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/symfony/property-access/Exception/AccessException.php

@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\PropertyAccess\Exception;
+
+/**
+ * Thrown when a property path is not available.
+ *
+ * @author Stéphane Escandell <stephane.escandell@gmail.com>
+ */
+class AccessException extends RuntimeException
+{
+}

vendor/symfony/property-access/Exception/ExceptionInterface.php

@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\PropertyAccess\Exception;
+
+/**
+ * Marker interface for the PropertyAccess component.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+interface ExceptionInterface extends \Throwable
+{
+}

vendor/symfony/property-access/Exception/InvalidArgumentException.php

@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\PropertyAccess\Exception;
+
+/**
+ * Base InvalidArgumentException for the PropertyAccess component.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class InvalidArgumentException extends \InvalidArgumentException implements ExceptionInterface
+{
+}

vendor/symfony/property-access/Exception/InvalidPropertyPathException.php

@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\PropertyAccess\Exception;
+
+/**
+ * Thrown when a property path is malformed.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class InvalidPropertyPathException extends RuntimeException
+{
+}

vendor/symfony/property-access/Exception/InvalidTypeException.php

@@ -0,0 +1,32 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\PropertyAccess\Exception;
+
+/**
+ * Thrown when a type of given value does not match an expected type.
+ *
+ * @author Farhad Safarov <farhad.safarov@gmail.com>
+ */
+class InvalidTypeException extends InvalidArgumentException
+{
+    public function __construct(
+        public readonly string $expectedType,
+        public readonly string $actualType,
+        public readonly string $propertyPath,
+        ?\Throwable $previous = null,
+    ) {
+        parent::__construct(
+            \sprintf('Expected argument of type "%s", "%s" given at property path "%s".', $expectedType, 'NULL' === $actualType ? 'null' : $actualType, $propertyPath),
+            previous: $previous,
+        );
+    }
+}

vendor/symfony/property-access/Exception/NoSuchIndexException.php

@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\PropertyAccess\Exception;
+
+/**
+ * Thrown when an index cannot be found.
+ *
+ * @author Stéphane Escandell <stephane.escandell@gmail.com>
+ */
+class NoSuchIndexException extends AccessException
+{
+}

vendor/symfony/property-access/Exception/NoSuchPropertyException.php

@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\PropertyAccess\Exception;
+
+/**
+ * Thrown when a property cannot be found.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class NoSuchPropertyException extends AccessException
+{
+}

vendor/symfony/property-access/Exception/OutOfBoundsException.php

@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\PropertyAccess\Exception;
+
+/**
+ * Base OutOfBoundsException for the PropertyAccess component.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class OutOfBoundsException extends \OutOfBoundsException implements ExceptionInterface
+{
+}

vendor/symfony/property-access/Exception/RuntimeException.php

@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\PropertyAccess\Exception;
+
+/**
+ * Base RuntimeException for the PropertyAccess component.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class RuntimeException extends \RuntimeException implements ExceptionInterface
+{
+}

vendor/symfony/property-access/Exception/UnexpectedTypeException.php

@@ -0,0 +1,39 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\PropertyAccess\Exception;
+
+use Symfony\Component\PropertyAccess\PropertyPathInterface;
+
+/**
+ * Thrown when a value does not match an expected type.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class UnexpectedTypeException extends RuntimeException
+{
+    /**
+     * @param mixed $value     The unexpected value found while traversing property path
+     * @param int   $pathIndex The property path index when the unexpected value was found
+     */
+    public function __construct(mixed $value, PropertyPathInterface $path, int $pathIndex)
+    {
+        $message = \sprintf(
+            'PropertyAccessor requires a graph of objects or arrays to operate on, '.
+            'but it found type "%s" while trying to traverse path "%s" at property "%s".',
+            \gettype($value),
+            (string) $path,
+            $path->getElement($pathIndex)
+        );
+
+        parent::__construct($message);
+    }
+}

vendor/symfony/property-access/Exception/UninitializedPropertyException.php

@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\PropertyAccess\Exception;
+
+/**
+ * Thrown when a property is not initialized.
+ *
+ * @author Jules Pietri <jules@heahprod.com>
+ */
+class UninitializedPropertyException extends AccessException
+{
+}