Refactor code for improved readability and consistency

- Cleaned up whitespace and formatting in various files including http.py, language.py, logger.py, safe_exec.py, and SQL migration scripts.
- Consolidated import statements and removed unnecessary blank lines.
- Updated logging configuration for better clarity.
- Enhanced the safe execution code with improved error handling and logging.
- Removed commented-out code and unnecessary variables in backfill_zero_trades.py and other scripts.
- Added a pyproject.toml for Ruff and Vulture configuration.
- Introduced requirements-dev.txt for development dependencies.
- Removed commented-out stock entries in init.sql for cleaner migration scripts.

backend_api_python/scripts/run_reflection_task.py

@@ -1,18 +1,20 @@
-import sys
 import os
+import sys
+
 from dotenv import load_dotenv
 
 # Add the backend directory to the Python path so app.* can be imported
 # The app package lives under backend_api_python/app while this script is under backend_api_python/scripts
-sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
 
 from app.services.reflection import ReflectionService
 
+
 def main():
     # Load backend envs for DATABASE_URL, reflection switches, etc.
     # This script may be run locally, so we must load .env explicitly.
-    backend_env_path = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '.env'))
-    root_env_path = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..', '.env'))
+    backend_env_path = os.path.abspath(os.path.join(os.path.dirname(__file__), "..", ".env"))
+    root_env_path = os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "..", ".env"))
     if os.path.exists(root_env_path):
         load_dotenv(root_env_path, override=False)
     if os.path.exists(backend_env_path):
@@ -28,6 +30,6 @@ def main():
     print("Reflection stats:", stats)
     print("Task Completed.")
 
+
 if __name__ == "__main__":
     main()
-