refactor: Cleanup git state - commit all staged changes

Major refactoring cleanup:
- Add new controller architecture (class-controller-*.php)
- Add new settings-v2 UI (views/settings-v2/)
- Add new CSS architecture (agentic-sidebar.css, tokens)
- Add esbuild build pipeline (scripts/build.js, package.json)
- Add composer dependencies (vendor/)
- Add frontend src directory (assets/js/src/index.jsx)
- Add documentation files
- Remove old/obsolete files (class-settings.php, old CSS)

This commits all pending changes from previous refactoring efforts.

vendor/parsica-php/parsica/docs/index.md

@@ -0,0 +1,42 @@
+---
+title: Parsica
+sidebar_label: About Parsica
+---
+
+The easiest way to build robust parsers in PHP.
+
+**Note:** Parsica is very early stage, expect things to break. 
+
+* [Releases](releases)
+* [Installation & Requirements](installation)
+* [API Reference](api/index)
+
+## Donate
+
+Donate via my [GitHub Sponsor Page](https://github.com/sponsors/turanct).
+ 
+A lot of research & development went into this project. We think it can become the mainstream choice for building reliable parsers in PHP, and serve as a foundation for many advancements. Your support will help us to reach that goal.
+
+## Contribute
+
+* [Design Goals](contribute/design_goals)
+* Contribute by submitting code, documentation, examples, ... through pull requests.
+* [Code of Conduct](CODE_OF_CONDUCT)
+
+## Support
+
+### Commercial training & support
+
+E-mail us at [contact@value-object.com](mailto:contact@value-object.com) to discuss options.
+
+### Community support
+
+Submit questions as Github issues. Help us help you by submitting short bits of code that demonstrate the problem, and that can easily be copied and run. 
+
+## Links
+
+* Official Site: [parsica-php.github.io](https://parsica-php.github.io)
+* Twitter: [@parsica_php](https://twitter.com/parsica_php)
+* GitHub: [parsica-php/parsica](https://github.com/parsica-php/parsica)
+* Packagist: [parsica-php/parsica](https://packagist.org/packages/parsica-php/parsica)
+* License: [MIT](LICENSE)