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/squizlabs/php_codesniffer/tests/TestSuite.php

@@ -0,0 +1,35 @@
+<?php
+/**
+ * A PHP_CodeSniffer specific test suite for PHPUnit.
+ *
+ * @author    Greg Sherwood <gsherwood@squiz.net>
+ * @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
+ * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/licence.txt BSD Licence
+ */
+
+namespace PHP_CodeSniffer\Tests;
+
+use PHPUnit\Framework\TestResult;
+use PHPUnit\Framework\TestSuite as PHPUnit_TestSuite;
+
+class TestSuite extends PHPUnit_TestSuite
+{
+
+
+    /**
+     * Runs the tests and collects their result in a TestResult.
+     *
+     * @param \PHPUnit\Framework\TestResult $result A test result.
+     *
+     * @return \PHPUnit\Framework\TestResult
+     */
+    public function run(TestResult $result=null)
+    {
+        $result = parent::run($result);
+        printPHPCodeSnifferTestOutput();
+        return $result;
+
+    }//end run()
+
+
+}//end class