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/phpdocumentor/flyfinder/composer.json

@@ -0,0 +1,34 @@
+{
+  "name": "phpdocumentor/flyfinder",
+  "description": "Flysystem plugin to add file finding capabilities to the Filesystem entity",
+  "keywords": ["flysystem", "phpdoc"],
+  "homepage": "http://www.phpdoc.org",
+  "license": "MIT",
+  "autoload": {
+    "psr-4": {
+      "Flyfinder\\": ["src/"]
+    }
+  },
+  "autoload-dev": {
+    "psr-4": {
+      "Flyfinder\\": [
+        "tests/integration/",
+        "tests/unit/"
+      ]
+    }
+  },
+  "require": {
+    "php":              "^7.2||^8.0",
+    "league/flysystem": "^1.0"
+  },
+  "minimum-stability":  "stable",
+  "require-dev": {
+    "mockery/mockery":  "^1.3",
+    "league/flysystem-memory": "~1"
+  },
+  "extra": {
+    "branch-alias": {
+      "dev-master": "1.x-dev"
+    }
+  }
+}