Added conditional comment handling for database settings in production template, introduced DATABASE_URL generation in env_sample, and corrected readme structure rendering.
New Features
- Added conditional comment handling for `use_database_url` and `database_type` in production settings.
- Added `DATABASE_URL` template logic for MySQL and PostgreSQL in env_sample.
- Updated `readme.md` template to properly render unified_structure sections.
Enhancements
- Ensured comment syntax consistency across all template files.
- Streamlined placeholder usage for clearer project scaffolding.
Bug Fixes
- Removed stray formatting characters from comment markers.