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/assembleTest.php

@@ -0,0 +1,93 @@
+<?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;
+
+use PHPUnit\Framework\TestCase;
+use Parsica\Parsica\PHPUnit\ParserAssertions;
+use function Parsica\Parsica\assemble;
+use function Parsica\Parsica\char;
+use function Parsica\Parsica\string;
+
+final class assembleTest extends TestCase
+{
+    use ParserAssertions;
+
+    /** @test */
+    public function assemble_string()
+    {
+        $parser = assemble(
+            string('first'),
+            string('second'),
+        );
+        $this->assertParses("firstsecond", $parser, "firstsecond");
+        $this->assertRemainder("firstsecond", $parser, "");
+    }
+
+    /** @test */
+    public function assemble_string_ignore()
+    {
+        $parser = assemble(
+            string('first')->thenIgnore(char('-')),
+            string('second'),
+        );
+        $this->assertParses("first-second", $parser, "firstsecond");
+        $this->assertRemainder("first-second", $parser, "");
+    }
+
+    /** @test */
+    public function assemble_arrays()
+    {
+        $toArray = fn($v) => [$v];
+
+        $parser = assemble(
+            string('first')->map($toArray),
+            string('second')->map($toArray),
+        );
+
+        $input = "firstsecond";
+        $expected = ["first", "second"];
+        $this->assertParses($input, $parser, $expected);
+    }
+
+    /** @test */
+    public function assemble_different_types_but_the_others_are_ignored()
+    {
+        // @todo this could be more elegant
+        $toArray = fn($v) => [$v];
+        $parser = assemble(
+            char('[')->sequence(
+                string('first')->map($toArray)
+            ),
+            char(',')->sequence(
+                string('second')->map($toArray)
+            )->thenIgnore(char(']')),
+        );
+
+        $input = "[first,second]";
+        $expected = ["first", "second"];
+
+        $this->assertParses($input, $parser, $expected);
+    }
+
+    /** @test */
+    public function label()
+    {
+        $parser = assemble(
+            string('first'),
+            string('second'),
+        );
+        $this->assertParseFails("X", $parser, "'first'");
+        $this->assertParseFails("firsX", $parser, "'first'");
+        $this->assertParseFails("firstX", $parser, "'second'");
+
+    }
+
+}