Run ruff format changes and finalize indentation and lint fixes.

docs/DEVELOPMENT.md

@@ -33,7 +33,7 @@ make shell
 source .venv/bin/activate
 
 # Using uv run (recommended)
-uv run python src/main.py
+uv run python -m thechart
 ```
 
 ## Testing Framework
@@ -266,7 +266,7 @@ Application logs are stored in `logs/` directory:
 - **`app.warning.log`**: Warning messages only
 
 ### Debug Mode
-Enable debug logging by modifying `src/logger.py` configuration.
+Enable debug logging via environment or edit `thechart.core.constants` and use `thechart.core.logger`.
 
 ### Common Issues