Simplify job status updates API

- Return all active jobs on every poll instead of timestamp-based filtering
- Ensures status changes are always reflected in the UI
- Works with or without updated_at column in database

vidai/web.py

@@ -509,40 +509,14 @@ def api_job_status(job_id):
 def api_job_status_updates():
     """API endpoint for job status updates."""
     user = get_current_user_session()
-    since = request.args.get('since', '0')
 
-    try:
-        since_timestamp = int(since) / 1000.0  # Convert from milliseconds to seconds
-    except ValueError:
-        since_timestamp = 0
-
-    # Get updated jobs since the given timestamp
+    # Get all active jobs for the user (not completed/failed)
     queue_items = get_user_queue_items(user['id'])
     updates = []
 
     for job in queue_items:
-        # Convert job timestamps to comparable format (use updated_at if available, otherwise created_at)
-        job_time = job.get('updated_at') or job.get('created_at')
-        if isinstance(job_time, str):
-            # Parse timestamp string
-            from datetime import datetime
-            try:
-                job_timestamp = datetime.fromisoformat(job_time.replace('Z', '+00:00')).timestamp()
-            except:
-                job_timestamp = 0
-        else:
-            job_timestamp = job_time or 0
-
-        # For jobs without updated_at, use created_at but only include if status changed recently
-        # Since we can't track updates, include all active jobs
-        include_job = False
-        if 'updated_at' in job and job['updated_at']:
-            include_job = job_timestamp > since_timestamp
-        else:
-            # For jobs without updated_at, include if they're active (not completed/failed)
-            include_job = job['status'] not in ['completed', 'failed']
-
-        if include_job:
+        # Include all active jobs (queued, processing, cancelled)
+        if job['status'] not in ['completed', 'failed']:
             updates.append({
                 'id': job['id'],
                 'status': job['status'],