Add artist/performer information to videos and admin interface

Update database schema and admin UI to include an 'artist' field for videos, and configure agent integrations for database access.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 170e18f0-0f13-4eca-8643-546bba1dd8cc
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/8cc42625-c1f5-4e43-99bd-77f2c4dedee2/170e18f0-0f13-4eca-8643-546bba1dd8cc/QfqdFa4

client/src/pages/admin.tsx

@@ -212,6 +212,7 @@ function EditVideoDialog({
   const queryClient = useQueryClient();
   const [formData, setFormData] = useState({
     title: video.title,
+    artist: video.artist || "",
     description: video.description,
     contentType: video.contentType,
     genre: video.genre,
@@ -222,6 +223,7 @@ function EditVideoDialog({
   useEffect(() => {
     setFormData({
       title: video.title,
+      artist: video.artist || "",
       description: video.description,
       contentType: video.contentType,
       genre: video.genre,
@@ -331,7 +333,7 @@ function EditVideoDialog({
 
         <form onSubmit={handleSubmit} className="space-y-6">
           <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
-            <div className="md:col-span-2">
+            <div>
               <Label className="text-white/90">Title</Label>
               <Input
                 value={formData.title}
@@ -341,6 +343,16 @@ function EditVideoDialog({
               />
             </div>
 
+            <div>
+              <Label className="text-white/90">Artist/Izvajalec</Label>
+              <Input
+                value={formData.artist}
+                onChange={(e) => setFormData({ ...formData, artist: e.target.value })}
+                className="bg-white/10 border-white/20 text-white"
+                placeholder="Enter artist/band name..."
+              />
+            </div>
+
             <div className="md:col-span-2">
               <div className="flex items-center justify-between mb-2">
                 <Label className="text-white/90">Description</Label>