Finalize RC release notes link and rector-typed terminal closure

CHANGELOG.md

@@ -1,5 +1,7 @@
 ## [3.0.0] - TBD
 
+Upgrade guide: https://github.com/softberg/quantum-php-docs/blob/master/v3.0/upgrade-guide.md
+
 ### Changed
 - **BREAKING:** Refactored app bootstrapping and DI ownership model (#373):
   - Introduced `AppContext` as the central execution state holder (mode, baseDir, DiContainer, Environment, Config, Request, Response, Routes)
@@ -53,7 +55,6 @@
   - Routing is executed once per request; matched route is stored on the `Request`
   - Global route helper functions (`current_*`, `route_*`) now rely on `MatchedRoute` instead of legacy static route state
   - Middleware ordering is strictly prepend-based (later middleware wraps earlier)
-  - Nested route groups are no longer supported
   - Route name uniqueness is now enforced at build time
 
 - **BREAKING:** Controller resolution behavior changed:

src/App/Adapters/WebAppAdapter.php

@@ -18,7 +18,6 @@
 
 use Quantum\Middleware\Exceptions\MiddlewareException;
 use Quantum\Loader\Exceptions\LoaderException;
-use Quantum\Module\Exceptions\ModuleException;
 use Quantum\Config\Exceptions\ConfigException;
 use Quantum\App\Stages\SetupErrorHandlerStage;
 use Quantum\Router\Exceptions\RouteException;
@@ -39,6 +38,8 @@
 use Quantum\App\Enums\ExitCode;
 use Quantum\App\BootPipeline;
 use Quantum\App\AppContext;
+use Quantum\Http\Response;
+use Quantum\Http\Request;
 use ReflectionException;
 
 /**
@@ -68,7 +69,7 @@ public function __construct(AppContext $context)
 
     /**
      * Starts the web app
-     * @throws ModuleException|MiddlewareException|LangException|RouteException|CsrfException|ConfigException|DiException|BaseException|LoaderException|ReflectionException
+     * @throws MiddlewareException|LangException|RouteException|CsrfException|ConfigException|DiException|BaseException|LoaderException|ReflectionException
      */
     public function start(): ?int
     {
@@ -91,7 +92,7 @@ public function start(): ?int
 
         $viewCache = $this->setupViewCache();
 
-        $terminal = fn ($request) => $viewCache->getCachedResponse($request->getUri() ?? '')
+        $terminal = fn (Request $request): Response => $viewCache->getCachedResponse($request->getUri() ?? '')
             ?? (new RouteDispatcher())->dispatch($matchedRoute, $request);
 
         $response = (new MiddlewareManager($matchedRoute))->applyMiddlewares(request(), $terminal);