fix(debug): Add version info and API key debugging

- Adds a version and timestamp to the orchestrator's startup logs to verify code deployment.
- Introduces extensive debug logging in config.py and helpers.py to trace the API key loading process, including exact file paths and environment variable checks. This will help diagnose the persistent 'API Key missing' error.

config.py

@@ -490,6 +490,7 @@ class Config:
         """Laedt API-Schluessel aus den definierten Dateien."""
         logger = logging.getLogger(__name__)
         logger.info("Lade API-Schluessel...")
+        print(f"DEBUG: Attempting to load API keys. BASE_DIR: {BASE_DIR}") # Debug print
         cls.API_KEYS['openai'] = cls._load_key_from_file(API_KEY_FILE)
         cls.API_KEYS['serpapi'] = cls._load_key_from_file(SERP_API_KEY_FILE)
         cls.API_KEYS['genderize'] = cls._load_key_from_file(GENDERIZE_API_KEY_FILE)