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/graphviz/phpcs.xml.dist

@@ -0,0 +1,22 @@
+<?xml version="1.0"?>
+<ruleset name="phpDocumentor">
+ <description>The coding standard for phpDocumentor.</description>
+
+    <file>src</file>
+    <file>tests</file>
+    <arg value="p"/>
+    <rule ref="PSR2" />
+    <rule ref="Doctrine">
+        <exclude name="SlevomatCodingStandard.TypeHints.UselessConstantTypeHint.UselessDocComment" />
+    </rule>
+
+    <rule ref="PSR1.Methods.CamelCapsMethodName.NotCamelCaps">
+        <exclude-pattern>tests/phpDocumentor/GraphViz/Test/GraphTest\.php</exclude-pattern>
+    </rule>
+
+    <rule ref="Generic.Formatting.SpaceAfterNot">
+        <properties>
+            <property name="spacing" value="0" />
+        </properties>
+    </rule>
+</ruleset>