fix(config): Ensure API keys are loaded by orchestrator

- Reverts docker-compose.yml to use volume mount for gemini_api_key.txt, due to format constraints.
- Restores and refines Config.load_api_keys() in config.py.
- **Crucially, calls Config.load_api_keys() at the start of gtm_architect_orchestrator.py to ensure keys are loaded.**
- Adjusts _get_gemini_api_key in helpers.py to prioritize keys from Config.API_KEYS.
- This definitively addresses the 'API Key missing' error by guaranteeing key initialization.

docker-compose.yml

@@ -101,8 +101,9 @@ services:
       - ./gtm_db_manager.py:/app/gtm_db_manager.py
       - ./gtm_projects.db:/app/gtm_projects.db
       - ./Log_from_docker:/app/Log_from_docker
-      environment:
+      # Mount API keys
+      - ./gemini_api_key.txt:/app/gemini_api_key.txt
+      - ./serpapikey.txt:/app/serpapikey.txt
+    environment:
       - PYTHONUNBUFFERED=1
-      - DB_PATH=/app/gtm_projects.db
-    env_file:
-      - ./gemini_api_key.txt
+      - DB_PATH=/app/gtm_projects.db