COMPREHENSIVE TRACE LOGGING ADDITIONS - GAMEENGINE SERVICE FILES
================================================================

Date: February 8, 2026
Task: Add trace logging to 15 service implementation files without logger_->Trace

SUMMARY:
--------
- 18 files modified total (15 service files + 1 header + 2 call site updates)
- 100% coverage of target directories (platform, render, input, diagnostics, soundboard)
- All trace calls follow consistent pattern: logger_->Trace("ClassName", "MethodName", "Entry")
- logger_service.cpp intentionally excluded (would cause recursion)

MODIFIED FILES BY DIRECTORY:
----------------------------

Platform Service (7 files):
  ✓ gameengine/src/services/impl/platform/platform_service_log_cpu.cpp
  ✓ gameengine/src/services/impl/platform/platform_service_log_display.cpp
  ✓ gameengine/src/services/impl/platform/platform_service_log_env.cpp
  ✓ gameengine/src/services/impl/platform/sdl_window_service_events_input.cpp
  ✓ gameengine/src/services/impl/platform/sdl_window_service_events_window.cpp
  ✓ gameengine/src/services/impl/platform/sdl_window_service_mouse_config.cpp
  ✓ gameengine/src/services/impl/platform/sdl_window_service_utilities.cpp

Render Coordinator (4 files):
  ✓ gameengine/src/services/impl/render/render_coordinator_render_entry.cpp
  ✓ gameengine/src/services/impl/render/render_coordinator_render_finalize.cpp
  ✓ gameengine/src/services/impl/render/render_coordinator_render_scene.cpp
  ✓ gameengine/src/services/impl/render/render_coordinator_service.hpp (friend declarations)

Input Service (2 files):
  ✓ gameengine/src/services/impl/input/sdl_input_service_gamepad_snapshot.cpp
  ✓ gameengine/src/services/impl/input/sdl_input_service_gamepad.cpp

Diagnostics Service (1 file):
  ✓ gameengine/src/services/impl/diagnostics/validation_tour_service_capture.cpp
  ✗ gameengine/src/services/impl/diagnostics/logger_service.cpp (excluded - recursion)

Soundboard Service (2 files):
  ✓ gameengine/src/services/impl/soundboard/soundboard_path_resolver.hpp
  ✓ gameengine/src/services/impl/soundboard/soundboard_path_resolver.cpp

Workflow Call Sites (2 files):
  ✓ gameengine/src/services/impl/workflow/workflow_soundboard_catalog_scan_step.cpp
  ✓ gameengine/src/services/impl/workflow/workflow_soundboard_gui_helpers.cpp

TECHNICAL DETAILS:
------------------

1. Platform Service Files:
   - Added trace entry calls to helper functions
   - GatherCpuInfo, GatherDisplayAndEmitTable, GatherEnvironmentAndDrivers
   - PublishInputEvents, PublishWindowEvents, ConfigureMouseGrabBindings
   - BuildSdlErrorMessage, ThrowSdlErrorIfFailed, ShowErrorDialog

2. Render Coordinator Files:
   - Added trace to public entry points and helper functions
   - RenderFrame, RenderFrameWithViewState, RenderFrameWithOverrides
   - FinalizeRenderFrame, RenderSceneContent
   - Added friend declarations for helper functions to access private logger_

3. Input Service Files:
   - Added trace to gamepad-related methods
   - UpdateGamepadSnapshot, ApplyKeyMapping, IsActionKeyPressed
   - ShouldCaptureMouseDelta, EnsureGamepadSubsystem
   - TryOpenGamepad, CloseGamepad

4. Diagnostics Service Files:
   - Added trace to validation tour capture methods
   - ToArray, BuildViewState, AnalyzeCapture
   - logger_service.cpp intentionally excluded (comments explain recursion issue)

5. Soundboard Service Files:
   - Updated function signatures to accept logger parameter
   - ResolveSoundboardPackageRoot now takes optional logger (default nullptr)
   - FindPackageRoot updated with logger parameter
   - Both call sites updated to pass logger_

ARCHITECTURAL IMPROVEMENTS:
---------------------------

1. Friend Declarations:
   - Added to RenderCoordinatorService to allow helper functions access to private members
   - Maintains encapsulation while enabling comprehensive logging

2. Optional Logger Parameters:
   - Soundboard path resolver functions now accept optional logger
   - Backward compatible (defaults to nullptr)
   - Enables trace logging without breaking existing code

3. Consistent Pattern:
   - All trace calls follow: logger_->Trace("ClassName", "MethodName", "Entry")
   - Free functions use: if (logger) { logger->Trace(...); }
   - Class methods use: logger_->Trace(...)

VERIFICATION:
-------------
Command to verify all files have trace logging:
  cd gameengine/src/services/impl && \
  for dir in platform render input diagnostics soundboard; do \
    for file in $dir/*.cpp; do \
      if [ -f "$file" ] && ! grep -q "logger_->Trace\|logger->Trace" "$file" && \
         ! grep -q "Cannot add trace logging" "$file"; then \
        echo "Missing: $file"; \
      fi; \
    done; \
  done

Result: No missing files (100% coverage achieved)

NEXT STEPS:
-----------
- Build and test to ensure compilation succeeds
- Run game engine tests to verify trace logging doesn't introduce runtime issues
- Consider adding similar trace logging to other service directories if needed