Direct-to-bucket video upload + transcode pipeline

- server/videoUpload.ts: S3 multipart presign helpers, bucket inventory listing
- routes: /api/admin/uploads/{init,part-url,complete,abort}, /api/admin/inventory,
  /api/internal/transcode-done (worker callback, bearer INTERNAL_TOKEN)
- admin UI: browser-to-bucket uploader with progress, bucket-vs-database panel

Originals land in folx-tv/_incoming/{guid}/, the worker on the remotion box
packages them to HLS and reports back.

client/src/pages/admin.tsx

@@ -15,6 +15,8 @@ import { apiRequest } from "@/lib/queryClient";
 import type { Video } from "@shared/schema";
 import { Shield, Edit, Upload, Search, Filter, Save, X, Sparkles, Loader2 } from "lucide-react";
 import HeaderAd from "@/components/HeaderAd";
+import VideoUpload from "@/components/video-upload";
+import InventoryPanel from "@/components/inventory-panel";
 
 export default function AdminPage() {
   const { user, isLoading: authLoading, isAuthenticated, isAdmin } = useAuth();
@@ -98,6 +100,8 @@ export default function AdminPage() {
 
           {/* Main Content */}
           <div className="lg:col-span-3">
+            <VideoUpload />
+            <InventoryPanel />
             <VideoManagement search={search} onEditVideo={setSelectedVideo} onOpenDialog={setEditDialogOpen} />
           </div>
         </div>