feat(asset): implement asset path resolution and streamline file loading

- Introduced a new utility function `FindAsset` in `PlatformPaths` to locate asset files across multiple standard directories, enhancing flexibility in asset management.
- Updated various components to utilize `FindAsset` for loading configuration and prompt files, replacing hardcoded search paths with a more robust solution.
- Improved error handling and logging for asset loading failures, ensuring clearer feedback during runtime.
- Refactored existing code in `gemini_ai_service`, `prompt_builder`, and `platform_paths` to leverage the new asset resolution mechanism, promoting code consistency and maintainability.

src/cli/z3ed.cmake

@@ -89,9 +89,11 @@ add_executable(
   cli/service/testing/test_suite_writer.cc
 )
 
-# ============================================================================
+target_compile_definitions(z3ed PRIVATE YAZE_ASSETS_PATH="${CMAKE_SOURCE_DIR}/assets")
+
+# ============================================================================ 
 # AI Agent Support (Consolidated via Z3ED_AI flag)
-# ============================================================================
+# ============================================================================ 
 if(Z3ED_AI OR YAZE_WITH_JSON)
   target_compile_definitions(z3ed PRIVATE YAZE_WITH_JSON)
   message(STATUS "✓ z3ed AI agent enabled (Ollama + Gemini support)")
@@ -100,9 +102,9 @@ if(Z3ED_AI OR YAZE_WITH_JSON)
   target_link_libraries(z3ed PRIVATE nlohmann_json::nlohmann_json)
 endif()
 
-# ============================================================================
+# ============================================================================ 
 # SSL/HTTPS Support (Optional - Required for Gemini API)
-# ============================================================================
+# ============================================================================ 
 # SSL is only enabled when AI features are active
 # Ollama (localhost) works without SSL, Gemini (HTTPS) requires it
 if((Z3ED_AI OR YAZE_WITH_JSON) AND (YAZE_WITH_GRPC OR Z3ED_AI))
@@ -158,9 +160,9 @@ else()
   )
 endif()
 
-# ============================================================================
+# ============================================================================ 
 # Optional gRPC Support for CLI Agent Test Command
-# ============================================================================
+# ============================================================================ 
 if(YAZE_WITH_GRPC)
   message(STATUS "Adding gRPC support to z3ed CLI")
   
@@ -183,4 +185,4 @@ if(YAZE_WITH_GRPC)
     libprotobuf)
   
   message(STATUS "✓ gRPC CLI automation integrated")
-endif()
+endif()