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/phpunit.xml.dist

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<phpunit
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/8.0/phpunit.xsd"
+    bootstrap="vendor/autoload.php"
+    colors="true"
+    verbose="true"
+    forceCoversAnnotation="true"
+    beStrictAboutCoversAnnotation="true"
+    beStrictAboutTodoAnnotatedTests="true"
+    beStrictAboutTestsThatDoNotTestAnything="true"
+    beStrictAboutOutputDuringTests="true"
+    beStrictAboutChangesToGlobalState="true"
+>
+    <testsuites>
+        <testsuite name="unit">
+            <directory>./tests/unit/</directory>
+        </testsuite>
+        <testsuite name="integration">
+            <directory>./tests/integration/</directory>
+        </testsuite>
+    </testsuites>
+    <filter>
+        <whitelist>
+            <directory suffix=".php">src</directory>
+        </whitelist>
+    </filter>
+    <logging>
+        <log type="coverage-html"
+            target="build/coverage"
+            lowUpperBound="35"
+            highLowerBound="70" />
+        <log type="coverage-clover" target="build/logs/clover.xml"/>
+        <log type="junit" target="build/logs/junit.xml" />
+    </logging>
+    <listeners>
+        <listener class="Mockery\Adapter\Phpunit\TestListener"
+            file="vendor/mockery/mockery/library/Mockery/Adapter/Phpunit/TestListener.php"></listener>
+    </listeners>
+</phpunit>