Add job deletion functionality

- Add delete_queue_item function to database.py with ownership validation
- Add delete_job method to QueueManager class
- Add /job/<id>/delete endpoint in web.py with user authentication
- Update history.html template to show delete button for queued jobs
- Only allow users to delete their own jobs or admins to delete any job
- Add confirmation dialog for job deletion

templates/history.html

@@ -8,7 +8,7 @@
     .history-table { background: white; border-radius: 12px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); overflow: hidden; }
     .table-header { padding: 2rem; border-bottom: 1px solid #e5e7eb; }
     .table-header h2 { margin: 0; color: #1e293b; }
-    .job-row { display: grid; grid-template-columns: 1fr 2fr 1fr 100px 100px; gap: 1rem; padding: 1rem 2rem; border-bottom: 1px solid #f1f5f9; align-items: center; }
+    .job-row { display: grid; grid-template-columns: 1fr 2fr 1fr 100px 100px 120px; gap: 1rem; padding: 1rem 2rem; border-bottom: 1px solid #f1f5f9; align-items: center; }
     .job-row:last-child { border-bottom: none; }
     .job-type { font-weight: 600; color: #1e293b; }
     .job-data { color: #64748b; font-size: 0.9rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@@ -159,11 +159,17 @@
                     {{ job.status.title() }}
                 </span>
                 <div class="job-tokens">{{ job.used_tokens or 0 }}</div>
-                {% if job.status == 'completed' %}
-                <a href="/job_result/{{ job.id }}" class="view-result-link">View Result</a>
-                {% elif job.status == 'processing' and job.result %}
-                <div class="job-progress">{{ job.result.get('status', 'Processing...') }}</div>
-                {% endif %}
+                <div class="job-actions">
+                    {% if job.status == 'completed' %}
+                    <a href="/job_result/{{ job.id }}" class="view-result-link">View Result</a>
+                    {% elif job.status == 'processing' and job.result %}
+                    <div class="job-progress">{{ job.result.get('status', 'Processing...') }}</div>
+                    {% elif job.status == 'queued' %}
+                    <form method="post" action="/job/{{ job.id }}/delete" style="display: inline;" onsubmit="return confirm('Are you sure you want to delete this queued job?')">
+                        <button type="submit" class="delete-btn" style="background: #dc2626; color: white; border: none; padding: 0.25rem 0.5rem; border-radius: 4px; font-size: 0.8rem; cursor: pointer;">Delete</button>
+                    </form>
+                    {% endif %}
+                </div>
             </div>
             {% endfor %}
             {% if not queue_items %}

vidai/database.py

@@ -1201,6 +1201,35 @@ def get_queue_position(queue_id: int) -> int:
     return row['position'] + 1 if row else 0
 
 
+def delete_queue_item(queue_id: int, user_id: int = None) -> bool:
+    """Delete a queue item. If user_id is provided, only allow deletion by the owner or admin."""
+    conn = get_db_connection()
+    cursor = conn.cursor()
+
+    if user_id is not None:
+        # Check ownership or admin role
+        cursor.execute('SELECT user_id FROM processing_queue WHERE id = ?', (queue_id,))
+        row = cursor.fetchone()
+        if not row:
+            conn.close()
+            return False
+
+        if row['user_id'] != user_id:
+            # Check if user is admin
+            cursor.execute('SELECT role FROM users WHERE id = ?', (user_id,))
+            user_row = cursor.fetchone()
+            if not user_row or user_row['role'] != 'admin':
+                conn.close()
+                return False
+
+    # Delete the queue item
+    cursor.execute('DELETE FROM processing_queue WHERE id = ?', (queue_id,))
+    conn.commit()
+    success = cursor.rowcount > 0
+    conn.close()
+    return success
+
+
 # User management functions
 def get_all_users() -> List[Dict[str, Any]]:
     """Get all users for admin panel."""

vidai/queue.py

@@ -60,6 +60,11 @@ class QueueManager:
         """Get all jobs for a user."""
         return get_user_queue_items(user_id)
 
+    def delete_job(self, queue_id: int, user_id: int = None) -> bool:
+        """Delete a job from the queue."""
+        from .database import delete_queue_item
+        return delete_queue_item(queue_id, user_id)
+
     def _process_queue(self) -> None:
         """Background thread to process queued jobs."""
         while self.running:

vidai/web.py

@@ -321,6 +321,21 @@ def history():
                             active_page='history')
 
 
+@app.route('/job/<int:job_id>/delete', methods=['POST'])
+@login_required
+def delete_job(job_id):
+    """Delete a job from the queue."""
+    user = get_current_user_session()
+    from .queue import queue_manager
+
+    if queue_manager.delete_job(job_id, user['id']):
+        flash('Job deleted successfully!', 'success')
+    else:
+        flash('Failed to delete job or access denied.', 'error')
+
+    return redirect(url_for('history'))
+
+
 @app.route('/job_result/<int:job_id>')
 @login_required
 def job_result(job_id):