fix: broadcast S3DownloadFinished event to hide download message

- Make S3DownloadFinished implement ShouldBroadcast
- Add listener in Import component to handle S3DownloadFinished event
- Set s3DownloadInProgress to false when download completes
- This hides "Downloading from S3..." message after download finishes
- Follows the same pattern as DatabaseStatusChanged event

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/Events/S3DownloadFinished.php

@@ -3,16 +3,32 @@
 namespace App\Events;
 
 use App\Models\Server;
+use App\Models\User;
 use Illuminate\Broadcasting\InteractsWithSockets;
+use Illuminate\Broadcasting\PrivateChannel;
+use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
 use Illuminate\Foundation\Events\Dispatchable;
 use Illuminate\Queue\SerializesModels;
 
-class S3DownloadFinished
+class S3DownloadFinished implements ShouldBroadcast
 {
     use Dispatchable, InteractsWithSockets, SerializesModels;
 
-    public function __construct($data)
+    public int|string|null $userId = null;
+
+    public function __construct($teamId, $data = null)
     {
+        // Get the first user from the team to broadcast to
+        $user = User::whereHas('teams', function ($query) use ($teamId) {
+            $query->where('teams.id', $teamId);
+        })->first();
+
+        $this->userId = $user?->id;
+
+        if (is_null($data)) {
+            return;
+        }
+
         $containerName = data_get($data, 'containerName');
         $serverId = data_get($data, 'serverId');
 
@@ -24,4 +40,15 @@ class S3DownloadFinished
             instant_remote_process($commands, Server::find($serverId), throwError: false);
         }
     }
+
+    public function broadcastOn(): ?array
+    {
+        if (is_null($this->userId)) {
+            return [];
+        }
+
+        return [
+            new PrivateChannel("user.{$this->userId}"),
+        ];
+    }
 }