feat: Enhance PerformanceProfiler to handle shutdown state and prevent crashes during destruction

docs/E6-z3ed-implementation-plan.md

@@ -14,7 +14,7 @@ This plan decomposes the design additions (Sections 11–15 of `E6-z3ed-cli-desi
 | Verification Pipeline | Build layered testing + CI coverage. | Phase 6+ | Integrates with harness + CLI suites. |
 | Telemetry & Learning | Capture signals to improve prompts + heuristics. | Phase 8 | Optional/opt-in features. |
 
-### Progress snapshot — 2025-10-01 final update (Phase 6 + AW-03 Complete)
+### Progress snapshot — 2025-10-01 final update (Phase 6 + AW-03 Complete + Graphics Fix)
 
 - ✅ CLI global flag passthrough now preserves subcommand options, letting `agent describe` and palette routines accept both space-separated and `--flag=value` styles alongside the updated help text.
 - ✅ `agent describe --format yaml` writes catalog data end-to-end; JSON format also working correctly.
@@ -32,6 +32,7 @@ This plan decomposes the design additions (Sections 11–15 of `E6-z3ed-cli-desi
 - ✅ **Regenerated API documentation** (`docs/api/z3ed-resources.yaml`) with all new agent commands.
 - ✅ **Implemented ProposalDrawer ImGui component** with proposal list, detail view, and accept/reject/delete actions (AW-03).
 - ✅ **Fixed linker errors** by adding CLI service sources to app/emu/lib build targets in CMake configuration.
+- ✅ **Fixed RAII shutdown crash** in `PerformanceProfiler` - added shutdown flag and validity checks to prevent segfault during static destruction (see `docs/gfx-raii-shutdown-fix.md`).
 
 ## 2. Task Backlog
 
@@ -67,9 +68,12 @@ _Status Legend: Prototype · In Progress · Planned · Blocked · Done_
 5. ✅ **COMPLETED**: Added `agent list` command to enumerate all proposals with status filtering.
 6. ✅ **COMPLETED**: Added `--proposal-id` flag to `agent diff` for viewing specific proposals.
 7. ✅ **COMPLETED**: Updated resource catalog with agent list and diff actions including arguments and return schemas.
-8. **PLANNED**: Add ImGui drawer for proposals with accept/reject controls (AW-03).
-9. **PLANNED**: Spike IPC options for `ImGuiTestHarness` (socket vs. HTTP vs. shared memory) and document findings (IT-01).
-10. **PLANNED**: Integrate schema export with TUI command palette + help overlays (RC-04).
+8. ✅ **COMPLETED**: Implemented ProposalDrawer ImGui component with proposal list, detail view, and accept/reject/delete actions (AW-03).
+9. ✅ **COMPLETED**: Fixed RAII shutdown crash in `PerformanceProfiler` for clean application exit.
+10. **IN PROGRESS**: Test ProposalDrawer in running application with live proposals.
+11. **PLANNED**: Complete ROM merging in AcceptProposal method (AW-03 TODO).
+12. **PLANNED**: Spike IPC options for `ImGuiTestHarness` (socket vs. HTTP vs. shared memory) and document findings (IT-01).
+13. **PLANNED**: Integrate schema export with TUI command palette + help overlays (RC-04).
 
 ## 4. Open Questions
 

src/app/gfx/performance_profiler.cc

@@ -16,28 +16,36 @@ PerformanceProfiler& PerformanceProfiler::Get() {
   return instance;
 }
 
-PerformanceProfiler::PerformanceProfiler() : enabled_(true) {
+PerformanceProfiler::PerformanceProfiler() : enabled_(true), is_shutting_down_(false) {
   // Initialize with memory pool for efficient data storage
   // Reserve space for common operations to avoid reallocations
   active_timers_.reserve(50);
   operation_times_.reserve(100);
   operation_totals_.reserve(100);
   operation_counts_.reserve(100);
+  
+  // Register destructor to set shutdown flag
+  std::atexit([]() {
+    Get().is_shutting_down_ = true;
+  });
 }
 
 void PerformanceProfiler::StartTimer(const std::string& operation_name) {
-  if (!enabled_) return;
+  if (!enabled_ || is_shutting_down_) return;
   
   active_timers_[operation_name] = std::chrono::high_resolution_clock::now();
 }
 
 void PerformanceProfiler::EndTimer(const std::string& operation_name) {
-  if (!enabled_) return;
+  if (!enabled_ || is_shutting_down_) return;
   
   auto timer_iter = active_timers_.find(operation_name);
   if (timer_iter == active_timers_.end()) {
-    SDL_Log("Warning: EndTimer called for operation '%s' that was not started", 
-            operation_name.c_str());
+    // During shutdown, silently ignore missing timers to avoid log spam
+    if (!is_shutting_down_) {
+      SDL_Log("Warning: EndTimer called for operation '%s' that was not started", 
+              operation_name.c_str());
+    }
     return;
   }
   
@@ -264,13 +272,15 @@ double PerformanceProfiler::CalculateMedian(std::vector<double> values) {
 // ScopedTimer implementation
 ScopedTimer::ScopedTimer(const std::string& operation_name) 
     : operation_name_(operation_name) {
-  if (PerformanceProfiler::IsEnabled()) {
+  if (PerformanceProfiler::IsEnabled() && PerformanceProfiler::IsValid()) {
     PerformanceProfiler::Get().StartTimer(operation_name_);
   }
 }
 
 ScopedTimer::~ScopedTimer() {
-  if (PerformanceProfiler::IsEnabled()) {
+  // Check if profiler is still valid (not shutting down) to prevent
+  // crashes during static destruction order issues
+  if (PerformanceProfiler::IsEnabled() && PerformanceProfiler::IsValid()) {
     PerformanceProfiler::Get().EndTimer(operation_name_);
   }
 }

src/app/gfx/performance_profiler.h

@@ -62,6 +62,14 @@ class PerformanceProfiler {
     return Get().enabled_;
   }
   
+  /**
+   * @brief Check if the profiler is in a valid state (not shutting down)
+   * This prevents crashes during static destruction order issues
+   */
+  static bool IsValid() {
+    return !Get().is_shutting_down_;
+  }
+  
   /**
    * @brief Start timing an operation
    * @param operation_name Name of the operation to time
@@ -161,6 +169,7 @@ class PerformanceProfiler {
   std::unordered_map<std::string, int> operation_counts_;   // Count per operation
   
   bool enabled_ = true; // Performance monitoring enabled by default
+  bool is_shutting_down_ = false; // Flag to prevent operations during destruction
   
   /**
    * @brief Calculate median value from a sorted vector

src/app/gui/canvas/canvas_performance_integration.cc

@@ -36,21 +36,22 @@ void CanvasPerformanceIntegration::StartMonitoring() {
 }
 
 void CanvasPerformanceIntegration::StopMonitoring() {
-  if (frame_timer_active_) {
-    frame_timer_.reset();
-    frame_timer_active_ = false;
-  }
-  if (draw_timer_active_) {
-    draw_timer_.reset();
-    draw_timer_active_ = false;
+  // Release timers in reverse order of creation to ensure clean shutdown
+  if (modal_timer_active_) {
+    modal_timer_.reset();
+    modal_timer_active_ = false;
   }
   if (interaction_timer_active_) {
     interaction_timer_.reset();
     interaction_timer_active_ = false;
   }
-  if (modal_timer_active_) {
-    modal_timer_.reset();
-    modal_timer_active_ = false;
+  if (draw_timer_active_) {
+    draw_timer_.reset();
+    draw_timer_active_ = false;
+  }
+  if (frame_timer_active_) {
+    frame_timer_.reset();
+    frame_timer_active_ = false;
   }
   
   util::logf("Stopped performance monitoring for canvas: %s", canvas_id_.c_str());