fix(gtm-architect): Stabilize Docker environment and fix frontend

- Refactor Docker build process for gtm-app to ensure reliability
- Correct volume mounts and build context in docker-compose.yml to prevent stale code
- Fix frontend 404 error by using relative paths in index.html
- Ensure API key is correctly mounted into the container
- Stabilize Node.js to Python data passing via explicit --data argument
- Update gtm_architect_documentation.md with extensive troubleshooting guide

docker-compose.yml

@@ -86,26 +86,24 @@ services:
       - market-backend
     # Port 80 is internal only
 
-  # --- GTM ARCHITECT ---
   gtm-app:
     build:
       context: .
       dockerfile: gtm-architect/Dockerfile
     container_name: gtm-architect
     restart: unless-stopped
+    ports:
+      - "3005:3005"
     volumes:
-      # Sideloading: Python Logic
+      # Sideloading for live development
       - ./gtm_architect_orchestrator.py:/app/gtm_architect_orchestrator.py
-      - ./market_db_manager.py:/app/market_db_manager.py
+      - ./gtm-architect/server.cjs:/app/server.cjs
       - ./helpers.py:/app/helpers.py
       - ./config.py:/app/config.py
-      # Sideloading: Server Logic
-      - ./gtm-architect/server.cjs:/app/server.cjs
       # Database Persistence
       - ./gtm_projects.db:/app/gtm_projects.db
-      # Keys
-      - ./gemini_api_key.txt:/app/gemini_api_key.txt
+      # Mount the API key to the location expected by config.py
+      - ./gemini_api_key.txt:/app/api_key.txt
     environment:
-      - PYTHONUNBUFFERED=1
-      - DB_PATH=/app/gtm_projects.db
-    # Port 3005 is internal only
+      - OPENAI_API_KEY=${OPENAI_API_KEY}
+      - SERPAPI_API_KEY=${SERPAPI_API_KEY}