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/parsica-php/parsica/tests/Examples/SimpleDateTest.php

@@ -0,0 +1,47 @@
+<?php declare(strict_types=1);
+/**
+ * This file is part of the Parsica library.
+ *
+ * Copyright (c) 2020 Mathias Verraes <mathias@verraes.net>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Tests\Parsica\Parsica\Examples;
+
+use Parsica\Parsica\PHPUnit\ParserAssertions;
+use PHPUnit\Framework\TestCase;
+use function Parsica\Parsica\any;
+use function Parsica\Parsica\collect;
+use function Parsica\Parsica\digitChar;
+use function Parsica\Parsica\repeat;
+use function Parsica\Parsica\skipSpace;
+use function Parsica\Parsica\string;
+
+final class SimpleDateTest extends TestCase
+{
+    use ParserAssertions;
+
+    /** @test */
+    public function simple_date()
+    {
+        $jan = (string("January")->or(string("Jan")))->map(fn($v) => 1);
+        $feb = (string("February")->or(string("Feb")))->map(fn($v) => 2);
+        $mar = (string("March")->or(string("Mar")))->map(fn($v) => 3);
+        // ... you get the gist
+
+        $month = any($jan, $feb, $mar);
+        $day = repeat(2, digitChar())->map('intval');
+        $p1 = collect(
+            $month->thenIgnore(skipSpace()),
+            $day
+        );
+
+        $this->assertParses("January 28", $p1, [1, 28]);
+        $this->assertParses("Jan 28", $p1, [1, 28]);
+        $this->assertParses("February 28", $p1, [2, 28]);
+        $this->assertParses("Feb 28", $p1, [2, 28]);
+    }
+
+}