fix: resolve RedisCache array offset error and improve discovery diagnostics

- Fix RedisCache driver to handle MGET failures gracefully with fallback
- Add comprehensive discovery context comparison debug tools
- Identify root cause: WEB context discovery missing 166 items vs CLI
- WEB context missing RequestFactory class entirely (52 vs 69 commands)
- Improved exception handling with detailed binding diagnostics

src/Framework/Router/Exception/RouteNotFound.php

@@ -20,6 +20,9 @@ class RouteNotFound extends FrameworkException implements HttpException
 
     protected string $route;
 
+    /**
+     * @param array<string, mixed> $context
+     */
     public function __construct(string $route, ?Throwable $previous = null, int $code = 0, array $context = [])
     {
         $this->route = $route;

src/Framework/Router/Result/HtmlResult.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Framework\Router\Result;
+
+use App\Framework\Http\Status;
+use App\Framework\Router\ActionResult;
+
+/**
+ * HTML Result for raw HTML content
+ *
+ * Used when a controller needs to return raw HTML content
+ * instead of using a template engine.
+ */
+final readonly class HtmlResult implements ActionResult
+{
+    public function __construct(
+        public string $content,
+        public Status $status = Status::OK,
+    ) {
+    }
+}