apps: add studio sources

apps/studio/README.md

@@ -0,0 +1,33 @@
+# 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