feat(app): Add wiki re-evaluation and fix wolfra bug

- Implemented a "Re-evaluate Wikipedia" button in the UI.

- Added a backend endpoint to trigger targeted Wikipedia metric extraction.

- Hardened the LLM metric extraction prompt to prevent hallucinations.

- Corrected several database path errors that caused data loss.

- Updated application version to 0.6.4 and documented the ongoing issue.

company-explorer/backend/config.py

@@ -10,10 +10,10 @@ try:
     class Settings(BaseSettings):
         # App Info
         APP_NAME: str = "Company Explorer"
-        VERSION: str = "0.7.0"
+        VERSION: str = "0.6.4"
         DEBUG: bool = True
         
-        # Database (Store in App dir for simplicity)
+        # Database (FINAL CORRECT PATH for Docker Container)
         DATABASE_URL: str = "sqlite:////app/companies_v3_fixed_2.db"
         
         # API Keys
@@ -32,20 +32,25 @@ try:
 
 except ImportError:
     # Fallback wenn pydantic-settings nicht installiert ist
-    class Settings:
+    class FallbackSettings:
         APP_NAME = "Company Explorer"
-        VERSION = "0.2.1"
+        VERSION = "0.6.4"
         DEBUG = True
-        DATABASE_URL = "sqlite:////app/logs_debug/companies_debug.db"
+        DATABASE_URL = "sqlite:////app/companies_v3_fixed_2.db" # FINAL CORRECT PATH
         GEMINI_API_KEY = os.getenv("GEMINI_API_KEY")
         OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
         SERP_API_KEY = os.getenv("SERP_API_KEY")
         LOG_DIR = "/app/logs_debug"
     
-    settings = Settings()
+    settings = FallbackSettings()
 
 # Ensure Log Dir
-os.makedirs(settings.LOG_DIR, exist_ok=True)
+try:
+    os.makedirs(settings.LOG_DIR, exist_ok=True)
+except FileExistsError:
+    pass
+except Exception as e:
+    logging.warning(f"Could not create log directory {settings.LOG_DIR}: {e}")
 
 # API Key Loading Helper (from file if env missing)
 def load_api_key_from_file(filename: str) -> Optional[str]:
@@ -54,10 +59,10 @@ def load_api_key_from_file(filename: str) -> Optional[str]:
             with open(filename, 'r') as f:
                 return f.read().strip()
     except Exception as e:
-        print(f"Could not load key from {filename}: {e}") # Print because logging might not be ready
+        logging.warning(f"Could not load key from {filename}: {e}")
     return None
 
-# Auto-load keys if not in env
+# Auto-load keys assuming the app runs in the Docker container's /app context
 if not settings.GEMINI_API_KEY:
     settings.GEMINI_API_KEY = load_api_key_from_file("/app/gemini_api_key.txt")