feat(dashboard): route settings and access

apps/dashboard/src/app/router.tsx

@@ -1,11 +1,11 @@
 import { createBrowserRouter, type RouteObject } from 'react-router-dom';
 import { AppShell } from './app-shell.js';
 import { OverviewPage } from '../features/overview/overview-page.js';
-import { PlaceholderPage } from '../features/placeholder-page.js';
 import { ConversationRoute } from '../features/conversations/conversation-route.js';
 import { MediaPage } from '../features/media/media-page.js';
 import { OperationsPage } from '../features/operations/operations-page.js';
 import { PerformancePage } from '../features/performance/performance-page.js';
+import { SettingsRoute } from '../features/settings/settings-route.js';
 
 export function createDashboardRoutes(): RouteObject[] {
   return [
@@ -19,7 +19,7 @@ export function createDashboardRoutes(): RouteObject[] {
         { path: 'media', element: <MediaPage /> },
         { path: 'performance', element: <PerformancePage /> },
         { path: 'operations', element: <OperationsPage /> },
-        { path: 'settings', element: <PlaceholderPage title="Settings" description="Manage runtime behavior and Reddit access." /> },
+        { path: 'settings', element: <SettingsRoute /> },
       ],
     },
   ];

apps/dashboard/src/features/placeholder-page.tsx

@@ -1,15 +0,0 @@
-interface PlaceholderPageProps {
-  title: string;
-  description: string;
-}
-
-export function PlaceholderPage({ title, description }: PlaceholderPageProps) {
-  return (
-    <div className="page">
-      <header className="page-header">
-        <div><span className="eyebrow">Workspace</span><h1>{title}</h1><p>{description}</p></div>
-      </header>
-      <section className="panel empty-state"><strong>{title} workspace</strong><span>This route is ready for its feature module.</span></section>
-    </div>
-  );
-}