Add more debugging to job loading and fix sorting

- Add prints in load_jobs and save_jobs to track job persistence
- Change job sorting to use string timestamps to avoid type comparison errors

app.py

@@ -310,12 +310,14 @@ def cleanup_temp_files():
 
 def load_jobs():
     """Load jobs from JSON file."""
+    print(f"Loading jobs from {JOBS_FILE}")
     if os.path.exists(JOBS_FILE):
         try:
             with open(JOBS_FILE, 'r') as f:
                 jobs = json.load(f)
+                print(f"Loaded raw jobs: {list(jobs.keys())}")
                 # Convert timestamp strings back to datetime objects
-                for job in jobs.values():
+                for job_id, job in jobs.items():
                     if 'timestamp' in job and isinstance(job['timestamp'], str):
                         try:
                             # Handle the format: "2025-11-05 09:10:23.730974"
@@ -323,13 +325,18 @@ def load_jobs():
                         except (ValueError, TypeError):
                             # If conversion fails, keep as string
                             pass
+                print(f"Processed {len(jobs)} jobs")
                 return jobs
-        except:
+        except Exception as e:
+            print(f"Error loading jobs: {e}")
             return {}
+    else:
+        print("Jobs file does not exist")
     return {}
 
 def save_jobs(jobs):
     """Save jobs to JSON file."""
+    print(f"Saving {len(jobs)} jobs to {JOBS_FILE}")
     with open(JOBS_FILE, 'w') as f:
         json.dump(jobs, f, indent=2, default=str)
 
@@ -427,7 +434,7 @@ def jobs():
     jobs = load_jobs()
     print(f"Loaded {len(jobs)} jobs")
     # Sort jobs by timestamp, newest first
-    sorted_jobs = sorted(jobs.values(), key=lambda x: x['timestamp'], reverse=True)
+    sorted_jobs = sorted(jobs.values(), key=lambda x: str(x.get('timestamp', '')), reverse=True)
     return render_template('jobs.html', jobs=sorted_jobs, user_info=get_user_info())
 
 @app.route('/job/<job_id>')