Fix cluster master to look for queued jobs instead of processing

- Jobs are inserted as 'queued', not 'processing'
- Cluster master now finds and assigns queued jobs

vidai/cluster_master.py

@@ -1290,7 +1290,7 @@ class ClusterMaster:
                 from .database import get_db_connection
                 conn = get_db_connection()
                 cursor = conn.cursor()
-                cursor.execute('SELECT * FROM processing_queue WHERE status = ? AND (job_id IS NULL OR job_id = ?)', ('processing', ''))
+                cursor.execute('SELECT * FROM processing_queue WHERE status = ? AND (job_id IS NULL OR job_id = ?)', ('queued', ''))
                 jobs = cursor.fetchall()
                 conn.close()