* fix: CSS loading logic for production and theme dev environments
- Updated the CSS loading logic to differentiate between production and theme environments.
* fix: streamline CSS loading logic for production and development environments
- Refactored the CSS loading logic to ensure proper handling of stylesheets in both production and development modes.
- Consolidated the CSS concatenation and minification process for production, while simplifying the development loading process.
* fix: simplify development CSS loading in head partial
- Updated the CSS loading logic in head.html to streamline the process for development environments by renaming the variable for clarity and ensuring proper handling of stylesheets.