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/league/config/CHANGELOG.md

@@ -0,0 +1,42 @@
+# Change Log
+All notable changes to this project will be documented in this file.
+Updates should follow the [Keep a CHANGELOG](https://keepachangelog.com/) principles.
+
+## [Unreleased][unreleased]
+
+## [1.2.0] - 2022-12-11
+
+### Changed
+
+- Values can now be set prior to the corresponding schema being registered.
+- `exists()` and `get()` now only trigger validation for the relevant schema, not the entire config at once.
+
+## [1.1.1] - 2021-08-14
+
+### Changed
+
+ - Bumped the minimum version of dflydev/dot-access-data for PHP 8.1 support
+
+## [1.1.0] - 2021-06-19
+
+### Changed
+
+- Bumped the minimum PHP version to 7.4+
+- Bumped the minimum version of nette/schema to 1.2.0
+
+## [1.0.1] - 2021-05-31
+
+### Fixed
+
+- Fixed the `ConfigurationExceptionInterface` marker interface not extending `Throwable` (#2)
+
+## [1.0.0] - 2021-05-31
+
+Initial release! 🎉
+
+[unreleased]: https://github.com/thephpleague/config/compare/v1.2.0...main
+[1.2.0]: https://github.com/thephpleague/config/compare/v1.1.1...v.1.2.0
+[1.1.1]: https://github.com/thephpleague/config/compare/v1.1.0...v1.1.1
+[1.1.0]: https://github.com/thephpleague/config/compare/v1.0.1...v1.1.0
+[1.0.1]: https://github.com/thephpleague/config/compare/v1.0.0...v1.0.1
+[1.0.0]: https://github.com/thephpleague/config/releases/tag/v1.0.0