && 
+        state.graph_history_index < static_cast<int>(state.graph_history.size()) - 1) {
+        state.graph_history.erase(
+            state.graph_history.begin() + state.graph_history_index + 1,
+            state.graph_history.end()
+        );
+    }
+    
+    state.graph_history.push_back(kind);
+    state.graph_history_index = static_cast<int>(state.graph_history.size()) - 1;
+    state.active_graph = kind;
+}
+
+void GraphNavigator::ToggleBookmark(AppState& state, PlotKind kind) {
+    auto it = std::find(state.graph_bookmarks.begin(), state.graph_bookmarks.end(), kind);
+    if (it != state.graph_bookmarks.end()) {
+        state.graph_bookmarks.erase(it);
+    } else {
+        state.graph_bookmarks.push_back(kind);
+    }
+}
+
+void GraphNavigator::RenderToolbar(AppState& state, const GraphBrowser& browser) {
+    // Navigation buttons
+    ImGui::BeginDisabled(!CanNavigateBack(state));
+    if (ImGui::Button(ICON_MD_ARROW_BACK)) {
+        NavigateBack(state);
+    }
+    ImGui::EndDisabled();
+    
+    if (ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenDisabled)) {
+        ImGui::SetTooltip("Back (Alt+Left)");
+    }
+    
+    ImGui::SameLine();
+    
+    ImGui::BeginDisabled(!CanNavigateForward(state));
+    if (ImGui::Button(ICON_MD_ARROW_FORWARD)) {
+        NavigateForward(state);
+    }
+    ImGui::EndDisabled();
+    
+    if (ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenDisabled)) {
+        ImGui::SetTooltip("Forward (Alt+Right)");
+    }
+    
+    ImGui::SameLine();
+    ImGui::SameLine();
+    ImGui::Separator();
+    ImGui::SameLine();
+    
+    // Bookmark button (disabled if no graph selected)
+    ImGui::BeginDisabled(state.active_graph == PlotKind::None);
+    bool is_bookmarked = IsBookmarked(state, state.active_graph);
+    if (is_bookmarked) {
+        ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(1.0f, 0.8f, 0.2f, 1.0f));
+    }
+    
+    if (ImGui::Button(is_bookmarked ? ICON_MD_BOOKMARK : ICON_MD_BOOKMARK_BORDER)) {
+        ToggleBookmark(state, state.active_graph);
+    }
+    
+    if (is_bookmarked) {
+        ImGui::PopStyleColor();
+    }
+    ImGui::EndDisabled();
+    
+    if (ImGui::IsItemHovered()) {
+        ImGui::SetTooltip(is_bookmarked ? "Remove Bookmark (Ctrl+D)" : "Add Bookmark (Ctrl+D)");
+    }
+    
+    ImGui::SameLine();
+    ImGui::SameLine();
+    ImGui::Separator();
+    ImGui::SameLine();
+    
+    // Breadcrumbs
+    RenderBreadcrumbs(state, browser);
+}
+
+void GraphNavigator::RenderBreadcrumbs(AppState& state, const GraphBrowser& browser) {
+    if (state.active_graph == PlotKind::None) {
+        ImGui::TextDisabled("No graph selected");
+        return;
+    }
+    
+    const GraphInfo* info = browser.GetGraphInfo(state.active_graph);
+    
+    if (!info) {
+        ImGui::Text("Unknown Graph");
+        return;
+    }
+    
+    // Category > Graph Name
+    ImGui::Text(ICON_MD_SHOW_CHART);
+    ImGui::SameLine();
+    ImGui::TextDisabled("%s", GraphBrowser::GetCategoryName(info->category));
+    ImGui::SameLine();
+    ImGui::Text(">");
+    ImGui::SameLine();
+    ImGui::Text("%s", info->name.c_str());
+    
+    // Show history depth
+    if (state.graph_history.size() > 0) {
+        ImGui::SameLine();
+        ImGui::TextDisabled("(%d / %d)", 
+                           state.graph_history_index + 1, 
+                           static_cast<int>(state.graph_history.size()));
+    }
+}
+
+} // namespace afs::viz::ui

apps/studio/src/ui/components/graph_navigator.h

@@ -0,0 +1,32 @@
+#pragma once
+
+#include <string>
+#include "../../models/state.h"
+
+namespace afs::viz::ui {
+
+class GraphBrowser;  // Forward declaration
+
+class GraphNavigator {
+public:
+    GraphNavigator() = default;
+    
+    // Render navigation toolbar (breadcrumbs, back/forward)
+    void RenderToolbar(AppState& state, const GraphBrowser& browser);
+    
+    // Navigation actions
+    void NavigateBack(AppState& state);
+    void NavigateForward(AppState& state);
+    void NavigateToGraph(AppState& state, PlotKind kind);
+    void ToggleBookmark(AppState& state, PlotKind kind);
+    
+    // Check navigation state
+    bool CanNavigateBack(const AppState& state) const;
+    bool CanNavigateForward(const AppState& state) const;
+    bool IsBookmarked(const AppState& state, PlotKind kind) const;
+    
+private:
+    void RenderBreadcrumbs(AppState& state, const GraphBrowser& browser);
+};
+
+} // namespace afs::viz::ui

apps/studio/src/ui/components/metrics.cc

@@ -0,0 +1,185 @@
+#include "metrics.h"
+#include "../core.h"
+#include "../../icons.h"
+#include <cmath>
+#include <algorithm>
+#include <GLFW/glfw3.h> // For glfwGetTime if needed, but AppState has last_refresh_time
+
+namespace afs {
+namespace viz {
+namespace ui {
+
+void RenderMetricCards(AppState& state, const DataLoader& loader, ImFont* font_ui, ImFont* font_header) {
+  const auto& trends = loader.GetQualityTrends();
+
+  float total_success = 0.0f;
+  for (const auto& agent : state.agents) {
+      total_success += agent.success_rate;
+  }
+  if (!state.agents.empty())
+      total_success /= static_cast<float>(state.agents.size());
+
+  float avg_quality = 0.0f;
+  if (!trends.empty()) {
+    for (const auto& t : trends)
+      avg_quality += t.mean;
+    avg_quality /= static_cast<float>(trends.size());
+  }
+
+  char q_buf[32], a_buf[32];
+  snprintf(q_buf, sizeof(q_buf), "%d%%", static_cast<int>(avg_quality * 100));
+  snprintf(a_buf, sizeof(a_buf), "%d%%", static_cast<int>(total_success * 100));
+
+  MetricCard cards[] = {
+      {ICON_MD_INSIGHTS "  Overall Quality", q_buf, "System Health",
+       GetThemeColor(ImGuiCol_PlotLines, state.current_theme), true},
+      {ICON_MD_SPEED "  Swarm Velocity", "1.2k/s", "+12% vs last run",
+       ImVec4(0.4f, 1.0f, 0.6f, 1.0f), true},
+      {ICON_MD_AUTO_FIX_HIGH "  Efficiency", a_buf, "Mean Success Rate", ImVec4(1.0f, 0.4f, 0.4f, 1.0f),
+       total_success > 0.85f}};
+
+  float card_w = (ImGui::GetContentRegionAvail().x - 16) / 3.0f;
+  
+  for (int i = 0; i < 3; ++i) {
+    ImGui::PushID(i);
+    ImGui::BeginChild("Card", ImVec2(card_w, 100), true, ImGuiWindowFlags_NoScrollbar);
+    
+    // Label
+    if (font_ui) ImGui::PushFont(font_ui);
+    ImGui::TextDisabled("%s", cards[i].label.c_str());
+    if (font_ui) ImGui::PopFont();
+    
+    // Value
+    if (font_header) ImGui::PushFont(font_header);
+    ImGui::TextColored(cards[i].color, "%s", cards[i].value.c_str());
+    if (font_header) ImGui::PopFont();
+    
+    // Subtext
+    ImGui::Spacing();
+    ImGui::TextDisabled("%s", cards[i].sub_text.c_str());
+    
+    // Decorative Pulse (Bottom edge)
+    if (state.use_pulse_animations) {
+        float p = (1.0f + std::sin(state.pulse_timer * 2.0f + i)) * 0.5f;
+        ImDrawList* draw = ImGui::GetWindowDrawList();
+        ImVec2 p_min = ImGui::GetItemRectMin(); // Note: Not used correctly in original, but let's keep pattern
+        ImVec2 p_max = ImGui::GetWindowPos();
+        p_max.x += ImGui::GetWindowSize().x;
+        p_max.y += ImGui::GetWindowSize().y;
+        draw->AddRectFilled(ImVec2(p_max.x - 40 * p, p_max.y - 2), p_max, ImColor(cards[i].color));
+    }
+
+    ImGui::EndChild();
+    if (i < 2) ImGui::SameLine();
+    ImGui::PopID();
+  }
+}
+
+void RenderSummaryRow(AppState& state, const DataLoader& loader, ImFont* font_ui, ImFont* font_header) {
+  RenderMetricCards(state, loader, font_ui, font_header);
+  
+  ImGui::Spacing();
+  
+  // Swarm Topology Overview
+  ImGui::BeginChild("SwarmTopology", ImVec2(0, 120), true);
+  if (font_header) ImGui::PushFont(font_header);
+  ImGui::Text(ICON_MD_HUB " SWARM TOPOLOGY");
+  if (font_header) ImGui::PopFont();
+  
+  ImGui::Separator();
+  
+  if (ImGui::BeginTable("Topology", 5, ImGuiTableFlags_SizingStretchProp | ImGuiTableFlags_NoSavedSettings)) {
+      ImGui::TableSetupColumn("Active Agents", ImGuiTableColumnFlags_WidthStretch);
+      ImGui::TableSetupColumn("Queue Depth", ImGuiTableColumnFlags_WidthStretch);
+      ImGui::TableSetupColumn("Mission Velocity", ImGuiTableColumnFlags_WidthStretch);
+      ImGui::TableSetupColumn("Avg. Success", ImGuiTableColumnFlags_WidthStretch);
+      ImGui::TableSetupColumn("Health", ImGuiTableColumnFlags_WidthStretch);
+      ImGui::TableHeadersRow();
+      
+      int active_count = 0;
+      float total_success = 0.0f;
+      int total_queue = 0;
+      for (const auto& a : state.agents) {
+          if (a.enabled) active_count++;
+          total_success += a.success_rate;
+          total_queue += a.queue_depth;
+      }
+      if (!state.agents.empty()) total_success /= (float)state.agents.size();
+      
+      ImGui::TableNextRow();
+      
+      // Column 0: Active Agents
+      ImGui::TableSetColumnIndex(0);
+      ImGui::TextColored(ImVec4(0.4f, 1.0f, 0.6f, 1.0f), "%d / %d", active_count, (int)state.agents.size());
+      
+      // Column 1: Queue Depth
+      ImGui::TableSetColumnIndex(1);
+      ImGui::Text("%d Tasks", total_queue);
+      
+      // Column 2: Mission Velocity
+      ImGui::TableSetColumnIndex(2);
+      float avg_progress = 0.0f;
+      for (const auto& m : state.missions) avg_progress += m.progress;
+      if (!state.missions.empty()) avg_progress /= (float)state.missions.size();
+      ImGui::ProgressBar(avg_progress, ImVec2(-1, 0), "");
+      
+      // Column 3: Success Rate
+      ImGui::TableSetColumnIndex(3);
+      ImGui::Text("%.1f%%", total_success * 100.0f);
+      
+      // Column 4: Health
+      ImGui::TableSetColumnIndex(4);
+      ImGui::TextColored(ImVec4(0.4f, 1.0f, 0.6f, 1.0f), ICON_MD_VERIFIED_USER " NOMINAL");
+      
+      ImGui::EndTable();
+  }
+  ImGui::EndChild();
+}
+
+void RenderStatusBar(AppState& state, const DataLoader& loader, const std::string& data_path) {
+  ImGui::Separator();
+  if (ImGui::BeginTable("StatusStrip", 2,
+                        ImGuiTableFlags_SizingStretchProp)) {
+    ImGui::TableNextColumn();
+    const auto& status = loader.GetLastStatus();
+    int sources_found = status.FoundCount();
+    int sources_ok = status.OkCount();
+    if (loader.HasData()) {
+      double seconds_since = std::max(0.0, glfwGetTime() - state.last_refresh_time);
+      if (status.error_count > 0) {
+        ImGui::Text(
+            "Sources: %d/%d ok  |  Generators: %zu  |  Regions: %zu  |  Runs: %zu  |  Errors: %d  |  Last refresh: %.0fs  |  F5 to refresh",
+            sources_ok,
+            sources_found,
+            loader.GetGeneratorStats().size(),
+            loader.GetEmbeddingRegions().size(),
+            loader.GetTrainingRuns().size(),
+            status.error_count,
+            seconds_since);
+      } else {
+        ImGui::Text(
+            "Sources: %d/%d ok  |  Generators: %zu  |  Regions: %zu  |  Runs: %zu  |  Last refresh: %.0fs  |  F5 to refresh",
+            sources_ok,
+            sources_found,
+            loader.GetGeneratorStats().size(),
+            loader.GetEmbeddingRegions().size(),
+            loader.GetTrainingRuns().size(),
+            seconds_since);
+      }
+    } else {
+      if (status.error_count > 0) {
+        ImGui::TextDisabled("No data loaded - %d error(s) on refresh", status.error_count);
+      } else {
+        ImGui::TextDisabled("No data loaded - Press F5 to refresh");
+      }
+    }
+
+    ImGui::TableNextColumn();
+    ImGui::Text("Data: %s", data_path.c_str());
+    ImGui::EndTable();
+  }
+}
+
+} // namespace ui
+} // namespace viz
+} // namespace afs

apps/studio/src/ui/components/metrics.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <imgui.h>
+#include <string>
+#include "../../models/state.h"
+#include "../../data_loader.h"
+
+namespace afs {
+namespace viz {
+namespace ui {
+
+void RenderMetricCards(AppState& state, const DataLoader& loader, ImFont* font_ui, ImFont* font_header);
+void RenderSummaryRow(AppState& state, const DataLoader& loader, ImFont* font_ui, ImFont* font_header);
+void RenderStatusBar(AppState& state, const DataLoader& loader, const std::string& data_path);
+
+} // namespace ui
+} // namespace viz
+} // namespace afs

apps/studio/src/ui/components/model_registry.cc

@@ -0,0 +1,418 @@
+#include "model_registry.h"
+#include "../../icons.h"
+
+#include <imgui.h>
+
+#include <algorithm>
+#include <cstring>
+
+namespace afs {
+namespace studio {
+namespace ui {
+
+// Define static members
+constexpr const char* ModelRegistryWidget::kRoleOptions[];
+constexpr const char* ModelRegistryWidget::kLocationOptions[];
+constexpr const char* ModelRegistryWidget::kBackendOptions[];
+
+ModelRegistryWidget::ModelRegistryWidget() {
+  Refresh();
+}
+
+void ModelRegistryWidget::Refresh() {
+  std::string error;
+  if (!registry_.Load(&error)) {
+    last_error_ = error;
+  } else {
+    last_error_.clear();
+  }
+  selected_model_index_ = -1;
+}
+
+const ModelMetadata* ModelRegistryWidget::GetSelectedModel() const {
+  const auto& models = registry_.GetModels();
+  if (selected_model_index_ >= 0 &&
+      selected_model_index_ < static_cast<int>(models.size())) {
+    return &models[selected_model_index_];
+  }
+  return nullptr;
+}
+
+void ModelRegistryWidget::Render() {
+  RenderToolbar();
+
+  // Main content with optional details panel
+  if (show_details_ && GetSelectedModel()) {
+    // Split view: list on left, details on right
+    float details_width = 350.0f;
+    float list_width = ImGui::GetContentRegionAvail().x - details_width - 10.0f;
+
+    ImGui::BeginChild("ModelList", ImVec2(list_width, 0), true);
+    RenderModelList();
+    ImGui::EndChild();
+
+    ImGui::SameLine();
+
+    ImGui::BeginChild("ModelDetails", ImVec2(details_width, 0), true);
+    RenderModelDetails();
+    ImGui::EndChild();
+  } else {
+    // Full width list
+    ImGui::BeginChild("ModelList", ImVec2(0, 0), true);
+    RenderModelList();
+    ImGui::EndChild();
+  }
+}
+
+void ModelRegistryWidget::RenderToolbar() {
+  // Refresh button
+  if (ImGui::Button("Refresh")) {
+    Refresh();
+  }
+  ImGui::SameLine();
+
+  // Filter text input
+  ImGui::SetNextItemWidth(200.0f);
+  ImGui::InputTextWithHint("##Filter", "Filter models...", filter_text_.data(),
+                           filter_text_.size());
+  ImGui::SameLine();
+
+  // Role filter
+  ImGui::SetNextItemWidth(100.0f);
+  ImGui::Combo("Role", &filter_role_, kRoleOptions, kRoleCount);
+  ImGui::SameLine();
+
+  // Location filter
+  ImGui::SetNextItemWidth(100.0f);
+  ImGui::Combo("Location", &filter_location_, kLocationOptions, kLocationCount);
+  ImGui::SameLine();
+
+  // Backend filter
+  ImGui::SetNextItemWidth(100.0f);
+  ImGui::Combo("Backend", &filter_backend_, kBackendOptions, kBackendCount);
+  ImGui::SameLine();
+
+  // Toggle details panel
+  ImGui::Checkbox("Details", &show_details_);
+  ImGui::SameLine();
+  ImGui::Checkbox("Deploy", &show_deployment_);
+
+  // Status line
+  const auto& models = registry_.GetModels();
+  ImGui::TextDisabled("%zu models registered", models.size());
+  if (!registry_.GetLastLoadTime().empty()) {
+    ImGui::SameLine();
+    ImGui::TextDisabled("| Updated: %s",
+                        registry_.GetLastLoadTime().c_str());
+  }
+
+  // Error display
+  if (!last_error_.empty()) {
+    ImGui::TextColored(ImVec4(0.9f, 0.4f, 0.4f, 1.0f), "Error: %s",
+                       last_error_.c_str());
+  }
+
+  ImGui::Separator();
+}
+
+void ModelRegistryWidget::RenderModelList() {
+  const auto& models = registry_.GetModels();
+  std::string filter_str(filter_text_.data());
+
+  // Convert filter to lowercase for case-insensitive match
+  std::transform(filter_str.begin(), filter_str.end(), filter_str.begin(),
+                 ::tolower);
+
+  int display_index = 0;
+  for (size_t i = 0; i < models.size(); ++i) {
+    const auto& model = models[i];
+
+    // Apply filters
+    if (filter_role_ > 0) {
+      if (model.role != kRoleOptions[filter_role_]) continue;
+    }
+
+    if (filter_location_ > 0) {
+      if (model.locations.count(kLocationOptions[filter_location_]) == 0)
+        continue;
+    }
+
+    if (filter_backend_ > 0) {
+      bool found = false;
+      for (const auto& backend : model.deployed_backends) {
+        if (backend == kBackendOptions[filter_backend_]) {
+          found = true;
+          break;
+        }
+      }
+      if (!found) continue;
+    }
+
+    // Apply text filter
+    if (!filter_str.empty()) {
+      std::string searchable = model.model_id + " " + model.display_name + " " +
+                               model.role + " " + model.base_model;
+      std::transform(searchable.begin(), searchable.end(), searchable.begin(),
+                     ::tolower);
+      if (searchable.find(filter_str) == std::string::npos) continue;
+    }
+
+    RenderModelCard(model, static_cast<int>(i));
+    ++display_index;
+  }
+
+  if (display_index == 0) {
+    ImGui::TextDisabled("No models match the current filters.");
+  }
+}
+
+void ModelRegistryWidget::RenderModelCard(const ModelMetadata& model,
+                                           int index) {
+  ImGui::PushID(index);
+
+  bool is_selected = (selected_model_index_ == index);
+
+  // Card styling
+  ImVec4 header_color =
+      is_selected ? ImVec4(0.2f, 0.4f, 0.8f, 1.0f) : ImVec4(0.15f, 0.15f, 0.15f, 1.0f);
+
+  ImGui::PushStyleColor(ImGuiCol_Header, header_color);
+  ImGui::PushStyleColor(ImGuiCol_HeaderHovered,
+                        ImVec4(0.25f, 0.45f, 0.75f, 1.0f));
+
+  // Collapsing header acts as the card
+  bool expanded = ImGui::CollapsingHeader(
+      model.display_name.empty() ? model.model_id.c_str()
+                                 : model.display_name.c_str(),
+      ImGuiTreeNodeFlags_DefaultOpen);
+
+  if (ImGui::IsItemClicked()) {
+    selected_model_index_ = index;
+  }
+
+  ImGui::PopStyleColor(2);
+
+  if (expanded) {
+    ImGui::Indent();
+
+    // Role badge
+    ImVec4 role_color(0.3f, 0.6f, 0.3f, 1.0f);
+    if (model.role == "asm")
+      role_color = ImVec4(0.8f, 0.5f, 0.2f, 1.0f);
+    else if (model.role == "debug")
+      role_color = ImVec4(0.6f, 0.3f, 0.6f, 1.0f);
+    else if (model.role == "yaze")
+      role_color = ImVec4(0.2f, 0.6f, 0.8f, 1.0f);
+
+    ImGui::TextColored(role_color, "[%s]", model.role.c_str());
+    ImGui::SameLine();
+    ImGui::TextDisabled("%s", model.base_model.c_str());
+
+    // Metrics & Badges
+    ImGui::BeginGroup();
+    if (model.final_loss.has_value()) {
+        ImGui::TextColored(ImVec4(0.4f, 1.0f, 0.6f, 1.0f), ICON_MD_TRENDING_DOWN " Loss: %.4f", model.final_loss.value());
+        ImGui::SameLine();
+    }
+    if (model.train_samples > 0) {
+        ImGui::TextDisabled(ICON_MD_FOLDER " %d samples", model.train_samples);
+    }
+    ImGui::EndGroup();
+
+    // Locations & Backends
+    if (!model.deployed_backends.empty()) {
+        ImGui::TextDisabled(ICON_MD_CLOUD_DONE " Deployed:");
+        for (const auto& backend : model.deployed_backends) {
+            ImGui::SameLine();
+            ImGui::TextColored(ImVec4(0.4f, 0.8f, 0.4f, 1.0f), "[%s]", backend.c_str());
+        }
+    } else {
+        ImGui::TextDisabled(ICON_MD_CLOUD_OFF " Not Deployed");
+    }
+
+    // Action Buttons - Premium styling
+    ImGui::Spacing();
+    ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(0.15f, 0.35f, 0.15f, 1.0f));
+    if (ImGui::Button(ICON_MD_ROCKET_LAUNCH " Deploy")) {
+        show_deployment_ = true;
+    }
+    ImGui::PopStyleColor();
+    
+    ImGui::SameLine();
+    ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(0.15f, 0.25f, 0.45f, 1.0f));
+    if (ImGui::Button(ICON_MD_PLAY_ARROW " Test")) {
+        show_details_ = true;
+        // Scroll or activate test section in details if needed
+    }
+    ImGui::PopStyleColor();
+
+    ImGui::SameLine();
+    if (ImGui::Button(ICON_MD_COMPARE " Compare")) {
+        // TODO: Add to comparison view
+    }
+
+    ImGui::Unindent();
+    ImGui::Spacing();
+    ImGui::Separator();
+  }
+
+  ImGui::PopID();
+}
+
+void ModelRegistryWidget::RenderModelDetails() {
+  const ModelMetadata* model = GetSelectedModel();
+  if (!model) {
+    ImGui::TextDisabled("Select a model to view details.");
+    return;
+  }
+
+  ImGui::Text("%s", model->display_name.c_str());
+  ImGui::Separator();
+
+  // Identity section
+  ImGui::TextDisabled("ID:");
+  ImGui::SameLine();
+  ImGui::TextWrapped("%s", model->model_id.c_str());
+
+  ImGui::TextDisabled("Version:");
+  ImGui::SameLine();
+  ImGui::Text("%s", model->version.c_str());
+
+  ImGui::TextDisabled("Base Model:");
+  ImGui::SameLine();
+  ImGui::TextWrapped("%s", model->base_model.c_str());
+
+  ImGui::Spacing();
+  ImGui::Separator();
+
+  // Training section
+  ImGui::Text("Training");
+  ImGui::TextDisabled("Role:");
+  ImGui::SameLine();
+  ImGui::Text("%s", model->role.c_str());
+
+  ImGui::TextDisabled("Date:");
+  ImGui::SameLine();
+  ImGui::Text("%s", model->training_date.c_str());
+
+  ImGui::TextDisabled("Duration:");
+  ImGui::SameLine();
+  ImGui::Text("%d minutes", model->training_duration_minutes);
+
+  ImGui::TextDisabled("Hardware:");
+  ImGui::SameLine();
+  ImGui::Text("%s (%s)", model->hardware.c_str(), model->device.c_str());
+
+  ImGui::Spacing();
+  ImGui::Separator();
+
+  // Dataset section
+  ImGui::Text("Dataset");
+  ImGui::TextDisabled("Name:");
+  ImGui::SameLine();
+  ImGui::Text("%s", model->dataset_name.c_str());
+
+  ImGui::TextDisabled("Samples:");
+  ImGui::SameLine();
+  ImGui::Text("%d train / %d val / %d test", model->train_samples,
+              model->val_samples, model->test_samples);
+
+  ImGui::TextDisabled("Acceptance:");
+  ImGui::SameLine();
+  ImGui::Text("%.1f%%", model->dataset_quality.acceptance_rate * 100.0f);
+
+  ImGui::Spacing();
+  ImGui::Separator();
+
+  // Metrics section
+  ImGui::Text("Metrics");
+  if (model->final_loss.has_value()) {
+    ImGui::TextDisabled("Final Loss:");
+    ImGui::SameLine();
+    ImGui::Text("%.4f", model->final_loss.value());
+  }
+  if (model->best_loss.has_value()) {
+    ImGui::TextDisabled("Best Loss:");
+    ImGui::SameLine();
+    ImGui::Text("%.4f", model->best_loss.value());
+  }
+  if (model->perplexity.has_value()) {
+    ImGui::TextDisabled("Perplexity:");
+    ImGui::SameLine();
+    ImGui::Text("%.2f", model->perplexity.value());
+  }
+
+  ImGui::Spacing();
+  ImGui::Separator();
+
+  // Locations section
+  ImGui::Text("Locations");
+  for (const auto& [location, path] : model->locations) {
+    bool is_primary = (location == model->primary_location);
+    ImGui::BulletText("%s%s", location.c_str(), is_primary ? " (primary)" : "");
+    ImGui::TextDisabled("    %s", path.c_str());
+  }
+
+  ImGui::Spacing();
+  ImGui::Separator();
+
+  // Deployment section
+  ImGui::Text("Deployment");
+  if (model->deployed_backends.empty()) {
+    ImGui::TextDisabled("Not deployed");
+  } else {
+    for (const auto& backend : model->deployed_backends) {
+      ImGui::BulletText("%s", backend.c_str());
+      if (backend == "ollama" && model->ollama_model_name.has_value()) {
+        ImGui::TextDisabled("    Name: %s",
+                            model->ollama_model_name.value().c_str());
+      }
+    }
+  }
+
+  // Notes
+  if (!model->notes.empty()) {
+    ImGui::Spacing();
+    ImGui::Separator();
+    ImGui::Text("Notes");
+    ImGui::TextWrapped("%s", model->notes.c_str());
+  }
+
+  // Tags
+  if (!model->tags.empty()) {
+    ImGui::Spacing();
+    ImGui::TextDisabled("Tags:");
+    for (const auto& tag : model->tags) {
+      ImGui::SameLine();
+      ImGui::TextColored(ImVec4(0.5f, 0.7f, 0.9f, 1.0f), "#%s", tag.c_str());
+    }
+  }
+
+  // Deployment panel section
+  if (show_deployment_) {
+    ImGui::Spacing();
+    ImGui::Separator();
+    ImGui::Text("Deployment Actions");
+    ImGui::Spacing();
+    deployment_panel_.Render(model);
+  }
+}
+
+void RenderModelRegistryWindow(ModelRegistryWidget& widget, bool* open) {
+  if (!open || !*open) return;
+
+  ImGui::SetNextWindowSize(ImVec2(900, 600), ImGuiCond_FirstUseEver);
+
+  if (!ImGui::Begin("Model Registry", open)) {
+    ImGui::End();
+    return;
+  }
+
+  widget.Render();
+
+  ImGui::End();
+}
+
+}  // namespace ui
+}  // namespace studio
+}  // namespace afs

apps/studio/src/ui/components/model_registry.h

@@ -0,0 +1,69 @@
+#pragma once
+
+#include "core/registry_reader.h"
+#include "deployment_panel.h"
+
+#include <array>
+#include <string>
+
+namespace afs {
+namespace studio {
+namespace ui {
+
+// Model Registry widget for listing and managing trained models
+class ModelRegistryWidget {
+ public:
+  ModelRegistryWidget();
+
+  // Render the widget (call this from main render loop)
+  void Render();
+
+  // Reload models from registry
+  void Refresh();
+
+  // Get selected model (if any)
+  const ModelMetadata* GetSelectedModel() const;
+
+ private:
+  void RenderToolbar();
+  void RenderModelList();
+  void RenderModelDetails();
+  void RenderDeploymentPanel();
+  void RenderModelCard(const ModelMetadata& model, int index);
+
+  RegistryReader registry_;
+  DeploymentPanel deployment_panel_;
+  int selected_model_index_ = -1;
+
+  // Filter state
+  std::array<char, 64> filter_text_{};
+  int filter_role_ = 0;       // 0 = All
+  int filter_location_ = 0;   // 0 = All
+  int filter_backend_ = 0;    // 0 = All
+
+  // Filter options
+  static constexpr const char* kRoleOptions[] = {
+      "All", "asm", "debug", "general", "yaze"};
+  static constexpr int kRoleCount = 5;
+
+  static constexpr const char* kLocationOptions[] = {"All", "mac", "windows",
+                                                      "cloud", "halext"};
+  static constexpr int kLocationCount = 5;
+
+  static constexpr const char* kBackendOptions[] = {
+      "All", "ollama", "llama.cpp", "vllm", "transformers", "halext-node"};
+  static constexpr int kBackendCount = 6;
+
+  // UI state
+  bool show_details_ = true;
+  bool show_deployment_ = true;
+  std::string last_error_;
+};
+
+// Render a standalone model registry window
+void RenderModelRegistryWindow(ModelRegistryWidget& widget, bool* open);
+
+}  // namespace ui
+}  // namespace studio
+}  // namespace afs
+

apps/studio/src/ui/components/panels.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <imgui.h>
+#include <string>
+#include <vector>
+#include <functional>
+#include "../../models/state.h"
+#include "../../data_loader.h"
+#include "../shortcuts.h"
+
+namespace afs {
+namespace viz {
+namespace ui {
+
+void RenderInspectorPanel(AppState& state, const DataLoader& loader, ImFont* font_header, const std::string& data_path);
+void RenderDatasetPanel(AppState& state, const DataLoader& loader);
+void RenderSystemsPanel(AppState& state, ImFont* font_header, std::function<void(const char*)> refresh_callback);
+void RenderMenuBar(AppState& state,
+                   std::function<void(const char*)> refresh_callback,
+                   std::function<void()> quit_callback,
+                   ShortcutManager& shortcuts,
+                   bool* show_sample_review,
+                   bool* show_shortcuts_window);
+void RenderSidebar(AppState& state, const DataLoader& loader, ImFont* font_ui, ImFont* font_header);
+
+} // namespace ui
+} // namespace viz
+} // namespace afs

apps/studio/src/ui/components/tabs.cc

@@ -0,0 +1,741 @@
+#include "tabs.h"
+#include "../core.h"
+#include "../../icons.h"
+#include <implot.h>
+#include <algorithm>
+#include <fstream>
+#include <filesystem>
+#include "../../core/logger.h"
+
+namespace afs {
+namespace viz {
+namespace ui {
+
+void RenderKnobsTab(AppState& state, const DataLoader& loader, const std::string& data_path, std::function<void(const char*)> refresh_callback, std::function<void(const std::string&, const std::string&, const std::string&)> log_callback) {
+  ImGui::Text("Runtime Controls");
+  if (ImGui::Button("Refresh Now")) {
+    if (refresh_callback) refresh_callback("ui");
+  }
+  ImGui::SameLine();
+  ImGui::Checkbox("Auto Refresh", &state.auto_refresh);
+  ImGui::SliderFloat("Refresh Interval (s)", &state.refresh_interval_sec, 2.0f, 30.0f);
+
+  ImGui::Separator();
+  ImGui::Text("Simulation");
+  ImGui::Checkbox("Simulate Activity", &state.simulate_activity);
+  ImGui::SliderFloat("Agent Activity", &state.agent_activity_scale, 0.3f, 3.0f);
+  ImGui::SliderFloat("Mission Bias", &state.mission_priority_bias, 0.5f, 2.0f);
+
+  ImGui::Separator();
+  ImGui::Text("Visualization");
+  ImGui::SliderFloat("Chart Height (compact)", &state.chart_height, 130.0f, 240.0f);
+  ImGui::Checkbox("Compact Charts", &state.compact_charts);
+  ImGui::Checkbox("Show Status Strip", &state.show_status_strip);
+  ImGui::Checkbox("Show Controls", &state.show_controls);
+  ImGui::Checkbox("Show Systems Panel", &state.show_systems_panel);
+  ImGui::Checkbox("Allow Workspace Scroll", &state.allow_workspace_scroll);
+  ImGui::Checkbox("Plot Interaction", &state.enable_plot_interaction);
+  if (state.enable_plot_interaction) {
+    ImGui::Checkbox("Plot Zoom Requires Shift", &state.plot_interaction_requires_modifier);
+    if (state.plot_interaction_requires_modifier) {
+      ImGui::TextDisabled("Hold Shift + scroll/drag to pan/zoom plots.");
+    }
+  }
+  ImGui::Checkbox("Reset Layout on Workspace Change", &state.reset_layout_on_workspace_change);
+  ImGui::Checkbox("Auto Columns", &state.auto_chart_columns);
+  if (!state.auto_chart_columns) {
+    ImGui::SliderInt("Chart Columns", &state.chart_columns, 2, 4);
+  }
+  ImGui::SliderFloat("Embedding Sample Rate", &state.embedding_sample_rate, 0.1f, 1.0f);
+  ImGui::SliderFloat("Quality Threshold", &state.quality_threshold, 0.4f, 0.95f);
+  ImGui::SliderInt("Mission Concurrency", &state.mission_concurrency, 1, 12);
+  ImGui::Checkbox("Verbose Logs", &state.verbose_logs);
+  ImGui::Checkbox("Pulse Animations", &state.use_pulse_animations);
+  ImGui::Checkbox("Plot Legends", &state.show_plot_legends);
+  ImGui::Checkbox("Plot Markers", &state.show_plot_markers);
+  ImGui::Checkbox("Data Scientist Mode", &state.data_scientist_mode);
+  ImGui::Checkbox("Show All Chart Windows", &state.show_all_charts);
+
+  ImGui::Separator();
+  ImGui::Text("Advanced");
+  if (ImGui::Button("Purge Mission Queue")) {
+      state.missions.clear();
+      if (log_callback) log_callback("system", "Mission queue purged.", "system");
+  }
+  ImGui::SameLine();
+  if (ImGui::Button("Force Reconnect")) {
+      if (log_callback) log_callback("system", "Forcing backend reconnect...", "system");
+  }
+
+  ImGui::Separator();
+  ImGui::Text(ICON_MD_MODEL_TRAINING " Agent Training");
+  ImGui::SliderFloat("Learning Rate", &state.trainer_lr, 0.00001f, 0.001f, "%.5f");
+  ImGui::SliderInt("Batch Size", &state.trainer_batch_size, 8, 128);
+  ImGui::SliderInt("Epochs", &state.trainer_epochs, 1, 100);
+  ImGui::SliderFloat("Gen Temperature", &state.generator_temp, 0.1f, 2.0f);
+  ImGui::SliderFloat("Rejection Floor", &state.rejection_threshold, 0.2f, 0.95f);
+
+  ImGui::Separator();
+  ImGui::TextDisabled("Data Path");
+  ImGui::TextWrapped("%s", data_path.c_str());
+}
+
+void RenderAgentsTab(AppState& state, ImFont* font_ui, ImFont* font_header, std::function<void(const std::string&, const std::string&, const std::string&)> log_callback) {
+  ImGui::Text("Background Agents");
+  ImGui::InputTextWithHint("##AgentName", "Agent name", state.new_agent_name.data(), state.new_agent_name.size());
+  ImGui::InputTextWithHint("##AgentRole", "Role", state.new_agent_role.data(), state.new_agent_role.size());
+
+  if (ImGui::Button("Spawn Agent")) {
+    std::string name(state.new_agent_name.data());
+    std::string role(state.new_agent_role.data());
+    if (name.empty()) name = "Agent " + std::to_string(state.agents.size() + 1);
+    if (role.empty()) role = "Generalist";
+
+    AgentState agent;
+    agent.name = name;
+    agent.role = role;
+    agent.status = "Active";
+    agent.enabled = true;
+    agent.activity_phase = 0.3f * static_cast<float>(state.agents.size() + 1);
+    state.agents.push_back(std::move(agent));
+
+    if (log_callback) log_callback(name, "Agent provisioned.", "agent");
+  }
+
+  ImGui::SameLine();
+  ImGui::SetNextItemWidth(60.0f);
+  ImGui::InputInt("##SpawnAgentCount", &state.spawn_agent_count);
+  state.spawn_agent_count = std::max(1, std::min(state.spawn_agent_count, 12));
+  ImGui::SameLine();
+  if (ImGui::Button("Spawn Batch")) {
+    std::string base_nameExtra(state.new_agent_name.data());
+    if (base_nameExtra.empty()) base_nameExtra = "Agent";
+    std::string role(state.new_agent_role.data());
+    if (role.empty()) role = "Generalist";
+
+    for (int i = 0; i < state.spawn_agent_count; ++i) {
+      AgentState agent;
+      agent.name = base_nameExtra + " " + std::to_string(state.agents.size() + 1);
+      agent.role = role;
+      agent.status = "Active";
+      agent.enabled = true;
+      agent.activity_phase = 0.3f * static_cast<float>(state.agents.size() + 1);
+      state.agents.push_back(std::move(agent));
+    }
+    if (log_callback) log_callback("system", "Batch spawn complete.", "system");
+  }
+
+  if (ImGui::Button("Pause All")) {
+    for (auto& agent : state.agents) {
+      agent.enabled = false;
+      agent.status = "Paused";
+    }
+    if (log_callback) log_callback("system", "All agents paused.", "system");
+  }
+  ImGui::SameLine();
+  if (ImGui::Button("Resume All")) {
+    for (auto& agent : state.agents) {
+      agent.enabled = true;
+      if (agent.status == "Paused") agent.status = "Idle";
+    }
+    if (log_callback) log_callback("system", "All agents resumed.", "system");
+  }
+
+  float table_height = ImGui::GetContentRegionAvail().y;
+  if (ImGui::BeginTable("AgentsTable", 8, ImGuiTableFlags_RowBg | ImGuiTableFlags_BordersInner | ImGuiTableFlags_Resizable | ImGuiTableFlags_ScrollY, ImVec2(0, table_height))) {
+    ImGui::TableSetupColumn("Agent");
+    ImGui::TableSetupColumn("Role");
+    ImGui::TableSetupColumn("Status");
+    ImGui::TableSetupColumn("Queue");
+    ImGui::TableSetupColumn("Success");
+    ImGui::TableSetupColumn("Latency");
+    ImGui::TableSetupColumn("CPU/Mem");
+    ImGui::TableSetupColumn("On");
+    ImGui::TableHeadersRow();
+
+    for (size_t i = 0; i < state.agents.size(); ++i) {
+      auto& agent = state.agents[i];
+      ImGui::PushID(static_cast<int>(i));
+      const char* status = agent.enabled ? (agent.queue_depth > 0 ? "Busy" : "Idle") : "Paused";
+
+      ImGui::TableNextRow();
+      bool is_selected = (state.selected_agent_index == static_cast<int>(i));
+      
+      float pulse = 0.0f;
+      if (state.use_pulse_animations && agent.enabled && agent.status != "Idle") {
+          pulse = 0.5f + 0.5f * std::sin(state.pulse_timer * 6.0f);
+      }
+      
+      if (pulse > 0.01f) {
+          ImGui::TableSetBgColor(ImGuiTableBgTarget_RowBg0, ImGui::GetColorU32(GetStepColor(pulse * 0.2f, state)));
+      }
+
+      if (ImGui::Selectable(agent.name.c_str(), is_selected, ImGuiSelectableFlags_SpanAllColumns | ImGuiSelectableFlags_AllowOverlap)) {
+        state.selected_agent_index = static_cast<int>(i);
+      }
+
+      ImGui::TableSetColumnIndex(1); ImGui::Text("%s", agent.role.c_str());
+      ImGui::TableSetColumnIndex(2); ImGui::Text("%s", status);
+      ImGui::TableSetColumnIndex(3); ImGui::Text("%d", agent.queue_depth);
+      ImGui::TableSetColumnIndex(4); ImGui::Text("%.0f%%", agent.success_rate * 100.0f);
+      ImGui::TableSetColumnIndex(5); ImGui::Text("%.1f ms", agent.avg_latency_ms);
+      ImGui::TableSetColumnIndex(6); ImGui::Text("%.0f/%.0f", agent.cpu_pct, agent.mem_pct);
+      ImGui::TableSetColumnIndex(7); ImGui::Checkbox("##enabled", &agent.enabled);
+      ImGui::PopID();
+    }
+    ImGui::EndTable();
+  }
+
+  if (state.selected_agent_index >= 0 && state.selected_agent_index < static_cast<int>(state.agents.size())) {
+    auto& agent = state.agents[state.selected_agent_index];
+    ImGui::Separator();
+    ImGui::Text("Agent Details: %s", agent.name.c_str());
+    ImGui::Columns(2, "AgentDetailCols", false);
+    ImGui::Text("Role: %s", agent.role.c_str());
+    ImGui::Text("Status: %s", agent.status.c_str());
+    ImGui::Text("Tasks: %d", agent.tasks_completed);
+    ImGui::NextColumn();
+    
+    if (state.sparkline_data.size() < 40) {
+       for(int i=0; i<40; ++i) state.sparkline_data.push_back(0.4f + 0.5f * (float)rand()/RAND_MAX);
+    }
+    ImPlot::PushStyleColor(ImPlotCol_Line, ImVec4(0.3f, 0.7f, 0.3f, 1.0f));
+    if (ImPlot::BeginPlot("##Sparkline", ImVec2(-1, 60), ImPlotFlags_CanvasOnly)) {
+        ImPlot::SetupAxes(nullptr, nullptr, ImPlotAxisFlags_NoDecorations, ImPlotAxisFlags_NoDecorations);
+        ImPlot::PlotLine("Activity", state.sparkline_data.data(), 40);
+        ImPlot::EndPlot();
+    }
+    ImPlot::PopStyleColor();
+    ImGui::Columns(1);
+    
+    if (ImGui::Button("Reset Agent Stats")) {
+        agent.tasks_completed = 0;
+        if (log_callback) log_callback(agent.name, "Stats reset.", "agent");
+    }
+    ImGui::SameLine();
+    if (ImGui::Button("Force Restart")) {
+        if (log_callback) log_callback(agent.name, "Restarting...", "system");
+    }
+  }
+}
+
+void RenderMissionsTab(AppState& state, std::function<void(const std::string&, const std::string&, const std::string&)> log_callback) {
+  ImGui::Text("Mission Queue");
+  ImGui::InputTextWithHint("##MissionName", "Mission name", state.new_mission_name.data(), state.new_mission_name.size());
+  ImGui::InputTextWithHint("##MissionOwner", "Owner", state.new_mission_owner.data(), state.new_mission_owner.size());
+  ImGui::SliderInt("Priority", &state.new_mission_priority, 1, 5);
+
+  if (ImGui::Button("Create Mission")) {
+    std::string name(state.new_mission_name.data());
+    std::string owner(state.new_mission_owner.data());
+    if (name.empty()) name = "Mission " + std::to_string(state.missions.size() + 1);
+    if (owner.empty()) owner = "Ops";
+
+    MissionState mission;
+    mission.name = name;
+    mission.owner = owner;
+    mission.status = "Queued";
+    mission.priority = state.new_mission_priority;
+    state.missions.push_back(std::move(mission));
+    if (log_callback) log_callback("system", "Mission queued: " + name, "system");
+  }
+
+  ImGui::SameLine();
+  ImGui::SetNextItemWidth(60.0f);
+  ImGui::InputInt("##SpawnMissionCount", &state.spawn_mission_count);
+  state.spawn_mission_count = std::max(1, std::min(state.spawn_mission_count, 10));
+  ImGui::SameLine();
+  if (ImGui::Button("Spawn Batch")) {
+    std::string base_nameExtra(state.new_mission_name.data());
+    if (base_nameExtra.empty()) base_nameExtra = "Mission";
+    std::string owner(state.new_mission_owner.data());
+    if (owner.empty()) owner = "Ops";
+
+    for (int i = 0; i < state.spawn_mission_count; ++i) {
+      MissionState mission;
+      mission.name = base_nameExtra + " " + std::to_string(state.missions.size() + 1);
+      mission.owner = owner;
+      mission.status = "Queued";
+      mission.priority = state.new_mission_priority;
+      state.missions.push_back(std::move(mission));
+    }
+    if (log_callback) log_callback("system", "Batch missions queued.", "system");
+  }
+
+  if (ImGui::Button("Clear Completed")) {
+    state.missions.erase(std::remove_if(state.missions.begin(), state.missions.end(),
+                                   [](const MissionState& mission) {
+                                     return mission.status == "Complete" && !mission.data_backed;
+                                   }), state.missions.end());
+  }
+
+  float table_height = ImGui::GetContentRegionAvail().y;
+  if (ImGui::BeginTable("MissionsTable", 6, ImGuiTableFlags_RowBg | ImGuiTableFlags_BordersInner | ImGuiTableFlags_Resizable | ImGuiTableFlags_ScrollY, ImVec2(0, table_height))) {
+    ImGui::TableSetupColumn("Mission");
+    ImGui::TableSetupColumn("Owner");
+    ImGui::TableSetupColumn("Status");
+    ImGui::TableSetupColumn("Priority");
+    ImGui::TableSetupColumn("Progress");
+    ImGui::TableSetupColumn("Data");
+    ImGui::TableHeadersRow();
+
+    for (size_t i = 0; i < state.missions.size(); ++i) {
+      auto& mission = state.missions[i];
+      ImGui::PushID(static_cast<int>(i));
+      ImGui::TableNextRow();
+      ImGui::TableSetColumnIndex(0); ImGui::Text("%s", mission.name.c_str());
+      ImGui::TableSetColumnIndex(1); ImGui::Text("%s", mission.owner.c_str());
+      ImGui::TableSetColumnIndex(2); ImGui::Text("%s", mission.status.c_str());
+      ImGui::TableSetColumnIndex(3); ImGui::Text("%d", mission.priority);
+      ImGui::TableSetColumnIndex(4); ImGui::ProgressBar(mission.progress, ImVec2(-FLT_MIN, 0.0f));
+      ImGui::TableSetColumnIndex(5); ImGui::Text("%s", mission.data_backed ? "data" : "live");
+      ImGui::PopID();
+    }
+    ImGui::EndTable();
+  }
+}
+
+void RenderLogsTab(AppState& state, std::function<void(const std::string&, const std::string&, const std::string&)> log_callback) {
+  ImGui::Text(ICON_MD_CHAT " Agent Chat & Orchestration");
+  
+  // Provider Selection
+  const char* providers[] = { "Local (Ollama)", "Remote (OpenWebUI)", "Direct (afs SVC)", "Mock" };
+  static int current_provider = 0;
+  ImGui::SetNextItemWidth(200);
+  ImGui::Combo("Provider", &current_provider, providers, IM_ARRAYSIZE(providers));
+  ImGui::SameLine();
+  
+  std::vector<const char*> agent_labels;
+  agent_labels.push_back("All Agents");
+  for (const auto& agent : state.agents) {
+    agent_labels.push_back(agent.name.c_str());
+  }
+  if (state.log_agent_index < 0 || state.log_agent_index >= static_cast<int>(agent_labels.size())) {
+    state.log_agent_index = 0;
+  }
+  ImGui::SetNextItemWidth(150);
+  ImGui::Combo("Target", &state.log_agent_index, agent_labels.data(), static_cast<int>(agent_labels.size()));
+
+  ImGui::Separator();
+
+  float footer_height = 80.0f;
+  float log_height = ImGui::GetContentRegionAvail().y - footer_height;
+  if (log_height < 120.0f) log_height = 120.0f;
+
+  ImGui::BeginChild("LogList", ImVec2(0, log_height), true, ImGuiWindowFlags_AlwaysVerticalScrollbar);
+
+  std::string filter(state.log_filter.data());
+  for (const auto& entry : state.logs) {
+    if (state.log_agent_index > 0 && entry.agent != agent_labels[state.log_agent_index]) continue;
+    if (!filter.empty()) {
+      if (entry.message.find(filter) == std::string::npos && entry.agent.find(filter) == std::string::npos) continue;
+    }
+
+    bool is_user = (entry.kind == "user");
+    bool is_system = (entry.kind == "system");
+    
+    ImVec2 size = ImGui::GetContentRegionAvail();
+    float bubble_width = std::min(size.x * 0.75f, 500.0f);
+    
+    if (is_user) ImGui::SetCursorPosX(size.x - bubble_width - 8.0f);
+    else ImGui::SetCursorPosX(8.0f);
+
+    ImGui::BeginGroup();
+    
+    // Bubble header
+    ImGui::TextDisabled("%s", entry.agent.c_str());
+    
+    // Bubble body
+    ImVec4 bg_color = is_user ? ImVec4(0.2f, 0.4f, 0.8f, 0.4f) : (is_system ? ImVec4(0.3f, 0.3f, 0.3f, 0.4f) : ImVec4(0.2f, 0.6f, 0.4f, 0.4f));
+    ImGui::PushStyleColor(ImGuiCol_ChildBg, bg_color);
+    ImGui::PushStyleVar(ImGuiStyleVar_ChildRounding, 8.0f);
+    ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(10, 8));
+    
+    std::string child_id = "msg_" + std::to_string(&entry - &state.logs[0]);
+    float text_h = ImGui::CalcTextSize(entry.message.c_str(), nullptr, false, bubble_width - 20).y + 20;
+    
+    ImGui::BeginChild(child_id.c_str(), ImVec2(bubble_width, text_h), true, ImGuiWindowFlags_NoScrollbar);
+    ImGui::TextWrapped("%s", entry.message.c_str());
+    ImGui::EndChild();
+    
+    ImGui::PopStyleVar(2);
+    ImGui::PopStyleColor();
+    
+    ImGui::EndGroup();
+    ImGui::Spacing();
+  }
+  
+  if (ImGui::GetScrollY() >= ImGui::GetScrollMaxY())
+      ImGui::SetScrollHereY(1.0f);
+
+  ImGui::EndChild();
+
+  ImGui::Separator();
+  ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x - 100);
+  if (ImGui::InputTextWithHint("##ChatInput", "Message swarm...", state.chat_input.data(), state.chat_input.size(), ImGuiInputTextFlags_EnterReturnsTrue)) {
+      goto send_msg;
+  }
+  ImGui::SameLine();
+  if (ImGui::Button("Send", ImVec2(90, 0))) {
+  send_msg:
+    std::string message(state.chat_input.data());
+    if (!message.empty()) {
+      std::string target = agent_labels[state.log_agent_index];
+      if (log_callback) log_callback("user", message, "user");
+      
+      // Simulate response
+      if (state.log_agent_index > 0) {
+        if (log_callback) log_callback(target, "Processing request via " + std::string(providers[current_provider]) + ": " + message, "agent");
+      } else {
+        if (log_callback) log_callback("Orchestrator", "Coordinating agents via " + std::string(providers[current_provider]) + "...", "system");
+      }
+      
+      state.chat_input[0] = '\0';
+    }
+  }
+}
+
+void RenderContextTab(AppState& state, TextEditor& text_editor, MemoryEditorWidget& memory_editor, std::function<void(const std::string&, const std::string&, const std::string&)> log_callback) {
+  ImGui::Text("AFS Context Browser");
+  ImGui::Separator();
+
+  if (ImGui::Button("..") || ImGui::Button("Up")) {
+    if (state.current_browser_path.has_parent_path()) {
+      state.current_browser_path = state.current_browser_path.parent_path();
+      state.browser_entries.clear();
+    }
+  }
+  ImGui::SameLine();
+  ImGui::TextDisabled("Path: %s", state.current_browser_path.string().c_str());
+
+  if (state.browser_entries.empty()) RefreshBrowserEntries(state);
+
+  float table_height = ImGui::GetContentRegionAvail().y * 0.6f;
+  if (ImGui::BeginTable("FileBrowser", 3, ImGuiTableFlags_RowBg | ImGuiTableFlags_ScrollY, ImVec2(0, table_height))) {
+    ImGui::TableSetupColumn("Name", ImGuiTableColumnFlags_WidthStretch);
+    ImGui::TableSetupColumn("Size", ImGuiTableColumnFlags_WidthFixed, 80.0f);
+    ImGui::TableSetupColumn("Action", ImGuiTableColumnFlags_WidthFixed, 60.0f);
+    ImGui::TableHeadersRow();
+
+    for (const auto& entry : state.browser_entries) {
+      ImGui::TableNextRow();
+      ImGui::TableNextColumn();
+      if (entry.is_directory) {
+        if (ImGui::Selectable((entry.name + "/").c_str(), false)) {
+          state.current_browser_path = entry.path;
+          state.browser_entries.clear();
+          break;
+        }
+      } else {
+        if (ImGui::Selectable(entry.name.c_str(), state.selected_file_path == entry.path)) {
+            LoadFile(state, entry.path, text_editor);
+        }
+      }
+
+      ImGui::TableNextColumn();
+      if (!entry.is_directory) ImGui::TextDisabled("%.1f KB", entry.size / 1024.0f);
+
+      ImGui::TableNextColumn();
+      if (!entry.is_directory) {
+        if (ImGui::Button(("Add##" + entry.name).c_str())) {
+          ContextItem item;
+          item.name = entry.name;
+          item.path = entry.path;
+          item.type = entry.path.extension().string();
+          state.selected_context.push_back(item);
+          if (log_callback) log_callback("system", "Added to context: " + entry.name, "system");
+        }
+      }
+    }
+    ImGui::EndTable();
+  }
+
+  ImGui::Separator();
+  ImGui::Text("File View (%s)", state.selected_file_path.filename().string().c_str());
+  if (state.is_binary_view) {
+      memory_editor.DrawContents(state.binary_data.data(), state.binary_data.size());
+  } else {
+      text_editor.Render("TextEditor", ImVec2(0, 0), true);
+  }
+
+  ImGui::Separator();
+  ImGui::Text("Selected Context (%d items)", (int)state.selected_context.size());
+  ImGui::BeginChild("ContextList", ImVec2(0, 0), true);
+  for (size_t i = 0; i < state.selected_context.size(); ++i) {
+    auto& item = state.selected_context[i];
+    ImGui::PushID((int)i);
+    ImGui::Checkbox("##on", &item.enabled);
+    ImGui::SameLine();
+    ImGui::Text("%s", item.name.c_str());
+    if (ImGui::IsItemHovered()) ImGui::SetTooltip("%s", item.path.string().c_str());
+    ImGui::SameLine(ImGui::GetContentRegionAvail().x - 40);
+    if (ImGui::Button("X")) {
+      state.selected_context.erase(state.selected_context.begin() + i);
+      ImGui::PopID();
+      break;
+    }
+    ImGui::PopID();
+  }
+  ImGui::EndChild();
+}
+
+void RenderAgentPromptTab(AppState& state, std::function<void(const std::string&, const std::string&, const std::string&)> log_callback) {
+  ImGui::Text("Agent Orchestrator Prompt");
+  ImGui::Separator();
+
+  ImGui::Text("System Prompt");
+  ImGui::InputTextMultiline("##SysPrompt", state.system_prompt.data(), state.system_prompt.size(), ImVec2(-1, 80));
+
+  ImGui::Spacing();
+  ImGui::Text("User Message");
+  ImGui::InputTextMultiline("##UserPrompt", state.user_prompt.data(), state.user_prompt.size(), ImVec2(-1, 120));
+
+  static int target_agent = 0;
+  std::vector<const char*> agent_names = {"Orchestrator", "Coordinator"};
+  for (const auto& a : state.agents) agent_names.push_back(a.name.c_str());
+  
+  ImGui::Combo("Target", &target_agent, agent_names.data(), (int)agent_names.size());
+
+  if (ImGui::Button("Trigger Background Agent", ImVec2(-1, 40))) {
+    std::string msg = "Sent prompt to " + std::string(agent_names[target_agent]);
+    if (log_callback) log_callback("user", msg, "user");
+    if (log_callback) log_callback(agent_names[target_agent], "Analyzing context with " + std::to_string(state.selected_context.size()) + " files...", "agent");
+    state.user_prompt[0] = '\0';
+  }
+
+  ImGui::Separator();
+  ImGui::TextDisabled("Quick Context Meta:");
+  for (const auto& item : state.selected_context) {
+    if (item.enabled) {
+      ImGui::TextDisabled(" - %s (%s)", item.name.c_str(), item.type.c_str());
+    }
+  }
+}
+
+void RenderTablesTab(AppState& state, const DataLoader& loader) {
+  if (ImGui::BeginTabBar("TableGroups")) {
+    if (ImGui::BeginTabItem("Generator Detailed")) {
+      const auto& stats = loader.GetGeneratorStats();
+      if (ImGui::BeginTable("GenDetailed", 6, ImGuiTableFlags_RowBg | ImGuiTableFlags_Resizable | ImGuiTableFlags_Borders)) {
+        ImGui::TableSetupColumn("Generator");
+        ImGui::TableSetupColumn("Accepted");
+        ImGui::TableSetupColumn("Rejected");
+        ImGui::TableSetupColumn("Rate %");
+        ImGui::TableSetupColumn("Avg Q");
+        ImGui::TableSetupColumn("Status");
+        ImGui::TableHeadersRow();
+
+        for (const auto& s : stats) {
+          ImGui::TableNextRow();
+          ImGui::TableNextColumn(); ImGui::Text("%s", s.name.c_str());
+          ImGui::TableNextColumn(); ImGui::Text("%d", s.samples_accepted);
+          ImGui::TableNextColumn(); ImGui::Text("%d", s.samples_rejected);
+          ImGui::TableNextColumn(); 
+          float rate = s.acceptance_rate * 100.0f;
+          ImGui::Text("%.1f%%", rate);
+          if (rate < 40.0f) { ImGui::SameLine(); ImGui::TextColored(ImVec4(1,0,0,1), "[!] "); }
+          
+          ImGui::TableNextColumn(); ImGui::Text("%.3f", s.avg_quality);
+          ImGui::TableNextColumn(); 
+          if (s.samples_rejected > s.samples_accepted) ImGui::TextColored(ImVec4(1,0.5,0,1), "Struggling");
+          else ImGui::TextColored(ImVec4(0,1,0.5,1), "Healthy");
+        }
+        ImGui::EndTable();
+      }
+      ImGui::EndTabItem();
+    }
+    
+    if (ImGui::BeginTabItem("Quality Metrics")) {
+      const auto& trends = loader.GetQualityTrends();
+      if (ImGui::BeginTable("QualityDetailed", 5, ImGuiTableFlags_RowBg | ImGuiTableFlags_Borders)) {
+        ImGui::TableSetupColumn("Domain");
+        ImGui::TableSetupColumn("Metric");
+        ImGui::TableSetupColumn("Mean Score");
+        ImGui::TableSetupColumn("Trend");
+        ImGui::TableSetupColumn("Sparkline");
+        ImGui::TableHeadersRow();
+
+        for (size_t i = 0; i < trends.size(); ++i) {
+          const auto& t = trends[i];
+          ImGui::TableNextRow();
+          ImGui::TableNextColumn(); ImGui::Text("%s", t.domain.c_str());
+          ImGui::TableNextColumn(); ImGui::Text("%s", t.metric.c_str());
+          ImGui::TableNextColumn(); ImGui::Text("%.4f", t.mean);
+          ImGui::TableNextColumn(); 
+          if (t.trend_direction == "improving") ImGui::TextColored(ImVec4(0,1,0,1), "INC");
+          else if (t.trend_direction == "declining") ImGui::TextColored(ImVec4(1,0,0,1), "DEC");
+          else ImGui::Text("---");
+          
+          ImGui::TableNextColumn();
+          ImGui::PushID((int)i);
+          if (ImPlot::BeginPlot("##Spark", ImVec2(-1, 24), ImPlotFlags_CanvasOnly | ImPlotFlags_NoInputs)) {
+            ImPlot::SetupAxes(nullptr,nullptr,ImPlotAxisFlags_NoDecorations,ImPlotAxisFlags_NoDecorations);
+            ImPlot::PlotLine("##v", t.values.data(), (int)t.values.size());
+            ImPlot::EndPlot();
+          }
+          ImGui::PopID();
+        }
+        ImGui::EndTable();
+      }
+      ImGui::EndTabItem();
+    }
+
+    if (ImGui::BeginTabItem("Training Runs")) {
+        const auto& runs = loader.GetTrainingRuns();
+        if (ImGui::BeginTable("TrainingDetailed", 5, ImGuiTableFlags_RowBg | ImGuiTableFlags_Borders)) {
+            ImGui::TableSetupColumn("Run ID");
+            ImGui::TableSetupColumn("Model");
+            ImGui::TableSetupColumn("Samples");
+            ImGui::TableSetupColumn("Loss");
+            ImGui::TableSetupColumn("Eval Metrics");
+            ImGui::TableHeadersRow();
+
+            for (const auto& r : runs) {
+                ImGui::TableNextRow();
+                ImGui::TableNextColumn(); ImGui::Text("%s", r.run_id.substr(0, 16).c_str());
+                ImGui::TableNextColumn(); ImGui::Text("%s", r.model_name.c_str());
+                ImGui::TableNextColumn(); ImGui::Text("%d", r.samples_count);
+                ImGui::TableNextColumn(); ImGui::Text("%.5f", r.final_loss);
+                ImGui::TableNextColumn();
+                for (const auto& [name, val] : r.eval_metrics) {
+                    ImGui::TextDisabled("%s: %.3f", name.c_str(), val);
+                }
+            }
+            ImGui::EndTable();
+        }
+        ImGui::EndTabItem();
+    }
+    ImGui::EndTabBar();
+  }
+}
+
+void RenderServicesTab(AppState& state, std::function<void(const std::string&, const std::string&, const std::string&)> log_callback) {
+  ImGui::Text("Core Services");
+  
+  auto render_service = [&log_callback](const char* name, const char* status, float health, const char* desc) {
+    ImGui::PushID(name);
+    ImGui::BeginGroup();
+    ImGui::Text("%s", name);
+    ImGui::TextDisabled("%s", desc);
+    
+    ImVec4 status_color = ImVec4(0.4f, 0.8f, 0.4f, 1.0f);
+    if (strcmp(status, "Warning") == 0) status_color = ImVec4(0.9f, 0.7f, 0.2f, 1.0f);
+    else if (strcmp(status, "Error") == 0) status_color = ImVec4(0.9f, 0.3f, 0.3f, 1.0f);
+    
+    ImGui::TextColored(status_color, "Status: %s", status);
+    ImGui::ProgressBar(health, ImVec2(-1.0f, 0.0f));
+    ImGui::EndGroup();
+    ImGui::PopID();
+    ImGui::Spacing();
+    ImGui::Separator();
+    ImGui::Spacing();
+  };
+
+  render_service("Orchestrator", "Active", 0.98f, "Main mission control & dispatch");
+  render_service("Knowledge Base", "Active", 0.92f, "Vector DB & Concept Index");
+  render_service("Trainer", "Active", 0.85f, "Active learning loop coordination");
+  render_service("Embedding SVC", "Warning", 0.65f, "Latency spike detected in region 42");
+  
+  if (ImGui::Button("Reset Services")) {
+    if (log_callback) log_callback("system", "Services reset signal sent.", "system");
+  }
+}
+
+void RefreshBrowserEntries(AppState& state) {
+  state.browser_entries.clear();
+  if (state.current_browser_path.has_parent_path()) {
+      state.browser_entries.push_back({"..", state.current_browser_path.parent_path(), true, 0, false});
+  }
+  
+  std::error_code ec;
+  auto it = std::filesystem::directory_iterator(state.current_browser_path, ec);
+  if (ec) {
+      LOG_ERROR("Failed to open directory: " + state.current_browser_path.string() + " (" + ec.message() + ")");
+      return;
+  }
+
+  try {
+    for (const auto& entry : it) {
+      std::error_code entry_ec;
+      if (entry.is_directory(entry_ec)) {
+          std::error_code context_ec;
+          bool has_context = false;
+          try {
+              has_context = std::filesystem::exists(entry.path() / ".context", context_ec);
+          } catch (...) {}
+          state.browser_entries.push_back({entry.path().filename().string(), entry.path(), true, 0, has_context});
+      } else if (entry.is_regular_file(entry_ec)) {
+          state.browser_entries.push_back({entry.path().filename().string(), entry.path(), false, entry.file_size(entry_ec), false});
+      }
+    }
+  } catch (...) {
+      LOG_WARN("Error during directory iteration in " + state.current_browser_path.string());
+  }
+  
+  std::sort(state.browser_entries.begin(), state.browser_entries.end(), [](const FileEntry& a, const FileEntry& b) {
+      if (a.is_directory != b.is_directory) return a.is_directory > b.is_directory;
+      return a.name < b.name;
+  });
+}
+
+void LoadFile(AppState& state, const std::filesystem::path& path, TextEditor& text_editor) {
+  state.selected_file_path = path;
+  std::string ext = path.extension().string();
+  static const std::vector<std::string> text_exts = {
+      ".cpp", ".cc", ".c", ".h", ".hpp", ".py", ".md", ".json", ".txt", ".xml", ".org", ".asm", ".s", ".cmake", ".yml", ".yaml", ".sh"
+  };
+  
+  bool is_text = false;
+  for (const auto& e : text_exts) if (ext == e) { is_text = true; break; }
+  
+  if (is_text) {
+      state.is_binary_view = false;
+      std::ifstream t(path);
+      if (t.is_open()) {
+          std::string str((std::istreambuf_iterator<char>(t)), std::istreambuf_iterator<char>());
+          text_editor.SetText(str);
+          if (ext == ".cpp" || ext == ".cc" || ext == ".h" || ext == ".hpp") text_editor.SetLanguageDefinition(TextEditor::LanguageDefinition::CPlusPlus());
+          else if (ext == ".sql") text_editor.SetLanguageDefinition(TextEditor::LanguageDefinition::SQL());
+          else text_editor.SetLanguageDefinition(TextEditor::LanguageDefinition());
+      }
+  } else {
+      state.is_binary_view = true;
+      std::ifstream file(path, std::ios::binary | std::ios::ate);
+      if (file.is_open()) {
+          std::streamsize size = file.tellg();
+          file.seekg(0, std::ios::beg);
+          if (size <= 10 * 1024 * 1024) {
+              state.binary_data.resize(size);
+              file.read((char*)state.binary_data.data(), size);
+          } else state.binary_data.clear();
+      }
+  }
+}
+
+void RenderMarkdown(const std::string& content, ImFont* font_ui, ImFont* font_header, ThemeProfile current_theme) {
+  if (font_ui) ImGui::PushFont(font_ui);
+  const char* p = content.c_str();
+  const char* end = p + content.size();
+  while (p < end) {
+      const char* line_end = strchr(p, '\n');
+      if (!line_end) line_end = end;
+      std::string line(p, line_end);
+      if (line.substr(0, 2) == "# ") {
+          if (font_header) ImGui::PushFont(font_header);
+          ImGui::TextColored(GetThemeColor(ImGuiCol_PlotLines, current_theme), "%s", line.substr(2).c_str());
+          if (font_header) ImGui::PopFont();
+      } else if (line.substr(0, 3) == "## ") {
+          if (font_header) ImGui::PushFont(font_header);
+          ImGui::Text("%s", line.substr(3).c_str());
+          if (font_header) ImGui::PopFont();
+      } else if (line.substr(0, 4) == "### ") ImGui::TextColored(ImVec4(0.8f, 0.8f, 0.8f, 1.0f), "%s", line.substr(4).c_str());
+      else if (line.substr(0, 2) == "- ") { ImGui::Bullet(); ImGui::SameLine(); ImGui::TextWrapped("%s", line.substr(2).c_str()); }
+      else ImGui::TextWrapped("%s", line.c_str());
+      p = line_end + 1;
+  }
+  if (font_ui) ImGui::PopFont();
+}
+
+} // namespace ui
+} // namespace viz
+} // namespace afs

apps/studio/src/ui/components/tabs.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <imgui.h>
+#include <string>
+#include <vector>
+#include <filesystem>
+#include "../../models/state.h"
+#include "../../data_loader.h"
+#include "../../widgets/text_editor.h"
+#include "../../widgets/imgui_memory_editor.h"
+
+namespace afs {
+namespace viz {
+namespace ui {
+
+void RenderKnobsTab(AppState& state, const DataLoader& loader, const std::string& data_path, std::function<void(const char*)> refresh_callback, std::function<void(const std::string&, const std::string&, const std::string&)> log_callback);
+void RenderAgentsTab(AppState& state, ImFont* font_ui, ImFont* font_header, std::function<void(const std::string&, const std::string&, const std::string&)> log_callback);
+void RenderMissionsTab(AppState& state, std::function<void(const std::string&, const std::string&, const std::string&)> log_callback);
+void RenderLogsTab(AppState& state, std::function<void(const std::string&, const std::string&, const std::string&)> log_callback);
+void RenderContextTab(AppState& state, TextEditor& text_editor, MemoryEditorWidget& memory_editor, std::function<void(const std::string&, const std::string&, const std::string&)> log_callback);
+void RenderAgentPromptTab(AppState& state, std::function<void(const std::string&, const std::string&, const std::string&)> log_callback);
+void RenderTablesTab(AppState& state, const DataLoader& loader);
+void RenderServicesTab(AppState& state, std::function<void(const std::string&, const std::string&, const std::string&)> log_callback);
+void RenderComparisonView(AppState& state, const DataLoader& loader, ImFont* font_ui, ImFont* font_header);
+
+// Helpers
+void RefreshBrowserEntries(AppState& state);
+void LoadFile(AppState& state, const std::filesystem::path& path, TextEditor& text_editor);
+void RenderMarkdown(const std::string& content, ImFont* font_ui, ImFont* font_header, ThemeProfile current_theme);
+
+} // namespace ui
+} // namespace viz
+} // namespace afs

apps/studio/src/ui/components/training_dashboard.cc

@@ -0,0 +1,275 @@
+#include "training_dashboard.h"
+
+#include <imgui.h>
+#include <implot.h>
+
+#include <algorithm>
+#include <cmath>
+
+namespace afs {
+namespace studio {
+namespace ui {
+
+TrainingDashboardWidget::TrainingDashboardWidget() {
+  Refresh();
+}
+
+void TrainingDashboardWidget::Refresh() {
+  std::string error;
+  if (!monitor_.Poll(&error)) {
+    last_error_ = error;
+  } else {
+    last_error_.clear();
+  }
+}
+
+void TrainingDashboardWidget::Render() {
+  // Auto-refresh check
+  if (auto_refresh_ && monitor_.ShouldRefresh()) {
+    Refresh();
+  }
+
+  // Toolbar
+  if (ImGui::Button("Refresh")) {
+    Refresh();
+  }
+  ImGui::SameLine();
+  ImGui::Checkbox("Auto", &auto_refresh_);
+  ImGui::SameLine();
+
+  const auto& state = monitor_.GetState();
+
+  // Status indicator
+  ImVec4 status_color;
+  const char* status_text;
+  switch (state.status) {
+    case TrainingStatus::kRunning:
+      status_color = ImVec4(0.2f, 0.8f, 0.2f, 1.0f);
+      status_text = "RUNNING";
+      break;
+    case TrainingStatus::kCompleted:
+      status_color = ImVec4(0.3f, 0.6f, 1.0f, 1.0f);
+      status_text = "COMPLETED";
+      break;
+    case TrainingStatus::kFailed:
+      status_color = ImVec4(0.9f, 0.3f, 0.3f, 1.0f);
+      status_text = "FAILED";
+      break;
+    case TrainingStatus::kPaused:
+      status_color = ImVec4(0.9f, 0.7f, 0.2f, 1.0f);
+      status_text = "PAUSED";
+      break;
+    default:
+      status_color = ImVec4(0.5f, 0.5f, 0.5f, 1.0f);
+      status_text = "IDLE";
+      break;
+  }
+
+  ImGui::TextColored(status_color, "[%s]", status_text);
+
+  if (!last_error_.empty()) {
+    ImGui::SameLine();
+    ImGui::TextColored(ImVec4(0.9f, 0.4f, 0.4f, 1.0f), "%s",
+                       last_error_.c_str());
+  }
+
+  ImGui::Separator();
+
+  // Main content
+  if (state.status == TrainingStatus::kIdle &&
+      state.loss_history.empty()) {
+    ImGui::TextDisabled("No active training detected.");
+    ImGui::TextDisabled("Mount point: %s",
+                        monitor_.GetConfig().windows_mount_path.c_str());
+    return;
+  }
+
+  // Top section: Status and Progress
+  RenderStatusCard();
+
+  ImGui::Spacing();
+
+  // Loss curve chart
+  RenderLossCurve();
+
+  ImGui::Spacing();
+
+  // Metrics grid
+  RenderMetricsGrid();
+
+  // Source info
+  RenderSourceInfo();
+}
+
+void TrainingDashboardWidget::RenderStatusCard() {
+  const auto& state = monitor_.GetState();
+
+  // Model name
+  if (!state.model_name.empty()) {
+    ImGui::Text("Model: %s", state.model_name.c_str());
+  }
+
+  // Progress bar
+  ImGui::Text("Progress:");
+  ImGui::SameLine();
+
+  float progress = state.progress_percent / 100.0f;
+  char overlay[32];
+  std::snprintf(overlay, sizeof(overlay), "%.1f%% (%d/%d)",
+                state.progress_percent, state.current_step, state.total_steps);
+
+  ImGui::ProgressBar(progress, ImVec2(-1, 0), overlay);
+
+  // Epoch info
+  ImGui::Text("Epoch %d/%d | Step %d/%d", state.current_epoch,
+              state.total_epochs, state.current_step, state.total_steps);
+}
+
+void TrainingDashboardWidget::RenderLossCurve() {
+  const auto& state = monitor_.GetState();
+
+  if (state.loss_history.empty()) {
+    ImGui::TextDisabled("No loss data available");
+    return;
+  }
+
+  // Prepare data for ImPlot
+  std::vector<float> steps, losses, eval_losses;
+  bool has_eval = false;
+
+  for (const auto& point : state.loss_history) {
+    steps.push_back(static_cast<float>(point.step));
+    losses.push_back(point.loss);
+    if (point.eval_loss > 0.0f) {
+      eval_losses.push_back(point.eval_loss);
+      has_eval = true;
+    } else {
+      eval_losses.push_back(point.loss);  // Fallback
+    }
+  }
+
+  float height = 200.0f;
+  if (ImPlot::BeginPlot("Training Loss", ImVec2(-1, height))) {
+    ImPlot::SetupAxes("Step", "Loss");
+    ImPlot::SetupAxisLimits(ImAxis_Y1, 0, *std::max_element(losses.begin(), losses.end()) * 1.1, ImPlotCond_Always);
+
+    ImPlot::SetNextLineStyle(ImVec4(0.4f, 0.7f, 1.0f, 1.0f), 2.0f);
+    ImPlot::PlotLine("Train Loss", steps.data(), losses.data(),
+                     static_cast<int>(steps.size()));
+
+    if (has_eval) {
+      ImPlot::SetNextLineStyle(ImVec4(0.9f, 0.5f, 0.2f, 1.0f), 2.0f);
+      ImPlot::PlotLine("Eval Loss", steps.data(), eval_losses.data(),
+                       static_cast<int>(steps.size()));
+    }
+
+    // Mark best loss
+    if (state.best_step > 0) {
+      float best_x = static_cast<float>(state.best_step);
+      float best_y = state.best_loss;
+      ImPlot::SetNextMarkerStyle(ImPlotMarker_Diamond, 8.0f,
+                                  ImVec4(0.2f, 0.9f, 0.3f, 1.0f), 2.0f);
+      ImPlot::PlotScatter("Best", &best_x, &best_y, 1);
+    }
+
+    ImPlot::EndPlot();
+  }
+}
+
+void TrainingDashboardWidget::RenderMetricsGrid() {
+  const auto& state = monitor_.GetState();
+
+  if (ImGui::BeginTable("MetricsGrid", 4,
+                        ImGuiTableFlags_Borders | ImGuiTableFlags_RowBg)) {
+    ImGui::TableSetupColumn("Metric");
+    ImGui::TableSetupColumn("Value");
+    ImGui::TableSetupColumn("Metric");
+    ImGui::TableSetupColumn("Value");
+    ImGui::TableHeadersRow();
+
+    // Row 1: Current Loss | Best Loss
+    ImGui::TableNextColumn();
+    ImGui::TextDisabled("Current Loss");
+    ImGui::TableNextColumn();
+    ImGui::Text("%.4f", state.current_loss);
+    ImGui::TableNextColumn();
+    ImGui::TextDisabled("Best Loss");
+    ImGui::TableNextColumn();
+    ImGui::TextColored(ImVec4(0.3f, 0.9f, 0.3f, 1.0f), "%.4f @ %d",
+                       state.best_loss, state.best_step);
+
+    // Row 2: Eval Loss | Perplexity
+    ImGui::TableNextColumn();
+    ImGui::TextDisabled("Eval Loss");
+    ImGui::TableNextColumn();
+    if (state.eval_loss.has_value()) {
+      ImGui::Text("%.4f", state.eval_loss.value());
+    } else {
+      ImGui::TextDisabled("N/A");
+    }
+    ImGui::TableNextColumn();
+    ImGui::TextDisabled("Perplexity");
+    ImGui::TableNextColumn();
+    if (state.perplexity.has_value()) {
+      ImGui::Text("%.2f", state.perplexity.value());
+    } else {
+      ImGui::TextDisabled("N/A");
+    }
+
+    // Row 3: GPU | ETA
+    ImGui::TableNextColumn();
+    ImGui::TextDisabled("Device");
+    ImGui::TableNextColumn();
+    ImGui::Text("%s", state.device.empty() ? "GPU" : state.device.c_str());
+    ImGui::TableNextColumn();
+    ImGui::TextDisabled("ETA");
+    ImGui::TableNextColumn();
+    if (state.estimated_remaining_minutes > 0) {
+      int hours = state.estimated_remaining_minutes / 60;
+      int mins = state.estimated_remaining_minutes % 60;
+      if (hours > 0) {
+        ImGui::Text("%dh %dm", hours, mins);
+      } else {
+        ImGui::Text("%dm", mins);
+      }
+    } else {
+      ImGui::TextDisabled("--");
+    }
+
+    ImGui::EndTable();
+  }
+}
+
+void TrainingDashboardWidget::RenderSourceInfo() {
+  const auto& state = monitor_.GetState();
+
+  ImGui::Spacing();
+  ImGui::TextDisabled("Source: %s (%s)",
+                      state.source_location.empty() ? "local"
+                                                    : state.source_location.c_str(),
+                      state.is_remote ? "remote" : "local");
+
+  if (!state.source_path.empty()) {
+    ImGui::TextDisabled("Path: %s", state.source_path.c_str());
+  }
+}
+
+void RenderTrainingDashboardWindow(TrainingDashboardWidget& widget,
+                                    bool* open) {
+  if (!open || !*open) return;
+
+  ImGui::SetNextWindowSize(ImVec2(700, 500), ImGuiCond_FirstUseEver);
+
+  if (!ImGui::Begin("Training Monitor", open)) {
+    ImGui::End();
+    return;
+  }
+
+  widget.Render();
+
+  ImGui::End();
+}
+
+}  // namespace ui
+}  // namespace studio
+}  // namespace afs

apps/studio/src/ui/components/training_dashboard.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include "core/training_monitor.h"
+
+#include <string>
+
+namespace afs {
+namespace studio {
+namespace ui {
+
+// Training dashboard widget for real-time training monitoring
+class TrainingDashboardWidget {
+ public:
+  TrainingDashboardWidget();
+
+  // Render the widget
+  void Render();
+
+  // Manual refresh
+  void Refresh();
+
+  // Get training monitor
+  TrainingMonitor& GetMonitor() { return monitor_; }
+
+ private:
+  void RenderStatusCard();
+  void RenderProgressBar();
+  void RenderLossCurve();
+  void RenderMetricsGrid();
+  void RenderSourceInfo();
+
+  TrainingMonitor monitor_;
+  bool auto_refresh_ = true;
+  std::string last_error_;
+};
+
+// Render as standalone window
+void RenderTrainingDashboardWindow(TrainingDashboardWidget& widget, bool* open);
+
+}  // namespace ui
+}  // namespace studio
+}  // namespace afs

apps/studio/src/ui/core.cc

@@ -0,0 +1,291 @@
+#include "core.h"
+#include <implot.h>
+#include <algorithm>
+#include <vector>
+#include "../icons.h"
+
+namespace afs {
+namespace viz {
+namespace ui {
+
+void HelpMarker(const char* desc) {
+  ImGui::TextDisabled("(?)");
+  if (ImGui::IsItemHovered()) {
+    ImGui::BeginTooltip();
+    ImGui::PushTextWrapPos(ImGui::GetFontSize() * 35.0f);
+    ImGui::TextUnformatted(desc);
+    ImGui::PopTextWrapPos();
+    ImGui::EndTooltip();
+  }
+}
+
+void ApplyPremiumPlotStyles(const char* plot_id, AppState& state) {
+  // Custom theme-like styling for AFS
+  ImPlot::PushStyleVar(ImPlotStyleVar_FillAlpha, 0.18f);
+  ImPlot::PushStyleVar(ImPlotStyleVar_LineWeight, state.line_weight);
+  ImPlot::PushStyleVar(ImPlotStyleVar_MarkerSize, state.show_plot_markers ? 5.5f : 0.0f);
+  ImPlot::PushStyleVar(ImPlotStyleVar_MarkerWeight, 1.4f);
+  ImPlot::PushStyleVar(ImPlotStyleVar_PlotPadding, ImVec2(14, 14));
+  ImPlot::PushStyleVar(ImPlotStyleVar_LabelPadding, ImVec2(6, 4));
+  
+  // Standard grid line color (subtle)
+  ImPlot::PushStyleColor(ImPlotCol_AxisGrid, ImVec4(1, 1, 1, 0.12f));
+  ImPlot::PushStyleColor(ImPlotCol_Line, GetThemeColor(ImGuiCol_PlotLines, state.current_theme));
+}
+
+void RenderChartHeader(PlotKind kind, const char* title, const char* desc, AppState& state) {
+  ImGui::PushStyleColor(ImGuiCol_Text, GetThemeColor(ImGuiCol_PlotLines, state.current_theme));
+  ImGui::Text("%s", title);
+  ImGui::PopStyleColor();
+  if (desc && desc[0] != '\0') {
+    ImGui::SameLine();
+    HelpMarker(desc);
+  }
+
+  if (kind != PlotKind::None) {
+    float button_size = ImGui::GetFrameHeight();
+    ImGui::SameLine();
+    float right_edge = ImGui::GetWindowContentRegionMax().x - button_size;
+    ImGui::SetCursorPosX(right_edge);
+    ImGui::PushID(static_cast<int>(kind));
+    const char* icon = state.is_rendering_expanded_plot ? ICON_MD_CLOSE_FULLSCREEN
+                                                   : ICON_MD_OPEN_IN_FULL;
+    if (ImGui::Button(icon, ImVec2(button_size, button_size))) {
+      if (state.is_rendering_expanded_plot) {
+        state.expanded_plot = PlotKind::None;
+      } else {
+        state.expanded_plot = kind;
+      }
+    }
+    if (ImGui::IsItemHovered()) {
+      ImGui::SetTooltip(state.is_rendering_expanded_plot ? "Exit full screen"
+                                                     : "Expand to full screen");
+    }
+
+    // New: Pop-out button (GIMP style)
+    ImGui::SameLine();
+    ImGui::SetCursorPosX(right_edge - button_size - 4);
+    if (ImGui::Button(ICON_MD_OPEN_IN_NEW, ImVec2(button_size, button_size))) {
+      bool found = false;
+      for (auto f : state.active_floaters) {
+        if (f == kind) { found = true; break; }
+      }
+      if (!found) state.active_floaters.push_back(kind);
+    }
+    if (ImGui::IsItemHovered()) ImGui::SetTooltip("Pop out to standalone window");
+
+    // Update inspector context if clicked
+    if (ImGui::IsItemClicked()) {
+        state.inspector_context = kind;
+    }
+
+    ImGui::PopID();
+  }
+
+  ImGui::Dummy(ImVec2(0.0f, 4.0f));
+}
+
+void HandlePlotContextMenu(PlotKind kind, AppState& state) {
+  if (kind == PlotKind::None) return;
+  ImGui::PushID(static_cast<int>(kind));
+  if (ImPlot::IsPlotHovered() && ImGui::IsMouseClicked(ImGuiMouseButton_Right)) {
+    ImGui::OpenPopup("PlotContext");
+  }
+    if (ImGui::BeginPopup("PlotContext")) {
+    if (state.expanded_plot == kind) {
+      if (ImGui::MenuItem(ICON_MD_FULLSCREEN_EXIT " Exit Full Screen")) {
+        state.expanded_plot = PlotKind::None;
+      }
+    } else if (kind != PlotKind::None) {
+      if (ImGui::MenuItem(ICON_MD_FULLSCREEN " Expand to Full Screen")) {
+        state.expanded_plot = kind;
+      }
+    }
+    
+    if (state.focus_chart == kind) {
+        if (ImGui::MenuItem(ICON_MD_REMOVE_CIRCLE_OUTLINE " Remove from Focus")) {
+            state.focus_chart = PlotKind::None;
+        }
+    } else if (kind != PlotKind::None) {
+        if (ImGui::MenuItem(ICON_MD_CENTER_FOCUS_STRONG " Focus on Dashboard")) {
+            state.focus_chart = kind;
+            state.current_workspace = Workspace::Dashboard;
+        }
+    }
+
+    if (ImGui::MenuItem(ICON_MD_OPEN_IN_NEW " Pop out to Window")) {
+        bool already_open = false;
+        for (auto k : state.active_floaters) { if (k == kind) { already_open = true; break; } }
+        if (!already_open) state.active_floaters.push_back(kind);
+    }
+
+    if (ImGui::MenuItem("Reset View")) {
+      ImPlot::SetNextAxesToFit();
+    }
+
+    ImGui::Separator();
+
+    if (ImGui::BeginMenu("Settings")) {
+      ImGui::Checkbox("Legends", &state.show_plot_legends);
+      ImGui::Checkbox("Markers", &state.show_plot_markers);
+      ImGui::Checkbox("Interaction", &state.enable_plot_interaction);
+      ImGui::EndMenu();
+    }
+
+    ImGui::EndPopup();
+  }
+  ImGui::PopID();
+}
+
+ImVec4 GetThemeColor(ImGuiCol col, ThemeProfile theme) {
+  switch (theme) {
+    case ThemeProfile::Amber:
+      if (col == ImGuiCol_Text) return ImVec4(1.0f, 0.7f, 0.0f, 1.0f);
+      if (col == ImGuiCol_Header) return ImVec4(1.0f, 0.6f, 0.0f, 0.4f);
+      if (col == ImGuiCol_PlotLines) return ImVec4(1.0f, 0.8f, 0.0f, 1.0f);
+      break;
+    case ThemeProfile::Emerald:
+      if (col == ImGuiCol_Text) return ImVec4(0.0f, 1.0f, 0.4f, 1.0f);
+      if (col == ImGuiCol_Header) return ImVec4(0.0f, 0.8f, 0.3f, 0.4f);
+      if (col == ImGuiCol_PlotLines) return ImVec4(0.2f, 1.0f, 0.5f, 1.0f);
+      break;
+    case ThemeProfile::Cyberpunk:
+      if (col == ImGuiCol_Text) return ImVec4(1.0f, 0.0f, 0.5f, 1.0f);
+      if (col == ImGuiCol_Header) return ImVec4(0.1f, 0.0f, 0.2f, 0.4f);
+      if (col == ImGuiCol_PlotLines) return ImVec4(0.0f, 1.0f, 1.0f, 1.0f);
+      break;
+    case ThemeProfile::Monochrome:
+      if (col == ImGuiCol_Text) return ImVec4(0.8f, 0.8f, 0.8f, 1.0f);
+      if (col == ImGuiCol_Header) return ImVec4(0.2f, 0.2f, 0.2f, 0.4f);
+      if (col == ImGuiCol_PlotLines) return ImVec4(1.0f, 1.0f, 1.0f, 1.0f);
+      break;
+    case ThemeProfile::Solarized:
+      if (col == ImGuiCol_Text) return ImVec4(0.52f, 0.60f, 0.00f, 1.0f);
+      if (col == ImGuiCol_Header) return ImVec4(0.03f, 0.21f, 0.26f, 0.4f);
+      if (col == ImGuiCol_PlotLines) return ImVec4(0.15f, 0.45f, 0.55f, 1.0f);
+      break;
+    case ThemeProfile::Nord:
+      if (col == ImGuiCol_Text) return ImVec4(0.56f, 0.80f, 0.71f, 1.0f);
+      if (col == ImGuiCol_Header) return ImVec4(0.18f, 0.20f, 0.25f, 0.4f);
+      if (col == ImGuiCol_PlotLines) return ImVec4(0.53f, 0.75f, 0.82f, 1.0f);
+      break;
+    case ThemeProfile::Dracula:
+      if (col == ImGuiCol_Text) return ImVec4(1.00f, 0.47f, 0.77f, 1.0f);
+      if (col == ImGuiCol_Header) return ImVec4(0.16f, 0.17f, 0.24f, 0.4f);
+      if (col == ImGuiCol_PlotLines) return ImVec4(0.74f, 0.57f, 0.97f, 1.0f);
+      break;
+    default: // Cobalt
+      if (col == ImGuiCol_PlotLines) return ImVec4(0.4f, 0.8f, 1.0f, 1.0f);
+      break;
+  }
+  return ImGui::GetStyleColorVec4(col);
+}
+
+ImVec4 GetSeriesColor(int index) {
+  static const ImVec4 palette[] = {
+      ImVec4(0.20f, 0.65f, 0.96f, 1.0f),
+      ImVec4(0.96f, 0.54f, 0.24f, 1.0f),
+      ImVec4(0.90f, 0.28f, 0.46f, 1.0f),
+      ImVec4(0.38f, 0.88f, 0.46f, 1.0f),
+      ImVec4(0.86f, 0.80f, 0.26f, 1.0f),
+      ImVec4(0.62f, 0.38f, 0.96f, 1.0f),
+      ImVec4(0.20f, 0.86f, 0.82f, 1.0f),
+      ImVec4(0.92f, 0.34f, 0.22f, 1.0f),
+      ImVec4(0.64f, 0.72f, 0.98f, 1.0f),
+      ImVec4(0.75f, 0.56f, 0.36f, 1.0f),
+      ImVec4(0.95f, 0.78f, 0.36f, 1.0f),
+      ImVec4(0.42f, 0.74f, 0.90f, 1.0f),
+  };
+
+  const int count = static_cast<int>(sizeof(palette) / sizeof(palette[0]));
+  int safe_index = index % count;
+  if (safe_index < 0) safe_index += count;
+  return palette[safe_index];
+}
+
+ImVec4 GetStepColor(float step, AppState& state) {
+  ImVec4 base = GetThemeColor(ImGuiCol_PlotLines, state.current_theme);
+  float alpha = 0.2f + 0.8f * step;
+  return ImVec4(base.x, base.y, base.z, alpha);
+}
+
+int GetPlotAxisFlags(const AppState& state) {
+  int flags = ImPlotAxisFlags_None;
+  if (!state.enable_plot_interaction) {
+    flags |= ImPlotAxisFlags_Lock;
+  }
+  return flags;
+}
+
+ImPlotFlags BasePlotFlags(const AppState& state, bool allow_legend) {
+  ImPlotFlags flags = ImPlotFlags_NoMenus;
+  if (!allow_legend || !state.show_plot_legends) {
+    flags |= ImPlotFlags_NoLegend;
+  }
+  return flags;
+}
+
+const std::vector<PlotOption>& PlotOptions() {
+  static const std::vector<PlotOption> options = {
+      {PlotKind::QualityTrends, "Quality Trends"},
+      {PlotKind::GeneratorEfficiency, "Generator Efficiency"},
+      {PlotKind::CoverageDensity, "Coverage Density"},
+      {PlotKind::TrainingLoss, "Training Loss (Top Runs)"},
+      {PlotKind::LossVsSamples, "Loss vs Samples"},
+      {PlotKind::DomainCoverage, "Domain Coverage"},
+      {PlotKind::EmbeddingQuality, "Embedding Quality"},
+      {PlotKind::AgentThroughput, "Agent Throughput"},
+      {PlotKind::MissionQueue, "Mission Queue"},
+      {PlotKind::QualityDirection, "Quality Direction"},
+      {PlotKind::GeneratorMix, "Generator Mix"},
+      {PlotKind::EmbeddingDensity, "Embedding Density"},
+      {PlotKind::AgentUtilization, "Agent Utilization"},
+      {PlotKind::MissionProgress, "Mission Progress"},
+      {PlotKind::EvalMetrics, "Eval Metrics"},
+      {PlotKind::Rejections, "Rejection Reasons"},
+      {PlotKind::KnowledgeGraph, "Knowledge Graph"},
+      {PlotKind::LatentSpace, "Latent Space"},
+      {PlotKind::Effectiveness, "Domain Effectiveness"},
+      {PlotKind::Thresholds, "Threshold Sensitivity"},
+      {PlotKind::MountsStatus, "Local Mounts Status"},
+  };
+  return options;
+}
+
+int PlotKindToIndex(PlotKind kind) {
+  const auto& options = PlotOptions();
+  for (size_t i = 0; i < options.size(); ++i) {
+    if (options[i].kind == kind) return static_cast<int>(i);
+  }
+  return 0;
+}
+
+PlotKind IndexToPlotKind(int index) {
+  const auto& options = PlotOptions();
+  if (index < 0 || static_cast<size_t>(index) >= options.size()) {
+    return options.front().kind;
+  }
+  return options[index].kind;
+}
+
+float Clamp01(float value) {
+  return std::max(0.0f, std::min(1.0f, value));
+}
+
+void AppendLog(AppState& state, const std::string& agent, const std::string& message, const std::string& kind) {
+  if (message.empty()) return;
+  constexpr size_t kMaxLogs = 300;
+  state.logs.push_back(LogEntry{agent, message, kind});
+  if (state.logs.size() > kMaxLogs) state.logs.pop_front();
+}
+
+AgentState* FindAgentByName(std::vector<AgentState>& agents, const std::string& name) {
+  for (auto& agent : agents) {
+    if (agent.name == name) return &agent;
+  }
+  return nullptr;
+}
+
+} // namespace ui
+} // namespace viz
+} // namespace afs

apps/studio/src/ui/core.h

@@ -0,0 +1,41 @@
+#pragma once
+
+#include <imgui.h>
+#include <implot.h>
+#include "../models/state.h"
+
+namespace afs {
+namespace viz {
+
+namespace ui {
+
+// Utility Functions
+void HelpMarker(const char* desc);
+void ApplyPremiumPlotStyles(const char* plot_id, AppState& state);
+void RenderChartHeader(PlotKind kind, const char* title, const char* desc, AppState& state);
+void HandlePlotContextMenu(PlotKind kind, AppState& state);
+float Clamp01(float value);
+void AppendLog(AppState& state, const std::string& agent, const std::string& message, const std::string& kind);
+AgentState* FindAgentByName(std::vector<AgentState>& agents, const std::string& name);
+
+// Theme Helpers
+ImVec4 GetThemeColor(ImGuiCol col, ThemeProfile theme);
+ImVec4 GetSeriesColor(int index);
+ImVec4 GetStepColor(float step, AppState& state); 
+ImVec4 GetStepColor(float step, AppState& state); 
+int GetPlotAxisFlags(const AppState& state);
+ImPlotFlags BasePlotFlags(const AppState& state, bool allow_legend);
+
+// Grid Helpers
+struct PlotOption {
+  PlotKind kind;
+  const char* label;
+};
+
+const std::vector<PlotOption>& PlotOptions();
+int PlotKindToIndex(PlotKind kind);
+PlotKind IndexToPlotKind(int index);
+
+} // namespace ui
+} // namespace viz
+} // namespace afs

apps/studio/src/ui/panels/chat_panel.cc

@@ -0,0 +1,234 @@
+#include "chat_panel.h"
+#include "../core.h"
+#include "../../icons.h"
+#include <imgui.h>
+#include <vector>
+#include <mutex>
+
+namespace afs::viz::ui {
+
+namespace {
+  // Streaming response state (shared between callbacks and render)
+  std::mutex streaming_mutex;
+  std::string streaming_response;
+  bool is_streaming = false;
+}
+
+void RenderChatPanel(AppState& state,
+                     LlamaClient& llama_client,
+                     std::function<void(const std::string&, const std::string&, const std::string&)> log_callback) {
+  // Toolbar
+  ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(4, 4));
+
+  // Status indicator
+  bool is_ready = llama_client.IsReady();
+  bool is_generating = llama_client.IsGenerating();
+
+  if (is_generating) {
+    ImGui::TextColored(ImVec4(1.0f, 0.8f, 0.2f, 1.0f), ICON_MD_PENDING " Generating...");
+  } else if (is_ready) {
+    ImGui::TextColored(ImVec4(0.2f, 1.0f, 0.4f, 1.0f), ICON_MD_CHECK_CIRCLE " Ready");
+  } else {
+    ImGui::TextColored(ImVec4(1.0f, 0.4f, 0.4f, 1.0f), ICON_MD_ERROR " Not Connected");
+  }
+
+  ImGui::SameLine();
+  if (ImGui::Button(ICON_MD_REFRESH " Check")) {
+    llama_client.CheckHealth();
+  }
+
+  ImGui::SameLine();
+  if (ImGui::Button(ICON_MD_DELETE " Clear")) {
+    state.logs.clear();
+    llama_client.ClearHistory();
+    std::lock_guard<std::mutex> lock(streaming_mutex);
+    streaming_response.clear();
+    is_streaming = false;
+  }
+
+  ImGui::SameLine();
+  if (is_generating && ImGui::Button(ICON_MD_STOP " Stop")) {
+    llama_client.StopGeneration();
+  }
+
+  // Config section (collapsible)
+  ImGui::SameLine();
+  if (ImGui::CollapsingHeader(ICON_MD_SETTINGS " Config", ImGuiTreeNodeFlags_None)) {
+    LlamaConfig config = llama_client.GetConfig();
+    bool config_changed = false;
+
+    ImGui::SetNextItemWidth(300);
+    static char model_path[512] = "";
+    if (model_path[0] == '\0' && !config.model_path.empty()) {
+      strncpy(model_path, config.model_path.c_str(), sizeof(model_path) - 1);
+    }
+    if (ImGui::InputText("Model Path", model_path, sizeof(model_path))) {
+      config.model_path = model_path;
+      config_changed = true;
+    }
+
+    ImGui::SetNextItemWidth(200);
+    static char rpc_servers[256] = "100.104.53.21:50052";
+    if (ImGui::InputText("RPC Servers", rpc_servers, sizeof(rpc_servers))) {
+      config.rpc_servers = rpc_servers;
+      config_changed = true;
+    }
+
+    if (ImGui::Checkbox("Use RPC", &config.use_rpc)) {
+      config_changed = true;
+    }
+
+    ImGui::SetNextItemWidth(100);
+    if (ImGui::SliderFloat("Temperature", &config.temperature, 0.0f, 2.0f)) {
+      config_changed = true;
+    }
+
+    ImGui::SetNextItemWidth(100);
+    if (ImGui::SliderInt("Max Tokens", &config.n_predict, 32, 2048)) {
+      config_changed = true;
+    }
+
+    if (config_changed) {
+      llama_client.SetConfig(config);
+    }
+  }
+
+  ImGui::PopStyleVar();
+  ImGui::Separator();
+
+  // Chat Area
+  float footer_height = 50.0f;
+  ImVec2 chat_size = ImVec2(0, ImGui::GetContentRegionAvail().y - footer_height);
+
+  ImGui::BeginChild("ChatHistory", chat_size, true, ImGuiWindowFlags_AlwaysVerticalScrollbar);
+
+  // Display history from LlamaClient
+  const auto& history = llama_client.GetHistory();
+  for (const auto& msg : history) {
+    ImVec4 color;
+    const char* icon;
+
+    if (msg.role == "user") {
+      color = ImVec4(0.4f, 0.8f, 1.0f, 1.0f);
+      icon = ICON_MD_PERSON;
+    } else if (msg.role == "assistant") {
+      color = ImVec4(0.4f, 1.0f, 0.6f, 1.0f);
+      icon = ICON_MD_SMART_TOY;
+    } else {
+      color = ImVec4(1.0f, 0.6f, 0.2f, 1.0f);
+      icon = ICON_MD_INFO;
+    }
+
+    ImGui::TextColored(color, "%s %s", icon, msg.role.c_str());
+    ImGui::Indent();
+    ImGui::PushTextWrapPos(ImGui::GetContentRegionAvail().x);
+    ImGui::TextUnformatted(msg.content.c_str());
+    ImGui::PopTextWrapPos();
+    ImGui::Unindent();
+    ImGui::Spacing();
+    ImGui::Separator();
+    ImGui::Spacing();
+  }
+
+  // Show streaming response
+  {
+    std::lock_guard<std::mutex> lock(streaming_mutex);
+    if (is_streaming && !streaming_response.empty()) {
+      ImGui::TextColored(ImVec4(0.4f, 1.0f, 0.6f, 1.0f), ICON_MD_SMART_TOY " assistant");
+      ImGui::Indent();
+      ImGui::PushTextWrapPos(ImGui::GetContentRegionAvail().x);
+      ImGui::TextUnformatted(streaming_response.c_str());
+      ImGui::PopTextWrapPos();
+
+      // Blinking cursor
+      static float blink_timer = 0.0f;
+      blink_timer += ImGui::GetIO().DeltaTime;
+      if (fmod(blink_timer, 1.0f) < 0.5f) {
+        ImGui::SameLine(0, 0);
+        ImGui::Text("_");
+      }
+
+      ImGui::Unindent();
+    }
+  }
+
+  // Auto-scroll
+  if (ImGui::GetScrollY() >= ImGui::GetScrollMaxY() - 50) {
+    ImGui::SetScrollHereY(1.0f);
+  }
+
+  ImGui::EndChild();
+
+  // Input Area
+  ImGui::Separator();
+  ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(8, 8));
+
+  float send_button_width = 80.0f;
+  ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x - send_button_width - 10);
+
+  bool send_triggered = false;
+  if (ImGui::InputTextWithHint("##ChatInput", "Type a message...",
+                                state.chat_input.data(), state.chat_input.size(),
+                                ImGuiInputTextFlags_EnterReturnsTrue)) {
+    send_triggered = true;
+  }
+
+  ImGui::SameLine();
+  bool can_send = is_ready && !is_generating && state.chat_input[0] != '\0';
+
+  if (!can_send) {
+    ImGui::BeginDisabled();
+  }
+
+  if (ImGui::Button(ICON_MD_SEND " Send", ImVec2(send_button_width, 0)) || send_triggered) {
+    if (can_send) {
+      std::string message(state.chat_input.data());
+
+      // Log user message
+      if (log_callback) {
+        log_callback("user", message, "user");
+      }
+
+      // Clear streaming state
+      {
+        std::lock_guard<std::mutex> lock(streaming_mutex);
+        streaming_response.clear();
+        is_streaming = true;
+      }
+
+      // Send to LlamaClient
+      llama_client.SendMessage(
+        message,
+        // Token callback - accumulate streaming response
+        [](const std::string& token) {
+          std::lock_guard<std::mutex> lock(streaming_mutex);
+          streaming_response += token;
+        },
+        // Completion callback
+        [log_callback](bool success, const std::string& error) {
+          std::lock_guard<std::mutex> lock(streaming_mutex);
+          is_streaming = false;
+
+          if (!success && log_callback) {
+            log_callback("system", "Error: " + error, "system");
+          }
+        }
+      );
+
+      // Clear input
+      state.chat_input[0] = '\0';
+      ImGui::SetKeyboardFocusHere(-1);
+    }
+  }
+
+  if (!can_send) {
+    ImGui::EndDisabled();
+  }
+
+  ImGui::PopStyleVar();
+
+  // Status bar
+  ImGui::TextDisabled("%s", llama_client.GetStatusMessage().c_str());
+}
+
+} // namespace afs::viz::ui

apps/studio/src/ui/panels/chat_panel.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include "../../models/state.h"
+#include "../../core/llama_client.h"
+#include <functional>
+#include <string>
+
+namespace afs::viz::ui {
+
+// A clean, log-based chat interface with llama.cpp integration.
+void RenderChatPanel(AppState& state,
+                     LlamaClient& llama_client,
+                     std::function<void(const std::string&, const std::string&, const std::string&)> log_callback);
+
+} // namespace afs::viz::ui

apps/studio/src/ui/shortcuts.cc

@@ -0,0 +1,625 @@
+#include "shortcuts.h"
+
+#include <algorithm>
+#include <cctype>
+#include <cstdlib>
+#include <filesystem>
+#include <fstream>
+#include <sstream>
+#include <string>
+
+namespace afs {
+namespace viz {
+namespace ui {
+
+namespace {
+
+const std::array<ActionDefinition, kActionCount>& ActionDefinitions() {
+  static const std::array<ActionDefinition, kActionCount> definitions = {
+      ActionDefinition{ActionId::Refresh, "refresh", "Refresh Data",
+                       "Reload data from all configured sources.",
+                       Shortcut{ImGuiKey_F5, false, false, false, false}},
+      ActionDefinition{ActionId::Quit, "quit", "Quit",
+                       "Close the visualization application.",
+                       Shortcut{ImGuiKey_Q, true, false, false, false}},
+      ActionDefinition{ActionId::ToggleInspector, "toggle_inspector",
+                       "Inspector Panel",
+                       "Show or hide the Inspector panel.",
+                       Shortcut{ImGuiKey_I, true, false, false, false}},
+      ActionDefinition{ActionId::ToggleDatasetPanel, "toggle_dataset",
+                       "Dataset Panel",
+                       "Show or hide the Dataset panel.",
+                       Shortcut{ImGuiKey_D, true, true, false, false}},
+      ActionDefinition{ActionId::ToggleSystemsPanel, "toggle_systems",
+                       "Systems Panel",
+                       "Show or hide the Systems panel.",
+                       Shortcut{ImGuiKey_S, true, true, false, false}},
+      ActionDefinition{ActionId::ToggleStatusBar, "toggle_status",
+                       "Status Strip",
+                       "Show or hide the status strip.",
+                       Shortcut{ImGuiKey_B, true, true, false, false}},
+      ActionDefinition{ActionId::ToggleControls, "toggle_controls",
+                       "Sidebar Controls",
+                       "Show or hide the sidebar controls.",
+                       Shortcut{ImGuiKey_C, true, true, false, false}},
+      ActionDefinition{ActionId::ToggleAutoRefresh, "toggle_auto_refresh",
+                       "Auto Refresh",
+                       "Enable or disable auto refresh of data.",
+                       Shortcut{ImGuiKey_A, true, true, false, false}},
+      ActionDefinition{ActionId::ToggleSimulation, "toggle_simulation",
+                       "Simulate Activity",
+                       "Enable or disable simulated activity streams.",
+                       Shortcut{ImGuiKey_Y, true, true, false, false}},
+      ActionDefinition{ActionId::ToggleCompactUI, "toggle_compact_ui",
+                       "Compact Charts",
+                       "Toggle compact chart layout.",
+                       Shortcut{ImGuiKey_U, true, true, false, false}},
+      ActionDefinition{ActionId::ToggleLockLayout, "toggle_lock_layout",
+                       "Lock Layout",
+                       "Lock or unlock the docking layout.",
+                       Shortcut{ImGuiKey_L, true, true, false, false}},
+      ActionDefinition{ActionId::ResetLayout, "reset_layout", "Reset Layout",
+                       "Reset the docking layout to defaults.",
+                       Shortcut{ImGuiKey_R, true, true, true, false}},
+      ActionDefinition{ActionId::ToggleSampleReview, "toggle_sample_review",
+                       "Sample Review",
+                       "Open the sample review window.",
+                       Shortcut{ImGuiKey_R, true, true, false, false}},
+      ActionDefinition{ActionId::ToggleShortcutsWindow, "toggle_shortcuts",
+                       "Keyboard Shortcuts",
+                       "Open the shortcuts editor.",
+                       Shortcut{ImGuiKey_Slash, true, false, false, false}},
+      ActionDefinition{ActionId::ToggleDemoWindow, "toggle_demo",
+                       "ImGui Demo",
+                       "Toggle the ImGui demo window.",
+                       Shortcut{ImGuiKey_M, true, true, false, false}},
+      ActionDefinition{ActionId::WorkspaceDashboard, "workspace_dashboard",
+                       "Workspace: Dashboard",
+                       "Switch to the Dashboard workspace.",
+                       Shortcut{ImGuiKey_1, true, false, false, false}},
+      ActionDefinition{ActionId::WorkspaceAnalysis, "workspace_analysis",
+                       "Workspace: Analysis",
+                       "Switch to the Analysis workspace.",
+                       Shortcut{ImGuiKey_2, true, false, false, false}},
+      ActionDefinition{ActionId::WorkspaceOptimization,
+                       "workspace_optimization",
+                       "Workspace: Optimization",
+                       "Switch to the Optimization workspace.",
+                       Shortcut{ImGuiKey_3, true, false, false, false}},
+      ActionDefinition{ActionId::WorkspaceSystems, "workspace_systems",
+                       "Workspace: Systems",
+                       "Switch to the Systems workspace.",
+                       Shortcut{ImGuiKey_4, true, false, false, false}},
+      ActionDefinition{ActionId::WorkspaceCustom, "workspace_custom",
+                       "Workspace: Custom Grid",
+                       "Switch to the Custom Grid workspace.",
+                       Shortcut{ImGuiKey_5, true, false, false, false}},
+      ActionDefinition{ActionId::WorkspaceChat, "workspace_chat",
+                       "Workspace: Chat",
+                       "Switch to the Chat workspace.",
+                       Shortcut{ImGuiKey_6, true, false, false, false}},
+      ActionDefinition{ActionId::WorkspaceTraining, "workspace_training",
+                       "Workspace: Training Hub",
+                       "Switch to the Training Hub workspace.",
+                       Shortcut{ImGuiKey_7, true, false, false, false}},
+      ActionDefinition{ActionId::WorkspaceContext, "workspace_context",
+                       "Workspace: Context Broker",
+                       "Switch to the Context Broker workspace.",
+                       Shortcut{ImGuiKey_8, true, false, false, false}},
+      // Graph View Navigation
+      ActionDefinition{ActionId::ToggleGraphBrowser, "toggle_graph_browser",
+                       "Toggle Graph Browser", "Show/hide graph browser sidebar",
+                       Shortcut{ImGuiKey_B, true, false, false, false}},
+      ActionDefinition{ActionId::ToggleCompanionPanels, "toggle_companion_panels",
+                       "Toggle Companion Panels", "Show/hide companion panels sidebar",
+                       Shortcut{ImGuiKey_Backslash, true, false, false, false}},
+      ActionDefinition{ActionId::NavigateBack, "navigate_back",
+                       "Navigate Back", "Go to previous graph in history",
+                       Shortcut{ImGuiKey_LeftArrow, false, false, true, false}},
+      ActionDefinition{ActionId::NavigateForward, "navigate_forward",
+                       "Navigate Forward", "Go to next graph in history",
+                       Shortcut{ImGuiKey_RightArrow, false, false, true, false}},
+      ActionDefinition{ActionId::BookmarkGraph, "bookmark_graph",
+                       "Bookmark Graph", "Add/remove current graph from bookmarks",
+                       Shortcut{ImGuiKey_D, true, false, false, false}},
+      ActionDefinition{ActionId::OpenGraphPalette, "open_graph_palette",
+                       "Open Graph Palette", "Quick graph switcher",
+                       Shortcut{ImGuiKey_K, true, false, false, false}},
+  };
+  return definitions;
+}
+
+bool ContainsInsensitive(const std::string& text, const std::string& pattern) {
+  if (pattern.empty()) return true;
+  auto it = std::search(text.begin(), text.end(), pattern.begin(),
+                        pattern.end(), [](char a, char b) {
+                          return std::tolower(static_cast<unsigned char>(a)) ==
+                                 std::tolower(static_cast<unsigned char>(b));
+                        });
+  return it != text.end();
+}
+
+}  // namespace
+
+ShortcutManager::ShortcutManager() {
+  config_path_ = ResolveDefaultPath();
+  const auto& defs = ActionDefinitions();
+  for (const auto& def : defs) {
+    bindings_[ToIndex(def.id)] = def.default_shortcut;
+  }
+}
+
+const std::array<ActionDefinition, kActionCount>& ShortcutManager::Actions() const {
+  return ActionDefinitions();
+}
+
+const ActionDefinition& ShortcutManager::GetDefinition(ActionId id) const {
+  return ActionDefinitions()[ToIndex(id)];
+}
+
+const Shortcut& ShortcutManager::GetShortcut(ActionId id) const {
+  return bindings_[ToIndex(id)];
+}
+
+void ShortcutManager::SetShortcut(ActionId id, const Shortcut& shortcut) {
+  Shortcut& slot = bindings_[ToIndex(id)];
+  if (slot.key == shortcut.key && slot.ctrl == shortcut.ctrl &&
+      slot.shift == shortcut.shift && slot.alt == shortcut.alt &&
+      slot.super == shortcut.super) {
+    return;
+  }
+  slot = shortcut;
+  dirty_ = true;
+}
+
+void ShortcutManager::ResetShortcut(ActionId id) {
+  SetShortcut(id, GetDefinition(id).default_shortcut);
+}
+
+void ShortcutManager::ResetAll() {
+  const auto& defs = ActionDefinitions();
+  for (const auto& def : defs) {
+    bindings_[ToIndex(def.id)] = def.default_shortcut;
+  }
+  dirty_ = true;
+}
+
+void ShortcutManager::SetConfigPath(std::string path) {
+  if (path.empty()) {
+    config_path_ = ResolveDefaultPath();
+    return;
+  }
+  config_path_ = std::move(path);
+}
+
+bool ShortcutManager::LoadFromDisk(std::string* error) {
+  last_error_.clear();
+  if (config_path_.empty()) {
+    config_path_ = ResolveDefaultPath();
+  }
+
+  std::filesystem::path path(config_path_);
+  if (!std::filesystem::exists(path)) {
+    if (error) *error = "";
+    return false;
+  }
+
+  std::ifstream file(path);
+  if (!file.is_open()) {
+    last_error_ = "Failed to open shortcut config";
+    if (error) *error = last_error_;
+    return false;
+  }
+
+  std::string line;
+  bool ok = true;
+  while (std::getline(file, line)) {
+    std::string trimmed = Trim(line);
+    if (trimmed.empty()) continue;
+    if (trimmed[0] == '#' || trimmed[0] == ';') continue;
+
+    size_t pos = trimmed.find('=');
+    if (pos == std::string::npos) {
+      ok = false;
+      continue;
+    }
+    std::string key = Trim(trimmed.substr(0, pos));
+    std::string value = Trim(trimmed.substr(pos + 1));
+    const ActionDefinition* def = FindDefinition(key);
+    if (!def) {
+      ok = false;
+      continue;
+    }
+    Shortcut shortcut;
+    std::string parse_error;
+    if (!ParseShortcutString(value, &shortcut, &parse_error)) {
+      ok = false;
+      continue;
+    }
+    bindings_[ToIndex(def->id)] = shortcut;
+  }
+
+  dirty_ = false;
+  if (!ok) {
+    last_error_ = "Some shortcuts could not be parsed";
+    if (error) *error = last_error_;
+  }
+  return ok;
+}
+
+bool ShortcutManager::SaveToDisk(std::string* error) {
+  last_error_.clear();
+  if (config_path_.empty()) {
+    last_error_ = "Missing config path";
+    if (error) *error = last_error_;
+    return false;
+  }
+
+  std::filesystem::path path(config_path_);
+  std::filesystem::path parent = path.parent_path();
+  if (!parent.empty()) {
+    std::error_code ec;
+    std::filesystem::create_directories(parent, ec);
+    if (ec) {
+      last_error_ = "Failed to create shortcut config directory";
+      if (error) *error = last_error_;
+      return false;
+    }
+  }
+
+  std::ofstream file(path, std::ios::trunc);
+  if (!file.is_open()) {
+    last_error_ = "Failed to write shortcut config";
+    if (error) *error = last_error_;
+    return false;
+  }
+
+  file << "# AFS Viz shortcuts\n";
+  file << "# Format: action_key = Ctrl+Shift+Key\n";
+  const ImGuiIO& io = ImGui::GetIO();
+  for (const auto& def : Actions()) {
+    std::string value = FormatShortcut(GetShortcut(def.id), io);
+    file << def.config_key << " = " << value << "\n";
+  }
+
+  if (!file) {
+    last_error_ = "Failed to write shortcut config";
+    if (error) *error = last_error_;
+    return false;
+  }
+  dirty_ = false;
+  return true;
+}
+
+bool ShortcutManager::SaveIfDirty(std::string* error) {
+  if (!dirty_) return false;
+  std::string save_error;
+  if (!SaveToDisk(&save_error)) {
+    last_error_ = save_error;
+    if (error) *error = last_error_;
+    return false;
+  }
+  dirty_ = false;
+  return true;
+}
+
+void ShortcutManager::BeginCapture(ActionId id) {
+  capturing_action_ = id;
+  capturing_ = true;
+}
+
+void ShortcutManager::CancelCapture() {
+  capturing_action_ = ActionId::Count;
+  capturing_ = false;
+}
+
+bool ShortcutManager::HandleCapture(const ImGuiIO& io) {
+  if (!capturing_) return false;
+
+  if (ImGui::IsKeyPressed(ImGuiKey_Escape, false)) {
+    CancelCapture();
+    return true;
+  }
+
+  for (int key = ImGuiKey_NamedKey_BEGIN; key < ImGuiKey_NamedKey_END; ++key) {
+    ImGuiKey key_value = static_cast<ImGuiKey>(key);
+    if (!IsValidShortcutKey(key_value)) continue;
+    if (ImGui::IsKeyPressed(key_value, false)) {
+      Shortcut shortcut;
+      shortcut.key = key_value;
+      shortcut.ctrl = io.KeyCtrl;
+      shortcut.shift = io.KeyShift;
+      shortcut.alt = io.KeyAlt;
+      shortcut.super = io.KeySuper;
+      SetShortcut(capturing_action_, shortcut);
+      CancelCapture();
+      return true;
+    }
+  }
+
+  return false;
+}
+
+bool ShortcutManager::ShouldProcessShortcuts(const ImGuiIO& io) const {
+  if (capturing_) return false;
+  if (io.WantTextInput) return false;
+  return true;
+}
+
+bool ShortcutManager::IsTriggered(ActionId id, const ImGuiIO& io) const {
+  if (!ShouldProcessShortcuts(io)) return false;
+  const Shortcut& shortcut = GetShortcut(id);
+  if (shortcut.key == ImGuiKey_None) return false;
+  if (!ImGui::IsKeyPressed(shortcut.key, false)) return false;
+  if (shortcut.ctrl != io.KeyCtrl) return false;
+  if (shortcut.shift != io.KeyShift) return false;
+  if (shortcut.alt != io.KeyAlt) return false;
+  if (shortcut.super != io.KeySuper) return false;
+  return true;
+}
+
+std::string ShortcutManager::FormatShortcut(ActionId id, const ImGuiIO& io) const {
+  return FormatShortcut(GetShortcut(id), io);
+}
+
+std::string ShortcutManager::FormatShortcut(const Shortcut& shortcut,
+                                            const ImGuiIO& io) {
+  static_cast<void>(io);
+  if (shortcut.key == ImGuiKey_None) return "";
+
+  std::string label;
+  auto append = [&](const char* part) {
+    if (!label.empty()) label += "+";
+    label += part;
+  };
+
+  if (shortcut.ctrl) append("Ctrl");
+  if (shortcut.shift) append("Shift");
+  if (shortcut.alt) append("Alt");
+  if (shortcut.super) append("Super");
+
+  const char* key_name = ImGui::GetKeyName(shortcut.key);
+  append(key_name && key_name[0] != '\0' ? key_name : "?");
+
+  return label;
+}
+
+size_t ShortcutManager::ToIndex(ActionId id) {
+  return static_cast<size_t>(id);
+}
+
+const ActionDefinition* ShortcutManager::FindDefinition(
+    const std::string& key) const {
+  std::string needle = ToLower(key);
+  for (const auto& def : Actions()) {
+    if (ToLower(def.config_key) == needle) return &def;
+    if (ToLower(def.label) == needle) return &def;
+  }
+  return nullptr;
+}
+
+std::string ShortcutManager::Trim(const std::string& text) {
+  size_t start = 0;
+  while (start < text.size() &&
+         std::isspace(static_cast<unsigned char>(text[start]))) {
+    ++start;
+  }
+  size_t end = text.size();
+  while (end > start &&
+         std::isspace(static_cast<unsigned char>(text[end - 1]))) {
+    --end;
+  }
+  return text.substr(start, end - start);
+}
+
+std::string ShortcutManager::ToLower(const std::string& text) {
+  std::string out = text;
+  std::transform(out.begin(), out.end(), out.begin(),
+                 [](unsigned char ch) { return std::tolower(ch); });
+  return out;
+}
+
+ImGuiKey ShortcutManager::FindKeyByName(const std::string& name) {
+  std::string target = ToLower(name);
+  for (int key = ImGuiKey_NamedKey_BEGIN; key < ImGuiKey_NamedKey_END; ++key) {
+    ImGuiKey key_value = static_cast<ImGuiKey>(key);
+    const char* key_name = ImGui::GetKeyName(key_value);
+    if (!key_name || key_name[0] == '\0') continue;
+    if (ToLower(key_name) == target) return key_value;
+  }
+  return ImGuiKey_None;
+}
+
+bool ShortcutManager::ParseShortcutString(const std::string& text,
+                                          Shortcut* shortcut,
+                                          std::string* error) {
+  if (!shortcut) return false;
+  Shortcut result;
+  std::string value = Trim(text);
+  if (value.empty() || ToLower(value) == "none" ||
+      ToLower(value) == "unbound") {
+    *shortcut = result;
+    return true;
+  }
+
+  std::stringstream stream(value);
+  std::string token;
+  bool has_key = false;
+  while (std::getline(stream, token, '+')) {
+    std::string part = Trim(token);
+    if (part.empty()) continue;
+    std::string lower = ToLower(part);
+
+    if (lower == "ctrl" || lower == "control") {
+      result.ctrl = true;
+      continue;
+    }
+    if (lower == "shift") {
+      result.shift = true;
+      continue;
+    }
+    if (lower == "alt" || lower == "option") {
+      result.alt = true;
+      continue;
+    }
+    if (lower == "super" || lower == "cmd" || lower == "command" ||
+        lower == "meta") {
+      result.super = true;
+      continue;
+    }
+
+    if (has_key) {
+      if (error) *error = "Multiple keys specified";
+      return false;
+    }
+    ImGuiKey key_value = FindKeyByName(part);
+    if (key_value == ImGuiKey_None) {
+      if (error) *error = "Unknown key";
+      return false;
+    }
+    result.key = key_value;
+    has_key = true;
+  }
+
+  if (!has_key) {
+    if (error) *error = "Missing key";
+    return false;
+  }
+
+  *shortcut = result;
+  return true;
+}
+
+std::string ShortcutManager::ResolveDefaultPath() {
+  const char* override_path = std::getenv("AFS_VIZ_SHORTCUTS_PATH");
+  if (override_path && override_path[0] != '\0') {
+    return override_path;
+  }
+
+  const char* xdg = std::getenv("XDG_CONFIG_HOME");
+  const char* home = std::getenv("HOME");
+  std::filesystem::path base;
+  if (xdg && xdg[0] != '\0') {
+    base = xdg;
+  } else if (home && home[0] != '\0') {
+    base = std::filesystem::path(home) / ".config";
+  } else {
+    base = std::filesystem::current_path();
+  }
+  return (base / "afs" / "viz_shortcuts.conf").string();
+}
+
+bool ShortcutManager::IsValidShortcutKey(ImGuiKey key) {
+  // Exclude modifier keys from being bound as main shortcut keys
+  switch (key) {
+    case ImGuiKey_None:
+    case ImGuiKey_LeftCtrl:
+    case ImGuiKey_RightCtrl:
+    case ImGuiKey_LeftShift:
+    case ImGuiKey_RightShift:
+    case ImGuiKey_LeftAlt:
+    case ImGuiKey_RightAlt:
+    case ImGuiKey_LeftSuper:
+    case ImGuiKey_RightSuper:
+      return false;
+    default:
+      return true;
+  }
+}
+
+void RenderShortcutsWindow(ShortcutManager& shortcuts, bool* open) {
+  if (!open || !*open) return;
+
+  if (!ImGui::Begin("Keyboard Shortcuts", open)) {
+    ImGui::End();
+    return;
+  }
+
+  ImGui::Text("Customize keyboard shortcuts.");
+  ImGui::TextDisabled("Click Edit, then press the desired key combo.");
+
+  if (ImGui::Button("Save")) {
+    shortcuts.SaveToDisk();
+  }
+  ImGui::SameLine();
+  if (ImGui::Button("Reload")) {
+    shortcuts.LoadFromDisk();
+  }
+  ImGui::SameLine();
+  if (ImGui::Button("Reset All")) {
+    shortcuts.ResetAll();
+  }
+  if (shortcuts.IsCapturing()) {
+    ImGui::SameLine();
+    ImGui::TextDisabled("Press keys... (Esc to cancel)");
+  }
+
+  ImGui::TextDisabled("Config: %s", shortcuts.GetConfigPath().c_str());
+  if (!shortcuts.GetLastError().empty()) {
+    ImGui::TextColored(ImVec4(0.9f, 0.4f, 0.4f, 1.0f),
+                       "Shortcut error: %s", shortcuts.GetLastError().c_str());
+  }
+
+  static std::array<char, 64> filter{};
+  ImGui::InputTextWithHint("##ShortcutFilter", "Filter actions",
+                           filter.data(), filter.size());
+
+  if (ImGui::BeginTable("ShortcutTable", 4,
+                        ImGuiTableFlags_RowBg | ImGuiTableFlags_BordersInnerV |
+                            ImGuiTableFlags_SizingStretchProp)) {
+    ImGui::TableSetupColumn("Action", ImGuiTableColumnFlags_WidthStretch);
+    ImGui::TableSetupColumn("Shortcut", ImGuiTableColumnFlags_WidthFixed, 150.0f);
+    ImGui::TableSetupColumn("Description", ImGuiTableColumnFlags_WidthStretch);
+    ImGui::TableSetupColumn("Edit", ImGuiTableColumnFlags_WidthFixed, 140.0f);
+    ImGui::TableHeadersRow();
+
+    const std::string filter_text(filter.data());
+    const ImGuiIO& io = ImGui::GetIO();
+    for (const auto& action : shortcuts.Actions()) {
+      if (!ContainsInsensitive(action.label, filter_text) &&
+          !ContainsInsensitive(action.description, filter_text)) {
+        continue;
+      }
+
+      ImGui::TableNextRow();
+      ImGui::TableSetColumnIndex(0);
+      ImGui::Text("%s", action.label);
+
+      ImGui::TableSetColumnIndex(1);
+      std::string label = shortcuts.FormatShortcut(action.id, io);
+      ImGui::TextDisabled("%s", label.empty() ? "Unbound" : label.c_str());
+
+      ImGui::TableSetColumnIndex(2);
+      ImGui::TextWrapped("%s", action.description);
+
+      ImGui::TableSetColumnIndex(3);
+      ImGui::PushID(static_cast<int>(action.id));
+      bool is_capturing = shortcuts.IsCapturing() &&
+                          shortcuts.CapturingAction() == action.id;
+      if (is_capturing) {
+        if (ImGui::Button("Cancel")) {
+          shortcuts.CancelCapture();
+        }
+      } else if (ImGui::Button("Edit")) {
+        shortcuts.BeginCapture(action.id);
+      }
+      ImGui::SameLine();
+      if (ImGui::Button("Clear")) {
+        shortcuts.SetShortcut(action.id, Shortcut{});
+      }
+      ImGui::SameLine();
+      if (ImGui::Button("Reset")) {
+        shortcuts.ResetShortcut(action.id);
+      }
+      ImGui::PopID();
+    }
+
+    ImGui::EndTable();
+  }
+
+  ImGui::End();
+}
+
+}  // namespace ui
+}  // namespace viz
+}  // namespace afs

apps/studio/src/ui/shortcuts.h

@@ -0,0 +1,118 @@
+#pragma once
+
+#include <array>
+#include <string>
+
+#include <imgui.h>
+
+namespace afs {
+namespace viz {
+namespace ui {
+
+enum class ActionId {
+  Refresh,
+  Quit,
+  ToggleInspector,
+  ToggleDatasetPanel,
+  ToggleSystemsPanel,
+  ToggleStatusBar,
+  ToggleControls,
+  ToggleAutoRefresh,
+  ToggleSimulation,
+  ToggleCompactUI,
+  ToggleLockLayout,
+  ResetLayout,
+  ToggleSampleReview,
+  ToggleShortcutsWindow,
+  ToggleDemoWindow,
+  WorkspaceDashboard,
+  WorkspaceAnalysis,
+  WorkspaceOptimization,
+  WorkspaceSystems,
+  WorkspaceCustom,
+  WorkspaceChat,
+  WorkspaceTraining,
+  WorkspaceContext,
+  // Graph View Navigation
+  ToggleGraphBrowser,
+  ToggleCompanionPanels,
+  NavigateBack,
+  NavigateForward,
+  BookmarkGraph,
+  OpenGraphPalette,
+  Count,
+};
+
+struct Shortcut {
+  ImGuiKey key = ImGuiKey_None;
+  bool ctrl = false;
+  bool shift = false;
+  bool alt = false;
+  bool super = false;
+};
+
+struct ActionDefinition {
+  ActionId id;
+  const char* config_key;
+  const char* label;
+  const char* description;
+  Shortcut default_shortcut;
+};
+
+constexpr int kActionCount = static_cast<int>(ActionId::Count);
+
+class ShortcutManager {
+ public:
+  ShortcutManager();
+
+  const std::array<ActionDefinition, kActionCount>& Actions() const;
+  const ActionDefinition& GetDefinition(ActionId id) const;
+  const Shortcut& GetShortcut(ActionId id) const;
+  const std::string& GetConfigPath() const { return config_path_; }
+  const std::string& GetLastError() const { return last_error_; }
+
+  void SetShortcut(ActionId id, const Shortcut& shortcut);
+  void ResetShortcut(ActionId id);
+  void ResetAll();
+  void SetConfigPath(std::string path);
+  bool LoadFromDisk(std::string* error = nullptr);
+  bool SaveToDisk(std::string* error = nullptr);
+  bool SaveIfDirty(std::string* error = nullptr);
+
+  bool IsCapturing() const { return capturing_; }
+  ActionId CapturingAction() const { return capturing_action_; }
+  void BeginCapture(ActionId id);
+  void CancelCapture();
+  bool HandleCapture(const ImGuiIO& io);
+
+  bool ShouldProcessShortcuts(const ImGuiIO& io) const;
+  bool IsTriggered(ActionId id, const ImGuiIO& io) const;
+
+  std::string FormatShortcut(ActionId id, const ImGuiIO& io) const;
+  static std::string FormatShortcut(const Shortcut& shortcut, const ImGuiIO& io);
+
+ private:
+  static size_t ToIndex(ActionId id);
+  static bool IsValidShortcutKey(ImGuiKey key);
+  const ActionDefinition* FindDefinition(const std::string& key) const;
+  static std::string Trim(const std::string& text);
+  static std::string ToLower(const std::string& text);
+  static ImGuiKey FindKeyByName(const std::string& name);
+  static bool ParseShortcutString(const std::string& text,
+                                  Shortcut* shortcut,
+                                  std::string* error);
+  static std::string ResolveDefaultPath();
+
+  std::array<Shortcut, kActionCount> bindings_{};
+  ActionId capturing_action_ = ActionId::Count;
+  bool capturing_ = false;
+  bool dirty_ = false;
+  std::string config_path_;
+  std::string last_error_;
+};
+
+void RenderShortcutsWindow(ShortcutManager& shortcuts, bool* open);
+
+}  // namespace ui
+}  // namespace viz
+}  // namespace afs

apps/studio/src/widgets/imgui_memory_editor.h

@@ -0,0 +1,861 @@
+#pragma once
+
+#include <stdint.h>  // uint8_t, etc.
+#include <stdio.h>   // sprintf, scanf
+
+#include "icons.h"
+
+#ifdef _MSC_VER
+#define _PRISizeT "I"
+#define ImSnprintf _snprintf
+#else
+#define _PRISizeT "z"
+#define ImSnprintf snprintf
+#endif
+
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable : 4996)  // warning C4996: 'sprintf': This function or \
+                                 // variable may be unsafe.
+#endif
+
+namespace afs {
+namespace viz {
+
+struct MemoryEditorWidget {
+  enum DataFormat {
+    DataFormat_Bin = 0,
+    DataFormat_Dec = 1,
+    DataFormat_Hex = 2,
+    DataFormat_COUNT
+  };
+
+  // Settings
+  bool Open;  // = true   // set to false when DrawWindow() was closed. ignore
+              // if not using DrawWindow().
+  bool ReadOnly;        // = false  // disable any editing.
+  int Cols;             // = 16     // number of columns to display.
+  bool OptShowOptions;  // = true   // display options button/context menu. when
+                        // disabled, options will be locked unless you provide
+                        // your own UI for them.
+  bool OptShowDataPreview;  // = false  // display a footer previewing the
+                            // decimal/binary/hex/float representation of the
+                            // currently selected bytes.
+  bool OptShowHexII;  // = false  // display values in HexII representation
+                      // instead of regular hexadecimal: hide null/zero bytes,
+                      // ascii values as ".X".
+  bool OptShowAscii;  // = true   // display ASCII representation on the right
+                      // side.
+  bool OptGreyOutZeroes;  // = true   // display null/zero bytes using the
+                          // TextDisabled color.
+  bool OptUpperCaseHex;   // = true   // display hexadecimal values as "FF"
+                          // instead of "ff".
+  int OptMidColsCount;  // = 8      // set to 0 to disable extra spacing between
+                        // every mid-cols.
+  int OptAddrDigitsCount;      // = 0      // number of addr digits to display
+                               // (default calculated based on maximum displayed
+                               // addr).
+  float OptFooterExtraHeight;  // = 0      // space to reserve at the bottom of
+                               // the widget to add custom widgets
+  ImU32 HighlightColor;  //          // background color of highlighted bytes.
+  ImU8 (*ReadFn)(const ImU8* data,
+                 size_t off);  // = 0      // optional handler to read bytes.
+  void (*WriteFn)(ImU8* data, size_t off,
+                  ImU8 d);  // = 0      // optional handler to write bytes.
+  bool (*HighlightFn)(
+      const ImU8* data,
+      size_t off);  //= 0      // optional handler to return Highlight property
+                    //(to support non-contiguous highlighting).
+
+  // [Internal State]
+  bool ContentsWidthChanged;
+  size_t DataPreviewAddr;
+  size_t DataEditingAddr;
+  bool DataEditingTakeFocus;
+  char DataInputBuf[32];
+  char AddrInputBuf[32];
+  size_t GotoAddr;
+  size_t HighlightMin, HighlightMax;
+  int PreviewEndianess;
+  ImGuiDataType PreviewDataType;
+
+  // Expanded
+  ImU8* ComparisonData;
+
+  void SetComparisonData(void* data) { ComparisonData = (ImU8*)data; }
+
+  MemoryEditorWidget() {
+    // Settings
+    Open = true;
+    ReadOnly = false;
+    Cols = 16;
+    OptShowOptions = true;
+    OptShowDataPreview = false;
+    OptShowHexII = false;
+    OptShowAscii = true;
+    OptGreyOutZeroes = true;
+    OptUpperCaseHex = true;
+    OptMidColsCount = 8;
+    OptAddrDigitsCount = 0;
+    OptFooterExtraHeight = 0.0f;
+    HighlightColor = IM_COL32(255, 255, 255, 50);
+    ReadFn = nullptr;
+    WriteFn = nullptr;
+    HighlightFn = nullptr;
+
+    // State/Internals
+    ContentsWidthChanged = false;
+    DataPreviewAddr = DataEditingAddr = (size_t)-1;
+    DataEditingTakeFocus = false;
+    memset(DataInputBuf, 0, sizeof(DataInputBuf));
+    memset(AddrInputBuf, 0, sizeof(AddrInputBuf));
+    GotoAddr = (size_t)-1;
+    HighlightMin = HighlightMax = (size_t)-1;
+    PreviewEndianess = 0;
+    PreviewDataType = ImGuiDataType_S32;
+  }
+
+  void GotoAddrAndHighlight(size_t addr_min, size_t addr_max) {
+    GotoAddr = addr_min;
+    HighlightMin = addr_min;
+    HighlightMax = addr_max;
+  }
+
+  struct Sizes {
+    int AddrDigitsCount;
+    float LineHeight;
+    float GlyphWidth;
+    float HexCellWidth;
+    float SpacingBetweenMidCols;
+    float PosHexStart;
+    float PosHexEnd;
+    float PosAsciiStart;
+    float PosAsciiEnd;
+    float WindowWidth;
+
+    Sizes() { memset(this, 0, sizeof(*this)); }
+  };
+
+  void CalcSizes(Sizes& s, size_t mem_size, size_t base_display_addr) {
+    ImGuiStyle& style = ImGui::GetStyle();
+    s.AddrDigitsCount = OptAddrDigitsCount;
+    if (s.AddrDigitsCount == 0)
+      for (size_t n = base_display_addr + mem_size - 1; n > 0; n >>= 4)
+        s.AddrDigitsCount++;
+    s.LineHeight = ImGui::GetTextLineHeight();
+    s.GlyphWidth =
+        ImGui::CalcTextSize("F").x + 1;  // We assume the font is mono-space
+    s.HexCellWidth =
+        (float)(int)(s.GlyphWidth *
+                     2.5f);  // "FF " we include trailing space in the width to
+                             // easily catch clicks everywhere
+    s.SpacingBetweenMidCols =
+        (float)(int)(s.HexCellWidth * 0.25f);  // Every OptMidColsCount columns
+                                               // we add a bit of extra spacing
+    s.PosHexStart = (s.AddrDigitsCount + 2) * s.GlyphWidth;
+    s.PosHexEnd = s.PosHexStart + (s.HexCellWidth * Cols);
+    s.PosAsciiStart = s.PosAsciiEnd = s.PosHexEnd;
+    if (OptShowAscii) {
+      s.PosAsciiStart = s.PosHexEnd + s.GlyphWidth * 1;
+      if (OptMidColsCount > 0)
+        s.PosAsciiStart +=
+            (float)((Cols + OptMidColsCount - 1) / OptMidColsCount) *
+            s.SpacingBetweenMidCols;
+      s.PosAsciiEnd = s.PosAsciiStart + Cols * s.GlyphWidth;
+    }
+    s.WindowWidth = s.PosAsciiEnd + style.ScrollbarSize +
+                    style.WindowPadding.x * 2 + s.GlyphWidth;
+  }
+
+  // Standalone Memory Editor window
+  void DrawWindow(const char* title, void* mem_data, size_t mem_size,
+                  size_t base_display_addr = 0x0000) {
+    Sizes s;
+    CalcSizes(s, mem_size, base_display_addr);
+    ImGui::SetNextWindowSize(ImVec2(s.WindowWidth, s.WindowWidth * 0.60f),
+                             ImGuiCond_FirstUseEver);
+    ImGui::SetNextWindowSizeConstraints(ImVec2(0.0f, 0.0f),
+                                        ImVec2(s.WindowWidth, FLT_MAX));
+
+    Open = true;
+    if (ImGui::Begin(title, &Open, ImGuiWindowFlags_NoScrollbar)) {
+      if (ImGui::IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows) &&
+          ImGui::IsMouseReleased(ImGuiMouseButton_Right))
+        ImGui::OpenPopup("context");
+      DrawContents(mem_data, mem_size, base_display_addr);
+      if (ContentsWidthChanged) {
+        CalcSizes(s, mem_size, base_display_addr);
+        ImGui::SetWindowSize(ImVec2(s.WindowWidth, ImGui::GetWindowSize().y));
+      }
+    }
+    ImGui::End();
+  }
+
+  // Memory Editor contents only
+  void DrawContents(void* mem_data_void, size_t mem_size,
+                    size_t base_display_addr = 0x0000) {
+    if (Cols < 1)
+      Cols = 1;
+
+    ImU8* mem_data = (ImU8*)mem_data_void;
+    Sizes s;
+    CalcSizes(s, mem_size, base_display_addr);
+    ImGuiStyle& style = ImGui::GetStyle();
+
+    // We begin into our scrolling region with the 'ImGuiWindowFlags_NoMove' in
+    // order to prevent click from moving the window. This is used as a facility
+    // since our main click detection code doesn't assign an ActiveId so the
+    // click would normally be caught as a window-move.
+    const float height_separator = style.ItemSpacing.y;
+    float footer_height = OptFooterExtraHeight;
+    if (OptShowOptions)
+      footer_height +=
+          height_separator + ImGui::GetFrameHeightWithSpacing() * 1;
+    if (OptShowDataPreview)
+      footer_height += height_separator +
+                       ImGui::GetFrameHeightWithSpacing() * 1 +
+                       ImGui::GetTextLineHeightWithSpacing() * 3;
+    ImGui::BeginChild("##scrolling", ImVec2(0, -footer_height), false,
+                      ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoNav);
+    ImDrawList* draw_list = ImGui::GetWindowDrawList();
+
+    ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(0, 0));
+    ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(0, 0));
+
+    // We are not really using the clipper API correctly here, because we rely
+    // on visible_start_addr/visible_end_addr for our scrolling function.
+    const int line_total_count = (int)((mem_size + Cols - 1) / Cols);
+    ImGuiListClipper clipper;
+    clipper.Begin(line_total_count, s.LineHeight);
+
+    bool data_next = false;
+
+    if (ReadOnly || DataEditingAddr >= mem_size)
+      DataEditingAddr = (size_t)-1;
+    if (DataPreviewAddr >= mem_size)
+      DataPreviewAddr = (size_t)-1;
+
+    size_t preview_data_type_size =
+        OptShowDataPreview ? DataTypeGetSize(PreviewDataType) : 0;
+
+    size_t data_editing_addr_next = (size_t)-1;
+    if (DataEditingAddr != (size_t)-1) {
+      // Move cursor but only apply on next frame so scrolling with be
+      // synchronized (because currently we can't change the scrolling while the
+      // window is being rendered)
+      if (ImGui::IsKeyPressed(ImGuiKey_UpArrow) &&
+          (ptrdiff_t)DataEditingAddr >= (ptrdiff_t)Cols) {
+        data_editing_addr_next = DataEditingAddr - Cols;
+      } else if (ImGui::IsKeyPressed(ImGuiKey_DownArrow) &&
+                 (ptrdiff_t)DataEditingAddr < (ptrdiff_t)mem_size - Cols) {
+        data_editing_addr_next = DataEditingAddr + Cols;
+      } else if (ImGui::IsKeyPressed(ImGuiKey_LeftArrow) &&
+                 (ptrdiff_t)DataEditingAddr > (ptrdiff_t)0) {
+        data_editing_addr_next = DataEditingAddr - 1;
+      } else if (ImGui::IsKeyPressed(ImGuiKey_RightArrow) &&
+                 (ptrdiff_t)DataEditingAddr < (ptrdiff_t)mem_size - 1) {
+        data_editing_addr_next = DataEditingAddr + 1;
+      }
+    }
+
+    // Draw vertical separator
+    ImVec2 window_pos = ImGui::GetWindowPos();
+    if (OptShowAscii)
+      draw_list->AddLine(
+          ImVec2(window_pos.x + s.PosAsciiStart - s.GlyphWidth, window_pos.y),
+          ImVec2(window_pos.x + s.PosAsciiStart - s.GlyphWidth,
+                 window_pos.y + 9999),
+          ImGui::GetColorU32(ImGuiCol_Border));
+
+    const ImU32 color_text = ImGui::GetColorU32(ImGuiCol_Text);
+    const ImU32 color_disabled = OptGreyOutZeroes
+                                     ? ImGui::GetColorU32(ImGuiCol_TextDisabled)
+                                     : color_text;
+
+    const char* format_address =
+        OptUpperCaseHex ? "%0*" _PRISizeT "X: " : "%0*" _PRISizeT "x: ";
+    const char* format_data =
+        OptUpperCaseHex ? "%0*" _PRISizeT "X" : "%0*" _PRISizeT "x";
+    const char* format_byte = OptUpperCaseHex ? "%02X" : "%02x";
+    const char* format_byte_space = OptUpperCaseHex ? "%02X " : "%02x ";
+
+    while (clipper.Step())
+      for (int line_i = clipper.DisplayStart; line_i < clipper.DisplayEnd;
+           line_i++)  // display only visible lines
+      {
+        size_t addr = (size_t)(line_i * Cols);
+        ImGui::Text(format_address, s.AddrDigitsCount,
+                    base_display_addr + addr);
+
+        // Draw Hexadecimal
+        for (int n = 0; n < Cols && addr < mem_size; n++, addr++) {
+          float byte_pos_x = s.PosHexStart + s.HexCellWidth * n;
+          if (OptMidColsCount > 0)
+            byte_pos_x +=
+                (float)(n / OptMidColsCount) * s.SpacingBetweenMidCols;
+          ImGui::SameLine(byte_pos_x);
+
+          // Draw highlight
+          bool is_highlight_from_user_range =
+              (addr >= HighlightMin && addr < HighlightMax);
+          bool is_highlight_from_user_func =
+              (HighlightFn && HighlightFn(mem_data, addr));
+          bool is_highlight_from_preview =
+              (addr >= DataPreviewAddr &&
+               addr < DataPreviewAddr + preview_data_type_size);
+          if (is_highlight_from_user_range || is_highlight_from_user_func ||
+              is_highlight_from_preview) {
+            ImVec2 pos = ImGui::GetCursorScreenPos();
+            float highlight_width = s.GlyphWidth * 2;
+            bool is_next_byte_highlighted =
+                (addr + 1 < mem_size) &&
+                ((HighlightMax != (size_t)-1 && addr + 1 < HighlightMax) ||
+                 (HighlightFn && HighlightFn(mem_data, addr + 1)));
+            if (is_next_byte_highlighted || (n + 1 == Cols)) {
+              highlight_width = s.HexCellWidth;
+              if (OptMidColsCount > 0 && n > 0 && (n + 1) < Cols &&
+                  ((n + 1) % OptMidColsCount) == 0)
+                highlight_width += s.SpacingBetweenMidCols;
+            }
+            draw_list->AddRectFilled(
+                pos, ImVec2(pos.x + highlight_width, pos.y + s.LineHeight),
+                HighlightColor);
+          }
+
+          bool comparison_rom_diff = false;
+          if (ComparisonData != nullptr) {
+            int a = mem_data[addr];
+            int b = ComparisonData[addr];
+            if (a != b) {
+              ImVec2 pos = ImGui::GetCursorScreenPos();
+              float highlight_width = s.GlyphWidth * 2;
+              bool is_next_byte_highlighted =
+                  (addr + 1 < mem_size) &&
+                  ((HighlightMax != (size_t)-1 && addr + 1 < HighlightMax) ||
+                   (HighlightFn && HighlightFn(mem_data, addr + 1)));
+              if (is_next_byte_highlighted || (n + 1 == Cols)) {
+                highlight_width = s.HexCellWidth;
+                if (OptMidColsCount > 0 && n > 0 && (n + 1) < Cols &&
+                    ((n + 1) % OptMidColsCount) == 0)
+                  highlight_width += s.SpacingBetweenMidCols;
+              }
+              draw_list->AddRectFilled(
+                  pos, ImVec2(pos.x + highlight_width, pos.y + s.LineHeight),
+                  IM_COL32(255, 0, 0, 50));
+            }
+          }
+
+          if (DataEditingAddr == addr) {
+            // Display text input on current byte
+            bool data_write = false;
+            ImGui::PushID((void*)addr);
+            if (DataEditingTakeFocus) {
+              ImGui::SetKeyboardFocusHere(0);
+              snprintf(AddrInputBuf, sizeof(AddrInputBuf), format_data, s.AddrDigitsCount,
+                      base_display_addr + addr);
+              snprintf(DataInputBuf, sizeof(DataInputBuf), format_byte,
+                      ReadFn ? ReadFn(mem_data, addr) : mem_data[addr]);
+            }
+            struct UserData {
+              // FIXME: We should have a way to retrieve the text edit cursor
+              // position more easily in the API, this is rather tedious. This
+              // is such a ugly mess we may be better off not using InputText()
+              // at all here.
+              static int Callback(ImGuiInputTextCallbackData* data) {
+                UserData* user_data = (UserData*)data->UserData;
+                if (!data->HasSelection())
+                  user_data->CursorPos = data->CursorPos;
+                if (data->SelectionStart == 0 &&
+                    data->SelectionEnd == data->BufTextLen) {
+                  // When not editing a byte, always refresh its InputText
+                  // content pulled from underlying memory data (this is a bit
+                  // tricky, since InputText technically "owns" the master copy
+                  // of the buffer we edit it in there)
+                  data->DeleteChars(0, data->BufTextLen);
+                  data->InsertChars(0, user_data->CurrentBufOverwrite);
+                  data->SelectionStart = 0;
+                  data->SelectionEnd = 2;
+                  data->CursorPos = 0;
+                }
+                return 0;
+              }
+              char CurrentBufOverwrite[3];  // Input
+              int CursorPos;                // Output
+            };
+            UserData user_data;
+            user_data.CursorPos = -1;
+            snprintf(user_data.CurrentBufOverwrite, sizeof(user_data.CurrentBufOverwrite), format_byte,
+                    ReadFn ? ReadFn(mem_data, addr) : mem_data[addr]);
+            ImGuiInputTextFlags flags = ImGuiInputTextFlags_CharsHexadecimal |
+                                        ImGuiInputTextFlags_EnterReturnsTrue |
+                                        ImGuiInputTextFlags_AutoSelectAll |
+                                        ImGuiInputTextFlags_NoHorizontalScroll |
+                                        ImGuiInputTextFlags_CallbackAlways;
+#if IMGUI_VERSION_NUM >= 18104
+            flags |= ImGuiInputTextFlags_AlwaysOverwrite;
+#else
+            flags |= ImGuiInputTextFlags_AlwaysInsertMode;
+#endif
+            ImGui::SetNextItemWidth(s.GlyphWidth * 2);
+            if (ImGui::InputText("##data", DataInputBuf,
+                                 IM_ARRAYSIZE(DataInputBuf), flags,
+                                 UserData::Callback, &user_data))
+              data_write = data_next = true;
+            else if (!DataEditingTakeFocus && !ImGui::IsItemActive())
+              DataEditingAddr = data_editing_addr_next = (size_t)-1;
+            DataEditingTakeFocus = false;
+            if (user_data.CursorPos >= 2)
+              data_write = data_next = true;
+            if (data_editing_addr_next != (size_t)-1)
+              data_write = data_next = false;
+            unsigned int data_input_value = 0;
+            if (data_write &&
+                sscanf(DataInputBuf, "%X", &data_input_value) == 1) {
+              if (WriteFn)
+                WriteFn(mem_data, addr, (ImU8)data_input_value);
+              else
+                mem_data[addr] = (ImU8)data_input_value;
+            }
+            ImGui::PopID();
+          } else {
+            // NB: The trailing space is not visible but ensure there's no gap
+            // that the mouse cannot click on.
+            ImU8 b = ReadFn ? ReadFn(mem_data, addr) : mem_data[addr];
+
+            if (OptShowHexII) {
+              if ((b >= 32 && b < 128))
+                ImGui::Text(".%c ", b);
+              else if (b == 0xFF && OptGreyOutZeroes)
+                ImGui::TextDisabled("## ");
+              else if (b == 0x00)
+                ImGui::Text("   ");
+              else
+                ImGui::Text(format_byte_space, b);
+            } else {
+              if (b == 0 && OptGreyOutZeroes)
+                ImGui::TextDisabled("00 ");
+              else
+                ImGui::Text(format_byte_space, b);
+            }
+            if (!ReadOnly && ImGui::IsItemHovered() &&
+                ImGui::IsMouseClicked(0)) {
+              DataEditingTakeFocus = true;
+              data_editing_addr_next = addr;
+            }
+          }
+        }
+
+        if (OptShowAscii) {
+          // Draw ASCII values
+          ImGui::SameLine(s.PosAsciiStart);
+          ImVec2 pos = ImGui::GetCursorScreenPos();
+          addr = line_i * Cols;
+          ImGui::PushID(line_i);
+          if (ImGui::InvisibleButton(
+                  "ascii",
+                  ImVec2(s.PosAsciiEnd - s.PosAsciiStart, s.LineHeight))) {
+            DataEditingAddr = DataPreviewAddr =
+                addr +
+                (size_t)((ImGui::GetIO().MousePos.x - pos.x) / s.GlyphWidth);
+            DataEditingTakeFocus = true;
+          }
+          ImGui::PopID();
+          for (int n = 0; n < Cols && addr < mem_size; n++, addr++) {
+            if (addr == DataEditingAddr) {
+              draw_list->AddRectFilled(
+                  pos, ImVec2(pos.x + s.GlyphWidth, pos.y + s.LineHeight),
+                  ImGui::GetColorU32(ImGuiCol_FrameBg));
+              draw_list->AddRectFilled(
+                  pos, ImVec2(pos.x + s.GlyphWidth, pos.y + s.LineHeight),
+                  ImGui::GetColorU32(ImGuiCol_TextSelectedBg));
+            }
+            unsigned char c = ReadFn ? ReadFn(mem_data, addr) : mem_data[addr];
+            char display_c = (c < 32 || c >= 128) ? '.' : c;
+            draw_list->AddText(pos,
+                               (display_c == c) ? color_text : color_disabled,
+                               &display_c, &display_c + 1);
+            pos.x += s.GlyphWidth;
+          }
+        }
+      }
+    ImGui::PopStyleVar(2);
+    ImGui::EndChild();
+
+    // Notify the main window of our ideal child content size (FIXME: we are
+    // missing an API to get the contents size from the child)
+    ImGui::SetCursorPosX(s.WindowWidth);
+
+    if (data_next && DataEditingAddr + 1 < mem_size) {
+      DataEditingAddr = DataPreviewAddr = DataEditingAddr + 1;
+      DataEditingTakeFocus = true;
+    } else if (data_editing_addr_next != (size_t)-1) {
+      DataEditingAddr = DataPreviewAddr = data_editing_addr_next;
+      DataEditingTakeFocus = true;
+    }
+
+    const bool lock_show_data_preview = OptShowDataPreview;
+    if (OptShowOptions) {
+      ImGui::Separator();
+      DrawOptionsLine(s, mem_data, mem_size, base_display_addr);
+    }
+
+    if (lock_show_data_preview) {
+      ImGui::Separator();
+      DrawPreviewLine(s, mem_data, mem_size, base_display_addr);
+    }
+  }
+
+  void DrawOptionsLine(const Sizes& s, void* mem_data, size_t mem_size,
+                       size_t base_display_addr) {
+    IM_UNUSED(mem_data);
+    ImGuiStyle& style = ImGui::GetStyle();
+    const char* format_range =
+        OptUpperCaseHex ? "Range %0*" _PRISizeT "X..%0*" _PRISizeT "X"
+                        : "Range %0*" _PRISizeT "x..%0*" _PRISizeT "x";
+
+    // Options menu
+    if (ImGui::Button(ICON_MD_SETTINGS " Options"))
+      ImGui::OpenPopup("context");
+    if (ImGui::BeginPopup("context")) {
+      ImGui::SetNextItemWidth(s.GlyphWidth * 7 + style.FramePadding.x * 2.0f);
+      if (ImGui::DragInt(ICON_MD_VIEW_COLUMN " ##cols", &Cols, 0.2f, 4, 32, "%d cols")) {
+        ContentsWidthChanged = true;
+        if (Cols < 1)
+          Cols = 1;
+      }
+      ImGui::Checkbox(ICON_MD_PREVIEW " Show Data Preview", &OptShowDataPreview);
+      ImGui::Checkbox(ICON_MD_HEXAGON " Show HexII", &OptShowHexII);
+      if (ImGui::Checkbox(ICON_MD_ABC " Show Ascii", &OptShowAscii)) {
+        ContentsWidthChanged = true;
+      }
+      ImGui::Checkbox(ICON_MD_FORMAT_COLOR_RESET " Grey out zeroes", &OptGreyOutZeroes);
+      ImGui::Checkbox(ICON_MD_KEYBOARD_CAPSLOCK " Uppercase Hex", &OptUpperCaseHex);
+
+      ImGui::EndPopup();
+    }
+
+    ImGui::SameLine();
+    ImGui::Text(ICON_MD_ZOOM_OUT_MAP);
+    ImGui::SameLine();
+    ImGui::Text(format_range, s.AddrDigitsCount, base_display_addr,
+                s.AddrDigitsCount, base_display_addr + mem_size - 1);
+    ImGui::SameLine();
+    ImGui::SetNextItemWidth((s.AddrDigitsCount + 1) * s.GlyphWidth +
+                            style.FramePadding.x * 2.0f);
+    if (ImGui::InputText("##addr", AddrInputBuf, IM_ARRAYSIZE(AddrInputBuf),
+                         ImGuiInputTextFlags_CharsHexadecimal |
+                             ImGuiInputTextFlags_EnterReturnsTrue)) {
+      size_t goto_addr;
+      if (sscanf(AddrInputBuf, "%" _PRISizeT "X", &goto_addr) == 1) {
+        GotoAddr = goto_addr - base_display_addr;
+        HighlightMin = HighlightMax = (size_t)-1;
+      }
+    }
+    ImGui::SameLine();
+    ImGui::Text(ICON_MD_LOCATION_ON);
+
+    if (GotoAddr != (size_t)-1) {
+      if (GotoAddr < mem_size) {
+        ImGui::BeginChild("##scrolling");
+        ImGui::SetScrollFromPosY(ImGui::GetCursorStartPos().y +
+                                 (GotoAddr / Cols) *
+                                     ImGui::GetTextLineHeight());
+        ImGui::EndChild();
+        DataEditingAddr = DataPreviewAddr = GotoAddr;
+        DataEditingTakeFocus = true;
+      }
+      GotoAddr = (size_t)-1;
+    }
+  }
+
+  void DrawPreviewLine(const Sizes& s, void* mem_data_void, size_t mem_size,
+                       size_t base_display_addr) {
+    IM_UNUSED(base_display_addr);
+    ImU8* mem_data = (ImU8*)mem_data_void;
+    ImGuiStyle& style = ImGui::GetStyle();
+    ImGui::AlignTextToFramePadding();
+    ImGui::Text(ICON_MD_SEARCH " Preview as:");
+    ImGui::SameLine();
+    ImGui::SetNextItemWidth((s.GlyphWidth * 10.0f) +
+                            style.FramePadding.x * 2.0f +
+                            style.ItemInnerSpacing.x);
+    if (ImGui::BeginCombo("##combo_type", DataTypeGetDesc(PreviewDataType),
+                          ImGuiComboFlags_HeightLargest)) {
+      for (int n = 0; n < ImGuiDataType_COUNT; n++)
+        if (ImGui::Selectable(DataTypeGetDesc((ImGuiDataType)n),
+                              PreviewDataType == n))
+          PreviewDataType = (ImGuiDataType)n;
+      ImGui::EndCombo();
+    }
+    ImGui::SameLine();
+    ImGui::SetNextItemWidth((s.GlyphWidth * 6.0f) +
+                            style.FramePadding.x * 2.0f +
+                            style.ItemInnerSpacing.x);
+    ImGui::Combo("##combo_endianess", &PreviewEndianess, "LE\0BE\0\0");
+
+    char buf[128] = "";
+    float x = s.GlyphWidth * 6.0f;
+    bool has_value = DataPreviewAddr != (size_t)-1;
+    if (has_value)
+      DrawPreviewData(DataPreviewAddr, mem_data, mem_size, PreviewDataType,
+                      DataFormat_Dec, buf, (size_t)IM_ARRAYSIZE(buf));
+    ImGui::Text(ICON_MD_NUMBERS " Dec");
+    ImGui::SameLine(x);
+    ImGui::TextUnformatted(has_value ? buf : "N/A");
+    if (has_value)
+      DrawPreviewData(DataPreviewAddr, mem_data, mem_size, PreviewDataType,
+                      DataFormat_Hex, buf, (size_t)IM_ARRAYSIZE(buf));
+    ImGui::Text(ICON_MD_HEXAGON " Hex");
+    ImGui::SameLine(x);
+    ImGui::TextUnformatted(has_value ? buf : "N/A");
+    if (has_value)
+      DrawPreviewData(DataPreviewAddr, mem_data, mem_size, PreviewDataType,
+                      DataFormat_Bin, buf, (size_t)IM_ARRAYSIZE(buf));
+    buf[IM_ARRAYSIZE(buf) - 1] = 0;
+    ImGui::Text(ICON_MD_DATA_ARRAY " Bin");
+    ImGui::SameLine(x);
+    ImGui::TextUnformatted(has_value ? buf : "N/A");
+  }
+
+  // Utilities for Data Preview
+  const char* DataTypeGetDesc(ImGuiDataType data_type) const {
+    const char* descs[] = {"Int8",   "Uint8", "Int16",  "Uint16", "Int32",
+                           "Uint32", "Int64", "Uint64", "Float",  "Double"};
+    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
+    return descs[data_type];
+  }
+
+  size_t DataTypeGetSize(ImGuiDataType data_type) const {
+    const size_t sizes[] = {
+        1, 1, 2, 2, 4, 4, 8, 8, sizeof(float), sizeof(double)};
+    IM_ASSERT(data_type >= 0 && data_type < ImGuiDataType_COUNT);
+    return sizes[data_type];
+  }
+
+  const char* DataFormatGetDesc(DataFormat data_format) const {
+    const char* descs[] = {"Bin", "Dec", "Hex"};
+    IM_ASSERT(data_format >= 0 && data_format < DataFormat_COUNT);
+    return descs[data_format];
+  }
+
+  bool IsBigEndian() const {
+    uint16_t x = 1;
+    char c[2];
+    memcpy(c, &x, 2);
+    return c[0] != 0;
+  }
+
+  static void* EndianessCopyBigEndian(void* _dst, void* _src, size_t s,
+                                      int is_little_endian) {
+    if (is_little_endian) {
+      uint8_t* dst = (uint8_t*)_dst;
+      uint8_t* src = (uint8_t*)_src + s - 1;
+      for (int i = 0, n = (int)s; i < n; ++i)
+        memcpy(dst++, src--, 1);
+      return _dst;
+    } else {
+      return memcpy(_dst, _src, s);
+    }
+  }
+
+  static void* EndianessCopyLittleEndian(void* _dst, void* _src, size_t s,
+                                         int is_little_endian) {
+    if (is_little_endian) {
+      return memcpy(_dst, _src, s);
+    } else {
+      uint8_t* dst = (uint8_t*)_dst;
+      uint8_t* src = (uint8_t*)_src + s - 1;
+      for (int i = 0, n = (int)s; i < n; ++i)
+        memcpy(dst++, src--, 1);
+      return _dst;
+    }
+  }
+
+  void* EndianessCopy(void* dst, void* src, size_t size) const {
+    static void* (*fp)(void*, void*, size_t, int) = nullptr;
+    if (fp == nullptr)
+      fp = IsBigEndian() ? EndianessCopyBigEndian : EndianessCopyLittleEndian;
+    return fp(dst, src, size, PreviewEndianess);
+  }
+
+  const char* FormatBinary(const uint8_t* buf, int width) const {
+    IM_ASSERT(width <= 64);
+    size_t out_n = 0;
+    static char out_buf[64 + 8 + 1];
+    int n = width / 8;
+    for (int j = n - 1; j >= 0; --j) {
+      for (int i = 0; i < 8; ++i)
+        out_buf[out_n++] = (buf[j] & (1 << (7 - i))) ? '1' : '0';
+      out_buf[out_n++] = ' ';
+    }
+    IM_ASSERT(out_n < IM_ARRAYSIZE(out_buf));
+    out_buf[out_n] = 0;
+    return out_buf;
+  }
+
+  // [Internal]
+  void DrawPreviewData(size_t addr, const ImU8* mem_data, size_t mem_size,
+                       ImGuiDataType data_type, DataFormat data_format,
+                       char* out_buf, size_t out_buf_size) const {
+    uint8_t buf[8];
+    size_t elem_size = DataTypeGetSize(data_type);
+    size_t size = addr + elem_size > mem_size ? mem_size - addr : elem_size;
+    if (ReadFn)
+      for (int i = 0, n = (int)size; i < n; ++i)
+        buf[i] = ReadFn(mem_data, addr + i);
+    else
+      memcpy(buf, mem_data + addr, size);
+
+    if (data_format == DataFormat_Bin) {
+      uint8_t binbuf[8];
+      EndianessCopy(binbuf, buf, size);
+      ImSnprintf(out_buf, out_buf_size, "%s",
+                 FormatBinary(binbuf, (int)size * 8));
+      return;
+    }
+
+    out_buf[0] = 0;
+    switch (data_type) {
+      case ImGuiDataType_S8: {
+        int8_t int8 = 0;
+        EndianessCopy(&int8, buf, size);
+        if (data_format == DataFormat_Dec) {
+          ImSnprintf(out_buf, out_buf_size, "%hhd", int8);
+          return;
+        }
+        if (data_format == DataFormat_Hex) {
+          ImSnprintf(out_buf, out_buf_size, "0x%02x", int8 & 0xFF);
+          return;
+        }
+        break;
+      }
+      case ImGuiDataType_U8: {
+        uint8_t uint8 = 0;
+        EndianessCopy(&uint8, buf, size);
+        if (data_format == DataFormat_Dec) {
+          ImSnprintf(out_buf, out_buf_size, "%hhu", uint8);
+          return;
+        }
+        if (data_format == DataFormat_Hex) {
+          ImSnprintf(out_buf, out_buf_size, "0x%02x", uint8 & 0xFF);
+          return;
+        }
+        break;
+      }
+      case ImGuiDataType_S16: {
+        int16_t int16 = 0;
+        EndianessCopy(&int16, buf, size);
+        if (data_format == DataFormat_Dec) {
+          ImSnprintf(out_buf, out_buf_size, "%hd", int16);
+          return;
+        }
+        if (data_format == DataFormat_Hex) {
+          ImSnprintf(out_buf, out_buf_size, "0x%04x", int16 & 0xFFFF);
+          return;
+        }
+        break;
+      }
+      case ImGuiDataType_U16: {
+        uint16_t uint16 = 0;
+        EndianessCopy(&uint16, buf, size);
+        if (data_format == DataFormat_Dec) {
+          ImSnprintf(out_buf, out_buf_size, "%hu", uint16);
+          return;
+        }
+        if (data_format == DataFormat_Hex) {
+          ImSnprintf(out_buf, out_buf_size, "0x%04x", uint16 & 0xFFFF);
+          return;
+        }
+        break;
+      }
+      case ImGuiDataType_S32: {
+        int32_t int32 = 0;
+        EndianessCopy(&int32, buf, size);
+        if (data_format == DataFormat_Dec) {
+          ImSnprintf(out_buf, out_buf_size, "%d", int32);
+          return;
+        }
+        if (data_format == DataFormat_Hex) {
+          ImSnprintf(out_buf, out_buf_size, "0x%08x", int32);
+          return;
+        }
+        break;
+      }
+      case ImGuiDataType_U32: {
+        uint32_t uint32 = 0;
+        EndianessCopy(&uint32, buf, size);
+        if (data_format == DataFormat_Dec) {
+          ImSnprintf(out_buf, out_buf_size, "%u", uint32);
+          return;
+        }
+        if (data_format == DataFormat_Hex) {
+          ImSnprintf(out_buf, out_buf_size, "0x%08x", uint32);
+          return;
+        }
+        break;
+      }
+      case ImGuiDataType_S64: {
+        int64_t int64 = 0;
+        EndianessCopy(&int64, buf, size);
+        if (data_format == DataFormat_Dec) {
+          ImSnprintf(out_buf, out_buf_size, "%lld", (long long)int64);
+          return;
+        }
+        if (data_format == DataFormat_Hex) {
+          ImSnprintf(out_buf, out_buf_size, "0x%016llx", (long long)int64);
+          return;
+        }
+        break;
+      }
+      case ImGuiDataType_U64: {
+        uint64_t uint64 = 0;
+        EndianessCopy(&uint64, buf, size);
+        if (data_format == DataFormat_Dec) {
+          ImSnprintf(out_buf, out_buf_size, "%llu", (unsigned long long)uint64);
+          return;
+        }
+        if (data_format == DataFormat_Hex) {
+          ImSnprintf(out_buf, out_buf_size, "0x%016llx",
+                     (unsigned long long)uint64);
+          return;
+        }
+        break;
+      }
+      case ImGuiDataType_Float: {
+        float float32 = 0.0f;
+        EndianessCopy(&float32, buf, size);
+        if (data_format == DataFormat_Dec) {
+          ImSnprintf(out_buf, out_buf_size, "%f", float32);
+          return;
+        }
+        if (data_format == DataFormat_Hex) {
+          ImSnprintf(out_buf, out_buf_size, "%a", float32);
+          return;
+        }
+        break;
+      }
+      case ImGuiDataType_Double: {
+        double float64 = 0.0;
+        EndianessCopy(&float64, buf, size);
+        if (data_format == DataFormat_Dec) {
+          ImSnprintf(out_buf, out_buf_size, "%f", float64);
+          return;
+        }
+        if (data_format == DataFormat_Hex) {
+          ImSnprintf(out_buf, out_buf_size, "%a", float64);
+          return;
+        }
+        break;
+      }
+      case ImGuiDataType_COUNT:
+        break;
+    }  // Switch
+  }
+};
+
+}  // namespace viz
+}  // namespace afs
+
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif

apps/studio/src/widgets/sample_review.cc

@@ -0,0 +1,385 @@
+#include "sample_review.h"
+#include <imgui.h>
+#include <algorithm>
+#include <fstream>
+#include <sstream>
+#include <filesystem>
+#include "../core/filesystem.h"
+#include "../core/logger.h"
+
+namespace afs {
+namespace viz {
+
+namespace {
+
+TrainingSample ParseSampleLine(const std::string& line, bool is_rejected = false) {
+  TrainingSample sample;
+  sample.is_rejected = is_rejected;
+
+  try {
+    auto j = nlohmann::json::parse(line);
+
+    sample.instruction = j.value("instruction", "");
+    sample.input = j.value("input", "");
+    sample.output = j.value("output", "");
+    sample.domain = j.value("domain", "unknown");
+    sample.source = j.value("source", "");
+
+    if (is_rejected) {
+      if (j.contains("rejection_reason")) {
+        sample.rejection_reason = j["rejection_reason"];
+      }
+      if (j.contains("quality_score")) {
+        sample.quality_score = j["quality_score"];
+      }
+      if (j.contains("rejection_details")) {
+        sample.rejection_details = j["rejection_details"];
+      }
+    }
+  } catch (...) {
+    // Skip malformed lines
+  }
+
+  return sample;
+}
+
+}  // namespace
+
+SampleReviewWidget::SampleReviewWidget() {}
+
+bool SampleReviewWidget::LoadDataset(const std::filesystem::path& dataset_dir) {
+  dataset_dir_ = dataset_dir;
+  accepted_samples_.clear();
+  rejected_samples_.clear();
+
+  // Load rejected samples
+  auto rejected_file = dataset_dir / "rejected.jsonl";
+  if (studio::core::FileSystem::Exists(rejected_file)) {
+    std::ifstream f(rejected_file);
+    if (f.is_open()) {
+        std::string line;
+        while (std::getline(f, line)) {
+          if (!line.empty()) {
+            rejected_samples_.push_back(ParseSampleLine(line, true));
+          }
+        }
+    }
+  }
+
+  // Load accepted samples
+  auto train_file = dataset_dir / "train.jsonl";
+  if (studio::core::FileSystem::Exists(train_file)) {
+    std::ifstream f(train_file);
+    if (f.is_open()) {
+        std::string line;
+        while (std::getline(f, line)) {
+          if (!line.empty()) {
+            accepted_samples_.push_back(ParseSampleLine(line, false));
+          }
+        }
+    }
+  }
+
+  return !accepted_samples_.empty() || !rejected_samples_.empty();
+}
+
+void SampleReviewWidget::Render(bool* p_open) {
+  ImGui::SetNextWindowSize(ImVec2(1400, 800), ImGuiCond_FirstUseEver);
+
+  if (!ImGui::Begin("Sample Review & Annotation", p_open)) {
+    ImGui::End();
+    return;
+  }
+
+  // Header stats
+  ImGui::Text("Dataset: %s", dataset_dir_.filename().c_str());
+  ImGui::SameLine(0, 20);
+  ImGui::Text("Accepted: %zu", accepted_samples_.size());
+  ImGui::SameLine(0, 20);
+  ImGui::Text("Rejected: %zu", rejected_samples_.size());
+
+  ImGui::Separator();
+
+  // Main layout: 3 columns
+  ImGui::Columns(3, "review_layout", true);
+
+  // Left: Sample Browser
+  RenderSampleBrowser();
+
+  ImGui::NextColumn();
+
+  // Middle: Sample Viewer
+  RenderSampleViewer();
+
+  ImGui::NextColumn();
+
+  // Right: Context Reference + Feedback
+  RenderContextReference();
+  ImGui::Spacing();
+  RenderFeedbackPanel();
+
+  ImGui::Columns(1);
+
+  ImGui::End();
+}
+
+void SampleReviewWidget::RenderSampleBrowser() {
+  ImGui::Text("Sample Browser");
+  ImGui::Separator();
+
+  // Filters
+  ImGui::Checkbox("Show Rejected", &show_rejected_);
+  ImGui::SameLine();
+  ImGui::Checkbox("Show Accepted", &show_accepted_);
+
+  ImGui::InputText("Domain", domain_filter_, sizeof(domain_filter_));
+  ImGui::InputText("Reason", reason_filter_, sizeof(reason_filter_));
+  ImGui::SliderFloat("Min Score", &min_quality_score_, 0.0f, 1.0f);
+
+  ImGui::Separator();
+
+  // Sample list
+  ImGui::BeginChild("SampleList", ImVec2(0, -30), true);
+
+  auto render_samples = [&](const std::vector<TrainingSample>& samples, const char* label) {
+    if (ImGui::TreeNodeEx(label, ImGuiTreeNodeFlags_DefaultOpen)) {
+      for (size_t i = 0; i < samples.size(); ++i) {
+        const auto& sample = samples[i];
+
+        // Apply filters
+        if (domain_filter_[0] != '\0' && sample.domain.find(domain_filter_) == std::string::npos) continue;
+        if (sample.quality_score && *sample.quality_score < min_quality_score_) continue;
+
+        char label_buf[256];
+        snprintf(label_buf, sizeof(label_buf), "[%s] %s##%zu",
+                 sample.domain.c_str(),
+                 sample.instruction.substr(0, 40).c_str(),
+                 i);
+
+        if (ImGui::Selectable(label_buf, (int)i == current_sample_idx_)) {
+          current_sample_idx_ = i;
+        }
+
+        // Show quality score if available
+        if (sample.quality_score) {
+          ImGui::SameLine();
+          ImGui::TextDisabled("%.3f", *sample.quality_score);
+        }
+      }
+      ImGui::TreePop();
+    }
+  };
+
+  if (show_rejected_) {
+    render_samples(rejected_samples_, "Rejected Samples");
+  }
+
+  if (show_accepted_) {
+    render_samples(accepted_samples_, "Accepted Samples");
+  }
+
+  ImGui::EndChild();
+
+  // Navigation
+  if (ImGui::Button("< Prev")) {
+    current_sample_idx_ = std::max(0, current_sample_idx_ - 1);
+  }
+  ImGui::SameLine();
+  if (ImGui::Button("Next >")) {
+    current_sample_idx_++;
+  }
+}
+
+void SampleReviewWidget::RenderSampleViewer() {
+  ImGui::Text("Sample Details");
+  ImGui::Separator();
+
+  if (rejected_samples_.empty() && accepted_samples_.empty()) {
+    ImGui::TextDisabled("No samples loaded");
+    return;
+  }
+
+  // Get current sample
+  const TrainingSample* sample = nullptr;
+  if (current_sample_idx_ < (int)rejected_samples_.size()) {
+    sample = &rejected_samples_[current_sample_idx_];
+  } else if (current_sample_idx_ < (int)(rejected_samples_.size() + accepted_samples_.size())) {
+    sample = &accepted_samples_[current_sample_idx_ - rejected_samples_.size()];
+  }
+
+  if (!sample) {
+    ImGui::TextDisabled("No sample selected");
+    return;
+  }
+
+  // Metadata
+  ImGui::Text("Domain: %s", sample->domain.c_str());
+  ImGui::SameLine(0, 20);
+  ImGui::Text("Source: %s", sample->source.c_str());
+
+  if (sample->is_rejected) {
+    ImGui::TextColored(ImVec4(1.0f, 0.3f, 0.3f, 1.0f), "REJECTED");
+    if (sample->rejection_reason) {
+      ImGui::SameLine();
+      ImGui::Text("- %s", sample->rejection_reason->c_str());
+    }
+    if (sample->quality_score) {
+      ImGui::SameLine();
+      ImGui::Text("(score: %.3f)", *sample->quality_score);
+    }
+  } else {
+    ImGui::TextColored(ImVec4(0.3f, 1.0f, 0.3f, 1.0f), "ACCEPTED");
+  }
+
+  ImGui::Separator();
+
+  // Content
+  ImGui::BeginChild("SampleContent", ImVec2(0, 0), true);
+
+  ImGui::TextColored(ImVec4(0.6f, 0.8f, 1.0f, 1.0f), "Instruction:");
+  ImGui::TextWrapped("%s", sample->instruction.c_str());
+
+  ImGui::Spacing();
+
+  if (!sample->input.empty()) {
+    ImGui::TextColored(ImVec4(0.8f, 0.8f, 0.6f, 1.0f), "Input:");
+    ImGui::TextWrapped("%s", sample->input.c_str());
+    ImGui::Spacing();
+  }
+
+  ImGui::TextColored(ImVec4(0.6f, 1.0f, 0.6f, 1.0f), "Output:");
+  ImGui::TextWrapped("%s", sample->output.c_str());
+
+  // Rejection details
+  if (sample->rejection_details) {
+    ImGui::Spacing();
+    ImGui::Separator();
+    ImGui::TextColored(ImVec4(1.0f, 0.6f, 0.6f, 1.0f), "Rejection Details:");
+
+    auto& details = *sample->rejection_details;
+    if (details.contains("threshold")) {
+      ImGui::Text("Threshold: %.3f", details["threshold"].get<float>());
+    }
+    if (details.contains("diversity")) {
+      ImGui::Text("Diversity: %.3f", details["diversity"].get<float>());
+    }
+    if (details.contains("kg_consistency")) {
+      ImGui::Text("KG Consistency: %.3f", details["kg_consistency"].get<float>());
+    }
+    if (details.contains("hallucination_risk")) {
+      ImGui::Text("Hallucination Risk: %.3f", details["hallucination_risk"].get<float>());
+    }
+    if (details.contains("coherence")) {
+      ImGui::Text("Coherence: %.3f", details["coherence"].get<float>());
+    }
+  }
+
+  ImGui::EndChild();
+}
+
+void SampleReviewWidget::RenderContextReference() {
+  ImGui::Text("Reference Context");
+  ImGui::Separator();
+
+  ImGui::InputText("Search ASM", context_search_, sizeof(context_search_));
+
+  if (ImGui::Button("Load My ASM Files")) {
+    LoadContextFiles();
+  }
+
+  ImGui::BeginChild("ContextFiles", ImVec2(0, 200), true);
+
+  for (const auto& file : context_files_) {
+    if (ImGui::Selectable(file.filename().c_str())) {
+      std::ifstream f(file);
+      std::stringstream ss;
+      ss << f.rdbuf();
+      selected_context_content_ = ss.str();
+    }
+  }
+
+  ImGui::EndChild();
+
+  if (!selected_context_content_.empty()) {
+    ImGui::Text("Context Preview:");
+    ImGui::BeginChild("ContextPreview", ImVec2(0, 150), true);
+    ImGui::TextWrapped("%s", selected_context_content_.substr(0, 500).c_str());
+    ImGui::EndChild();
+  }
+}
+
+void SampleReviewWidget::RenderFeedbackPanel() {
+  ImGui::Text("User Feedback");
+  ImGui::Separator();
+
+  ImGui::InputTextMultiline("##feedback", feedback_buffer_, sizeof(feedback_buffer_),
+                            ImVec2(-1, 100));
+
+  if (ImGui::Button("✓ Approve (Use as Golden Example)", ImVec2(-1, 0))) {
+    ApproveCurrentSample();
+  }
+
+  if (ImGui::Button("✗ Reject (Bad Sample)", ImVec2(-1, 0))) {
+    RejectCurrentSample(feedback_buffer_);
+  }
+
+  ImGui::Spacing();
+
+  if (ImGui::Button("Save All Annotations", ImVec2(-1, 0))) {
+    SaveAnnotations();
+  }
+}
+
+void SampleReviewWidget::LoadContextFiles() {
+  context_files_.clear();
+
+  // Load user's ASM files from alttp disassembly
+  auto alttp_path = std::filesystem::path(std::getenv("HOME")) / ".context" / "knowledge" / "alttp";
+
+  if (studio::core::FileSystem::Exists(alttp_path)) {
+      try {
+        std::error_code ec;
+        for (const auto& entry : std::filesystem::recursive_directory_iterator(alttp_path, ec)) {
+          std::error_code entry_ec;
+          if (!ec && entry.is_regular_file(entry_ec) && entry.path().extension() == ".asm") {
+            context_files_.push_back(entry.path());
+          }
+        }
+      } catch (...) {
+        LOG_WARN("Error during recursive ASM search in " + alttp_path.string());
+      }
+  }
+}
+
+void SampleReviewWidget::ApproveCurrentSample() {
+  // Mark current sample as user-approved golden example
+  // This will be saved to a separate file
+}
+
+void SampleReviewWidget::RejectCurrentSample(const std::string& reason) {
+  // Mark current sample as user-rejected with feedback
+}
+
+void SampleReviewWidget::SaveAnnotations() {
+  auto annotations_file = dataset_dir_ / "user_annotations.json";
+
+  nlohmann::json annotations = nlohmann::json::array();
+
+  // Save approved/rejected samples with user feedback
+  for (const auto& sample : rejected_samples_) {
+    if (sample.user_approved || !sample.user_feedback.empty()) {
+      annotations.push_back({
+        {"instruction", sample.instruction},
+        {"domain", sample.domain},
+        {"user_approved", sample.user_approved},
+        {"user_feedback", sample.user_feedback}
+      });
+    }
+  }
+
+  std::ofstream f(annotations_file);
+  f << annotations.dump(2);
+}
+
+}  // namespace viz
+}  // namespace afs

apps/studio/src/widgets/sample_review.h

@@ -0,0 +1,75 @@
+#pragma once
+
+#include <string>
+#include <vector>
+#include <optional>
+#include <filesystem>
+#include <nlohmann/json.hpp>
+
+namespace afs {
+namespace viz {
+
+struct TrainingSample {
+  std::string instruction;
+  std::string input;
+  std::string output;
+  std::string domain;
+  std::string source;
+
+  // For rejected samples
+  std::optional<std::string> rejection_reason;
+  std::optional<float> quality_score;
+  std::optional<nlohmann::json> rejection_details;
+
+  bool is_rejected = false;
+  bool user_approved = false;
+  std::string user_feedback;
+};
+
+class SampleReviewWidget {
+ public:
+  SampleReviewWidget();
+
+  /// Load samples from dataset directory
+  bool LoadDataset(const std::filesystem::path& dataset_dir);
+
+  /// Render the review window
+  void Render(bool* p_open = nullptr);
+
+  /// Save user annotations/approvals
+  void SaveAnnotations();
+
+ private:
+  void RenderSampleBrowser();
+  void RenderSampleViewer();
+  void RenderContextReference();
+  void RenderFeedbackPanel();
+
+  void LoadContextFiles();
+  void ApproveCurrentSample();
+  void RejectCurrentSample(const std::string& reason);
+
+  // Data
+  std::vector<TrainingSample> accepted_samples_;
+  std::vector<TrainingSample> rejected_samples_;
+  std::filesystem::path dataset_dir_;
+
+  // UI State
+  int current_sample_idx_ = 0;
+  bool show_rejected_ = true;
+  bool show_accepted_ = true;
+  char feedback_buffer_[1024] = {0};
+  char context_search_[256] = {0};
+
+  // Filters
+  char domain_filter_[128] = {0};
+  char reason_filter_[128] = {0};
+  float min_quality_score_ = 0.0f;
+
+  // Context files (user's ASM for reference)
+  std::vector<std::filesystem::path> context_files_;
+  std::string selected_context_content_;
+};
+
+}  // namespace viz
+}  // namespace afs

apps/studio/src/widgets/text_editor.h

@@ -0,0 +1,391 @@
+#ifndef YAZE_APP_GUI_MODULES_TEXT_EDITOR_H
+#define YAZE_APP_GUI_MODULES_TEXT_EDITOR_H
+
+// Originally from ImGuiColorTextEdit/TextEditor.h
+
+#include <array>
+#include <map>
+#include <memory>
+#include <regex>
+#include <string>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "imgui.h"
+
+class TextEditor {
+ public:
+  enum class PaletteIndex {
+    Default,
+    Keyword,
+    Number,
+    String,
+    CharLiteral,
+    Punctuation,
+    Preprocessor,
+    Identifier,
+    KnownIdentifier,
+    PreprocIdentifier,
+    Comment,
+    MultiLineComment,
+    Background,
+    Cursor,
+    Selection,
+    ErrorMarker,
+    Breakpoint,
+    LineNumber,
+    CurrentLineFill,
+    CurrentLineFillInactive,
+    CurrentLineEdge,
+    Max
+  };
+
+  enum class SelectionMode { Normal, Word, Line };
+
+  struct Breakpoint {
+    int mLine;
+    bool mEnabled;
+    std::string mCondition;
+
+    Breakpoint() : mLine(-1), mEnabled(false) {}
+  };
+
+  // Represents a character coordinate from the user's point of view,
+  // i. e. consider an uniform grid (assuming fixed-width font) on the
+  // screen as it is rendered, and each cell has its own coordinate, starting
+  // from 0. Tabs are counted as [1..mTabSize] count empty spaces, depending on
+  // how many space is necessary to reach the next tab stop.
+  // For example, coordinate (1, 5) represents the character 'B' in a line
+  // "\tABC", when mTabSize = 4, because it is rendered as "    ABC" on the
+  // screen.
+  struct Coordinates {
+    int mLine, mColumn;
+    Coordinates() : mLine(0), mColumn(0) {}
+    Coordinates(int aLine, int aColumn) : mLine(aLine), mColumn(aColumn) {
+      assert(aLine >= 0);
+      assert(aColumn >= 0);
+    }
+    static Coordinates Invalid() {
+      static Coordinates invalid(-1, -1);
+      return invalid;
+    }
+
+    bool operator==(const Coordinates& o) const {
+      return mLine == o.mLine && mColumn == o.mColumn;
+    }
+
+    bool operator!=(const Coordinates& o) const {
+      return mLine != o.mLine || mColumn != o.mColumn;
+    }
+
+    bool operator<(const Coordinates& o) const {
+      if (mLine != o.mLine)
+        return mLine < o.mLine;
+      return mColumn < o.mColumn;
+    }
+
+    bool operator>(const Coordinates& o) const {
+      if (mLine != o.mLine)
+        return mLine > o.mLine;
+      return mColumn > o.mColumn;
+    }
+
+    bool operator<=(const Coordinates& o) const {
+      if (mLine != o.mLine)
+        return mLine < o.mLine;
+      return mColumn <= o.mColumn;
+    }
+
+    bool operator>=(const Coordinates& o) const {
+      if (mLine != o.mLine)
+        return mLine > o.mLine;
+      return mColumn >= o.mColumn;
+    }
+  };
+
+  struct Identifier {
+    Coordinates mLocation;
+    std::string mDeclaration;
+  };
+
+  typedef std::string String;
+  typedef std::unordered_map<std::string, Identifier> Identifiers;
+  typedef std::unordered_set<std::string> Keywords;
+  typedef std::map<int, std::string> ErrorMarkers;
+  typedef std::unordered_set<int> Breakpoints;
+  typedef std::array<ImU32, (unsigned)PaletteIndex::Max> Palette;
+  typedef uint8_t Char;
+
+  struct Glyph {
+    Char mChar;
+    PaletteIndex mColorIndex = PaletteIndex::Default;
+    bool mComment : 1;
+    bool mMultiLineComment : 1;
+    bool mPreprocessor : 1;
+
+    Glyph(Char aChar, PaletteIndex aColorIndex)
+        : mChar(aChar),
+          mColorIndex(aColorIndex),
+          mComment(false),
+          mMultiLineComment(false),
+          mPreprocessor(false) {}
+  };
+
+  typedef std::vector<Glyph> Line;
+  typedef std::vector<Line> Lines;
+
+  struct LanguageDefinition {
+    typedef std::pair<std::string, PaletteIndex> TokenRegexString;
+    typedef std::vector<TokenRegexString> TokenRegexStrings;
+    typedef bool (*TokenizeCallback)(const char* in_begin, const char* in_end,
+                                     const char*& out_begin,
+                                     const char*& out_end,
+                                     PaletteIndex& paletteIndex);
+
+    std::string mName;
+    Keywords mKeywords;
+    Identifiers mIdentifiers;
+    Identifiers mPreprocIdentifiers;
+    std::string mCommentStart, mCommentEnd, mSingleLineComment;
+    char mPreprocChar;
+    bool mAutoIndentation;
+
+    TokenizeCallback mTokenize;
+
+    TokenRegexStrings mTokenRegexStrings;
+
+    bool mCaseSensitive;
+
+    LanguageDefinition()
+        : mPreprocChar('#'),
+          mAutoIndentation(true),
+          mTokenize(nullptr),
+          mCaseSensitive(true) {}
+
+    static const LanguageDefinition& CPlusPlus();
+    static const LanguageDefinition& HLSL();
+    static const LanguageDefinition& GLSL();
+    static const LanguageDefinition& C();
+    static const LanguageDefinition& SQL();
+    static const LanguageDefinition& AngelScript();
+    static const LanguageDefinition& Lua();
+  };
+
+  TextEditor();
+  ~TextEditor();
+
+  void SetLanguageDefinition(const LanguageDefinition& aLanguageDef);
+  const LanguageDefinition& GetLanguageDefinition() const {
+    return mLanguageDefinition;
+  }
+
+  const Palette& GetPalette() const { return mPaletteBase; }
+  void SetPalette(const Palette& aValue);
+
+  void SetErrorMarkers(const ErrorMarkers& aMarkers) {
+    mErrorMarkers = aMarkers;
+  }
+  void SetBreakpoints(const Breakpoints& aMarkers) { mBreakpoints = aMarkers; }
+
+  void Render(const char* aTitle, const ImVec2& aSize = ImVec2(),
+              bool aBorder = false);
+  void SetText(const std::string& aText);
+  std::string GetText() const;
+
+  void SetTextLines(const std::vector<std::string>& aLines);
+  std::vector<std::string> GetTextLines() const;
+
+  std::string GetSelectedText() const;
+  std::string GetCurrentLineText() const;
+
+  int GetTotalLines() const { return (int)mLines.size(); }
+  bool IsOverwrite() const { return mOverwrite; }
+
+  void SetReadOnly(bool aValue);
+  bool IsReadOnly() const { return mReadOnly; }
+  bool IsTextChanged() const { return mTextChanged; }
+  bool IsCursorPositionChanged() const { return mCursorPositionChanged; }
+
+  bool IsColorizerEnabled() const { return mColorizerEnabled; }
+  void SetColorizerEnable(bool aValue);
+
+  Coordinates GetCursorPosition() const { return GetActualCursorCoordinates(); }
+  void SetCursorPosition(const Coordinates& aPosition);
+
+  inline void SetHandleMouseInputs(bool aValue) { mHandleMouseInputs = aValue; }
+  inline bool IsHandleMouseInputsEnabled() const {
+    return mHandleKeyboardInputs;
+  }
+
+  inline void SetHandleKeyboardInputs(bool aValue) {
+    mHandleKeyboardInputs = aValue;
+  }
+  inline bool IsHandleKeyboardInputsEnabled() const {
+    return mHandleKeyboardInputs;
+  }
+
+  inline void SetImGuiChildIgnored(bool aValue) { mIgnoreImGuiChild = aValue; }
+  inline bool IsImGuiChildIgnored() const { return mIgnoreImGuiChild; }
+
+  inline void SetShowWhitespaces(bool aValue) { mShowWhitespaces = aValue; }
+  inline bool IsShowingWhitespaces() const { return mShowWhitespaces; }
+
+  void SetTabSize(int aValue);
+  inline int GetTabSize() const { return mTabSize; }
+
+  void InsertText(const std::string& aValue);
+  void InsertText(const char* aValue);
+
+  void MoveUp(int aAmount = 1, bool aSelect = false);
+  void MoveDown(int aAmount = 1, bool aSelect = false);
+  void MoveLeft(int aAmount = 1, bool aSelect = false, bool aWordMode = false);
+  void MoveRight(int aAmount = 1, bool aSelect = false, bool aWordMode = false);
+  void MoveTop(bool aSelect = false);
+  void MoveBottom(bool aSelect = false);
+  void MoveHome(bool aSelect = false);
+  void MoveEnd(bool aSelect = false);
+
+  void SetSelectionStart(const Coordinates& aPosition);
+  void SetSelectionEnd(const Coordinates& aPosition);
+  void SetSelection(const Coordinates& aStart, const Coordinates& aEnd,
+                    SelectionMode aMode = SelectionMode::Normal);
+  void SelectWordUnderCursor();
+  void SelectAll();
+  bool HasSelection() const;
+
+  void Copy();
+  void Cut();
+  void Paste();
+  void Delete();
+
+  bool CanUndo() const;
+  bool CanRedo() const;
+  void Undo(int aSteps = 1);
+  void Redo(int aSteps = 1);
+
+  static const Palette& GetDarkPalette();
+  static const Palette& GetLightPalette();
+  static const Palette& GetRetroBluePalette();
+
+ private:
+  typedef std::vector<std::pair<std::regex, PaletteIndex>> RegexList;
+
+  struct EditorState {
+    Coordinates mSelectionStart;
+    Coordinates mSelectionEnd;
+    Coordinates mCursorPosition;
+  };
+
+  class UndoRecord {
+   public:
+    UndoRecord() {}
+    ~UndoRecord() {}
+
+    UndoRecord(const std::string& aAdded,
+               const TextEditor::Coordinates aAddedStart,
+               const TextEditor::Coordinates aAddedEnd,
+
+               const std::string& aRemoved,
+               const TextEditor::Coordinates aRemovedStart,
+               const TextEditor::Coordinates aRemovedEnd,
+
+               TextEditor::EditorState& aBefore,
+               TextEditor::EditorState& aAfter);
+
+    void Undo(TextEditor* aEditor);
+    void Redo(TextEditor* aEditor);
+
+    std::string mAdded;
+    Coordinates mAddedStart;
+    Coordinates mAddedEnd;
+
+    std::string mRemoved;
+    Coordinates mRemovedStart;
+    Coordinates mRemovedEnd;
+
+    EditorState mBefore;
+    EditorState mAfter;
+  };
+
+  typedef std::vector<UndoRecord> UndoBuffer;
+
+  void ProcessInputs();
+  void Colorize(int aFromLine = 0, int aCount = -1);
+  void ColorizeRange(int aFromLine = 0, int aToLine = 0);
+  void ColorizeInternal();
+  float TextDistanceToLineStart(const Coordinates& aFrom) const;
+  void EnsureCursorVisible();
+  int GetPageSize() const;
+  std::string GetText(const Coordinates& aStart, const Coordinates& aEnd) const;
+  Coordinates GetActualCursorCoordinates() const;
+  Coordinates SanitizeCoordinates(const Coordinates& aValue) const;
+  void Advance(Coordinates& aCoordinates) const;
+  void DeleteRange(const Coordinates& aStart, const Coordinates& aEnd);
+  int InsertTextAt(Coordinates& aWhere, const char* aValue);
+  void AddUndo(UndoRecord& aValue);
+  Coordinates ScreenPosToCoordinates(const ImVec2& aPosition) const;
+  Coordinates FindWordStart(const Coordinates& aFrom) const;
+  Coordinates FindWordEnd(const Coordinates& aFrom) const;
+  Coordinates FindNextWord(const Coordinates& aFrom) const;
+  int GetCharacterIndex(const Coordinates& aCoordinates) const;
+  int GetCharacterColumn(int aLine, int aIndex) const;
+  int GetLineCharacterCount(int aLine) const;
+  int GetLineMaxColumn(int aLine) const;
+  bool IsOnWordBoundary(const Coordinates& aAt) const;
+  void RemoveLine(int aStart, int aEnd);
+  void RemoveLine(int aIndex);
+  Line& InsertLine(int aIndex);
+  void EnterCharacter(ImWchar aChar, bool aShift);
+  void Backspace();
+  void DeleteSelection();
+  std::string GetWordUnderCursor() const;
+  std::string GetWordAt(const Coordinates& aCoords) const;
+  ImU32 GetGlyphColor(const Glyph& aGlyph) const;
+
+  void HandleKeyboardInputs();
+  void HandleMouseInputs();
+  void Render();
+
+  float mLineSpacing;
+  Lines mLines;
+  EditorState mState;
+  UndoBuffer mUndoBuffer;
+  int mUndoIndex;
+
+  int mTabSize;
+  bool mOverwrite;
+  bool mReadOnly;
+  bool mWithinRender;
+  bool mScrollToCursor;
+  bool mScrollToTop;
+  bool mTextChanged;
+  bool mColorizerEnabled;
+  float mTextStart;  // position (in pixels) where a code line starts relative
+                     // to the left of the TextEditor.
+  int mLeftMargin;
+  bool mCursorPositionChanged;
+  int mColorRangeMin, mColorRangeMax;
+  SelectionMode mSelectionMode;
+  bool mHandleKeyboardInputs;
+  bool mHandleMouseInputs;
+  bool mIgnoreImGuiChild;
+  bool mShowWhitespaces;
+
+  Palette mPaletteBase;
+  Palette mPalette;
+  LanguageDefinition mLanguageDefinition;
+  RegexList mRegexList;
+
+  bool mCheckComments;
+  Breakpoints mBreakpoints;
+  ErrorMarkers mErrorMarkers;
+  ImVec2 mCharAdvance;
+  Coordinates mInteractiveStart, mInteractiveEnd;
+  std::string mLineBuffer;
+  uint64_t mStartTime;
+
+  float mLastClick;
+};
+
+#endif  // YAZE_APP_GUI_MODULES_TEXT_EDITOR_H

apps/studio/src/widgets/training_status.cpp

@@ -0,0 +1,352 @@
+/**
+ * @file training_status.cpp
+ * @brief Implementation of training campaign status monitoring widget
+ */
+
+#include "training_status.h"
+#include <cstdlib>
+#include <sstream>
+#include <fstream>
+#include <iostream>
+#include <iomanip>
+#include <filesystem>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+namespace afs {
+namespace viz {
+
+TrainingStatusWidget::TrainingStatusWidget()
+    : last_update_(std::chrono::steady_clock::now()) {
+    // Initial update
+    Update();
+}
+
+void TrainingStatusWidget::Render(bool* p_open) {
+    if (!p_open || !*p_open) {
+        return;
+    }
+
+    // Auto-update check
+    auto now = std::chrono::steady_clock::now();
+    auto elapsed = std::chrono::duration_cast<std::chrono::seconds>(now - last_update_).count();
+
+    if (auto_update_ && elapsed >= static_cast<int>(update_interval_)) {
+        Update();
+    }
+
+    // Main window
+    ImGui::SetNextWindowSize(ImVec2(800, 600), ImGuiCond_FirstUseEver);
+    if (!ImGui::Begin("Training Campaign Status", p_open)) {
+        ImGui::End();
+        return;
+    }
+
+    // Header with timestamp
+    ImGui::Text("Last Update: %s", FormatTimestamp(health_.campaign ? health_.campaign->last_update : "").c_str());
+    ImGui::SameLine(ImGui::GetWindowWidth() - 150);
+    if (ImGui::Button("Refresh Now")) {
+        Update();
+    }
+
+    ImGui::SameLine();
+    ImGui::Checkbox("Auto", &auto_update_);
+
+    ImGui::Separator();
+
+    // Error message if any
+    if (!error_message_.empty()) {
+        ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(1.0f, 0.3f, 0.3f, 1.0f));
+        ImGui::TextWrapped("Error: %s", error_message_.c_str());
+        ImGui::PopStyleColor();
+        ImGui::Separator();
+    }
+
+    // Sections in columns
+    ImGui::BeginChild("StatusSections", ImVec2(0, 0), false);
+
+    // Campaign section
+    RenderCampaignSection();
+    ImGui::Spacing();
+    ImGui::Separator();
+    ImGui::Spacing();
+
+    // System resources section
+    RenderSystemResourcesSection();
+    ImGui::Spacing();
+    ImGui::Separator();
+    ImGui::Spacing();
+
+    // Services section
+    RenderServicesSection();
+    ImGui::Spacing();
+    ImGui::Separator();
+    ImGui::Spacing();
+
+    // Issues section
+    RenderIssuesSection();
+
+    ImGui::EndChild();
+
+    ImGui::End();
+}
+
+void TrainingStatusWidget::Update() {
+    if (FetchHealthData()) {
+        last_update_ = std::chrono::steady_clock::now();
+        error_message_.clear();
+    }
+}
+
+bool TrainingStatusWidget::FetchHealthData() {
+    // Execute Python health check script
+    const char* env_root = std::getenv("AFS_ROOT");
+    std::string root;
+    if (env_root && env_root[0] != '\0') {
+        root = env_root;
+    } else {
+        const char* home = std::getenv("HOME");
+        if (home && home[0] != '\0') {
+            root = std::string(home) + "/src/trunk/scawful/research/afs";
+        }
+    }
+
+    if (root.empty()) {
+        std::error_code ec;
+        root = std::filesystem::current_path(ec).string();
+    }
+
+    if (root.empty()) {
+        error_message_ = "Unable to resolve AFS root path";
+        return false;
+    }
+
+    std::string cmd = "cd \"" + root + "\" && PYTHONPATH=src .venv/bin/python -m agents.training.health_check --json 2>/dev/null";
+
+    FILE* pipe = popen(cmd.c_str(), "r");
+    if (!pipe) {
+        error_message_ = "Failed to execute health check command";
+        return false;
+    }
+
+    // Read output
+    std::stringstream buffer;
+    char line[256];
+    while (fgets(line, sizeof(line), pipe)) {
+        buffer << line;
+    }
+
+    int status = pclose(pipe);
+    if (status != 0) {
+        error_message_ = "Health check command failed with status " + std::to_string(status);
+        return false;
+    }
+
+    // Parse JSON
+    std::string json_str = buffer.str();
+    return ParseHealthJSON(json_str);
+}
+
+bool TrainingStatusWidget::ParseHealthJSON(const std::string& json_str) {
+    try {
+        auto j = json::parse(json_str);
+
+        // Parse campaign status
+        if (j.contains("campaign") && !j["campaign"].is_null()) {
+            CampaignStatus campaign;
+            auto c = j["campaign"];
+
+            if (c.contains("pid") && !c["pid"].is_null()) {
+                campaign.pid = c["pid"];
+            }
+
+            if (c.contains("log_file") && !c["log_file"].is_null()) {
+                campaign.log_file = c["log_file"];
+            }
+
+            campaign.running = c.value("running", false);
+            campaign.samples_generated = c.value("samples_generated", 0);
+            campaign.target_samples = c.value("target_samples", 0);
+            campaign.progress_percent = c.value("progress_percent", 0.0f);
+            campaign.current_domain = c.value("current_domain", "unknown");
+            campaign.samples_per_min = c.value("samples_per_min", 0.0f);
+            campaign.eta_hours = c.value("eta_hours", 0.0f);
+            campaign.quality_pass_rate = c.value("quality_pass_rate", 0.0f);
+            campaign.last_update = c.value("last_update", "");
+
+            health_.campaign = campaign;
+        } else {
+            health_.campaign = std::nullopt;
+        }
+
+        // Parse system health
+        health_.embedding_service_running = j.value("embedding_service_running", false);
+        health_.knowledge_bases_loaded = j.value("knowledge_bases_loaded", 0);
+        health_.cpu_percent = j.value("cpu_percent", 0.0f);
+        health_.memory_percent = j.value("memory_percent", 0.0f);
+        health_.disk_free_gb = j.value("disk_free_gb", 0.0f);
+
+        // Parse issues
+        health_.issues.clear();
+        if (j.contains("issues")) {
+            for (const auto& issue : j["issues"]) {
+                health_.issues.push_back(issue);
+            }
+        }
+
+        if (j.contains("last_checkpoint") && !j["last_checkpoint"].is_null()) {
+            health_.last_checkpoint = j["last_checkpoint"];
+        }
+
+        return true;
+    } catch (const json::exception& e) {
+        error_message_ = std::string("JSON parse error: ") + e.what();
+        return false;
+    }
+}
+
+void TrainingStatusWidget::RenderCampaignSection() {
+    ImGui::Text("Campaign Status");
+    ImGui::Spacing();
+
+    if (!health_.campaign.has_value()) {
+        ImGui::TextColored(ImVec4(0.5f, 0.5f, 1.0f, 1.0f), "🔵 No active campaign");
+        return;
+    }
+
+    const auto& c = health_.campaign.value();
+
+    // Status indicator
+    ImVec4 status_color = c.running ? ImVec4(0.0f, 1.0f, 0.0f, 1.0f) : ImVec4(1.0f, 0.0f, 0.0f, 1.0f);
+    const char* status_icon = c.running ? "🟢" : "🔴";
+    ImGui::TextColored(status_color, "%s %s", status_icon, c.running ? "Running" : "Stopped");
+
+    if (c.pid > 0) {
+        ImGui::Text("PID: %d", c.pid);
+    }
+
+    // Progress bar
+    ImGui::Text("Progress:");
+    ImGui::ProgressBar(c.progress_percent / 100.0f, ImVec2(-1, 0), "");
+    ImGui::SameLine();
+    ImGui::Text("%d / %d (%.1f%%)", c.samples_generated, c.target_samples, c.progress_percent);
+
+    // Metrics
+    ImGui::Text("Domain: %s", c.current_domain.c_str());
+    ImGui::Text("Generation Rate: %.1f samples/min", c.samples_per_min);
+    ImGui::Text("Quality Pass Rate: %.1f%%", c.quality_pass_rate * 100.0f);
+
+    if (c.eta_hours > 0) {
+        ImGui::Text("ETA: %s", FormatDuration(c.eta_hours).c_str());
+    }
+
+    if (!c.log_file.empty()) {
+        ImGui::Text("Log: %s", c.log_file.c_str());
+        ImGui::SameLine();
+        if (ImGui::SmallButton("Open")) {
+            std::string cmd = "open -a Terminal " + c.log_file;
+            system(cmd.c_str());
+        }
+    }
+}
+
+void TrainingStatusWidget::RenderSystemResourcesSection() {
+    ImGui::Text("System Resources");
+    ImGui::Spacing();
+
+    // CPU
+    const char* cpu_icon = GetStatusIcon(health_.cpu_percent, 70.0f, 90.0f);
+    ImVec4 cpu_color = GetStatusColor(health_.cpu_percent, 70.0f, 90.0f);
+    ImGui::TextColored(cpu_color, "%s CPU: %.1f%%", cpu_icon, health_.cpu_percent);
+
+    // Memory
+    const char* mem_icon = GetStatusIcon(health_.memory_percent, 70.0f, 90.0f);
+    ImVec4 mem_color = GetStatusColor(health_.memory_percent, 70.0f, 90.0f);
+    ImGui::TextColored(mem_color, "%s Memory: %.1f%%", mem_icon, health_.memory_percent);
+
+    // Disk (inverted thresholds - low disk is bad)
+    const char* disk_icon = health_.disk_free_gb > 50 ? "🟢" :
+                           health_.disk_free_gb > 10 ? "🟡" : "🔴";
+    ImVec4 disk_color = health_.disk_free_gb > 50 ? ImVec4(0.0f, 1.0f, 0.0f, 1.0f) :
+                       health_.disk_free_gb > 10 ? ImVec4(1.0f, 1.0f, 0.0f, 1.0f) :
+                                                   ImVec4(1.0f, 0.0f, 0.0f, 1.0f);
+    ImGui::TextColored(disk_color, "%s Disk Free: %.1f GB", disk_icon, health_.disk_free_gb);
+}
+
+void TrainingStatusWidget::RenderServicesSection() {
+    ImGui::Text("Services");
+    ImGui::Spacing();
+
+    // Embedding service
+    const char* emb_icon = health_.embedding_service_running ? "🟢" : "🔴";
+    ImVec4 emb_color = health_.embedding_service_running ?
+        ImVec4(0.0f, 1.0f, 0.0f, 1.0f) : ImVec4(1.0f, 0.0f, 0.0f, 1.0f);
+    ImGui::TextColored(emb_color, "%s Embedding Service: %s", emb_icon,
+                      health_.embedding_service_running ? "Running" : "Stopped");
+
+    ImGui::Text("Knowledge Bases: %d loaded", health_.knowledge_bases_loaded);
+}
+
+void TrainingStatusWidget::RenderIssuesSection() {
+    if (health_.issues.empty()) {
+        ImGui::TextColored(ImVec4(0.0f, 1.0f, 0.0f, 1.0f), "✅ No issues detected");
+        return;
+    }
+
+    ImGui::TextColored(ImVec4(1.0f, 0.3f, 0.3f, 1.0f), "⚠️ Issues (%zu)", health_.issues.size());
+    ImGui::Spacing();
+
+    for (const auto& issue : health_.issues) {
+        ImGui::BulletText("%s", issue.c_str());
+    }
+}
+
+ImVec4 TrainingStatusWidget::GetStatusColor(float value, float warn_threshold, float critical_threshold) {
+    if (value < warn_threshold) {
+        return ImVec4(0.0f, 1.0f, 0.0f, 1.0f); // Green
+    } else if (value < critical_threshold) {
+        return ImVec4(1.0f, 1.0f, 0.0f, 1.0f); // Yellow
+    } else {
+        return ImVec4(1.0f, 0.0f, 0.0f, 1.0f); // Red
+    }
+}
+
+const char* TrainingStatusWidget::GetStatusIcon(float value, float warn_threshold, float critical_threshold) {
+    if (value < warn_threshold) {
+        return "🟢";
+    } else if (value < critical_threshold) {
+        return "🟡";
+    } else {
+        return "🔴";
+    }
+}
+
+std::string TrainingStatusWidget::FormatDuration(float hours) {
+    int h = static_cast<int>(hours);
+    int m = static_cast<int>((hours - h) * 60);
+
+    std::ostringstream oss;
+    if (h > 0) {
+        oss << h << "h ";
+    }
+    oss << m << "m";
+    return oss.str();
+}
+
+std::string TrainingStatusWidget::FormatTimestamp(const std::string& iso_timestamp) {
+    if (iso_timestamp.empty()) {
+        return "Never";
+    }
+
+    // Parse ISO timestamp (simplified - just show time part)
+    size_t time_pos = iso_timestamp.find('T');
+    if (time_pos != std::string::npos && time_pos + 8 < iso_timestamp.size()) {
+        return iso_timestamp.substr(time_pos + 1, 8); // HH:MM:SS
+    }
+
+    return iso_timestamp;
+}
+
+} // namespace viz
+} // namespace afs

apps/studio/src/widgets/training_status.h

@@ -0,0 +1,93 @@
+/**
+ * @file training_status.h
+ * @brief Training campaign status monitoring widget for ImGui
+ *
+ * Displays real-time status of training data generation campaigns:
+ * - Campaign progress (samples generated, target, percentage)
+ * - Generation rate (samples/min, ETA)
+ * - Quality metrics (pass rate, domain breakdown)
+ * - System resources (CPU, memory, disk)
+ * - Issues and alerts
+ *
+ * Data source: Python health_check.py via JSON output
+ */
+
+#pragma once
+
+#include <string>
+#include <vector>
+#include <chrono>
+#include <optional>
+#include "imgui.h"
+
+namespace afs {
+namespace viz {
+
+struct CampaignStatus {
+    int pid = 0;
+    std::string log_file;
+    bool running = false;
+    int samples_generated = 0;
+    int target_samples = 0;
+    float progress_percent = 0.0f;
+    std::string current_domain;
+    float samples_per_min = 0.0f;
+    float eta_hours = 0.0f;
+    float quality_pass_rate = 0.0f;
+    std::string last_update;
+};
+
+struct SystemHealth {
+    std::optional<CampaignStatus> campaign;
+    bool embedding_service_running = false;
+    int knowledge_bases_loaded = 0;
+    float cpu_percent = 0.0f;
+    float memory_percent = 0.0f;
+    float disk_free_gb = 0.0f;
+    std::vector<std::string> issues;
+    std::string last_checkpoint;
+};
+
+class TrainingStatusWidget {
+public:
+    TrainingStatusWidget();
+    ~TrainingStatusWidget() = default;
+
+    // Render the training status widget
+    void Render(bool* p_open = nullptr);
+
+    // Update health data (call periodically)
+    void Update();
+
+    // Set update interval (default: 30 seconds)
+    void SetUpdateInterval(float seconds) { update_interval_ = seconds; }
+
+private:
+    // Fetch health data from Python health_check script
+    bool FetchHealthData();
+
+    // Parse JSON health data
+    bool ParseHealthJSON(const std::string& json);
+
+    // Render sections
+    void RenderCampaignSection();
+    void RenderSystemResourcesSection();
+    void RenderServicesSection();
+    void RenderIssuesSection();
+
+    // Helper functions
+    ImVec4 GetStatusColor(float value, float warn_threshold, float critical_threshold);
+    const char* GetStatusIcon(float value, float warn_threshold, float critical_threshold);
+    std::string FormatDuration(float hours);
+    std::string FormatTimestamp(const std::string& iso_timestamp);
+
+    // Data
+    SystemHealth health_;
+    std::chrono::steady_clock::time_point last_update_;
+    float update_interval_ = 30.0f; // seconds
+    bool auto_update_ = true;
+    std::string error_message_;
+};
+
+} // namespace viz
+} // namespace afs

docs/STATUS.md

@@ -1,7 +1,7 @@
 # STATUS
 
 Stage: Prototype
-Now: init/status/workspace commands; context init/list/mount/validate/discover/ensure-all; graph export; minimal config + plugin discovery.
+Now: init/status/workspace commands; context init/list/mount/validate/discover/ensure-all; graph export; minimal config + plugin discovery; studio sources in apps/studio.
 Not yet: service runtime; full configuration schema validation.
 Next: one small utility; smoke-test stub.
 Issues: no runtime yet.