Fix real-time job status updates

- Add updated_at column to processing_queue table for tracking status changes
- Update update_queue_status to set updated_at timestamp on changes
- Modify job_status_updates API to use updated_at instead of created_at
- Add random parameter to API requests to prevent browser caching

vidai/database.py

@@ -249,6 +249,7 @@ def init_db(conn) -> None:
                 result TEXT,
                 error_message TEXT,
                 created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
                 started_at TIMESTAMP NULL,
                 completed_at TIMESTAMP NULL,
                 estimated_time INT,
@@ -271,6 +272,7 @@ def init_db(conn) -> None:
                 result TEXT,
                 error_message TEXT,
                 created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                 started_at TIMESTAMP,
                 completed_at TIMESTAMP,
                 estimated_time INTEGER,
@@ -640,6 +642,16 @@ def init_db(conn) -> None:
         # Column might already exist
         pass
 
+    # Add updated_at column to processing_queue table if it doesn't exist
+    try:
+        if config['type'] == 'mysql':
+            cursor.execute('ALTER TABLE processing_queue ADD COLUMN updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP')
+        else:
+            cursor.execute('ALTER TABLE processing_queue ADD COLUMN updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP')
+    except:
+        # Column might already exist
+        pass
+
     # Cluster processes table
     if config['type'] == 'mysql':
         cursor.execute('''
@@ -1173,7 +1185,7 @@ def update_queue_status(queue_id: int, status: str, result: dict = None, error:
     conn = get_db_connection()
     cursor = conn.cursor()
 
-    update_fields = ['status = ?']
+    update_fields = ['status = ?', 'updated_at = CURRENT_TIMESTAMP']
     params = [status]
 
     if status == 'processing':

vidai/web.py

@@ -521,8 +521,8 @@ def api_job_status_updates():
     updates = []
 
     for job in queue_items:
-        # Convert job timestamps to comparable format
-        job_time = job.get('created_at')
+        # 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