Update start.py

start.py

@@ -26,7 +26,16 @@ def add_column_if_missing(db_path, table, column, col_type):
 db_path = "/data/app.db"
 print("Checking for schema migrations...")
 add_column_if_missing(db_path, "producers", "email", "VARCHAR(255)")
-add_column_if_missing(db_path, "approvals", "approval_token", "VARCHAR(64) UNIQUE")
+add_column_if_missing(db_path, "approvals", "approval_token", "VARCHAR(64)")
+# Add unique index separately (SQLite doesn't support UNIQUE in ALTER TABLE)
+conn = sqlite3.connect(db_path)
+try:
+    conn.execute("CREATE UNIQUE INDEX IF NOT EXISTS ix_approvals_approval_token ON approvals(approval_token)")
+    conn.commit()
+    print("  Added unique index on approvals.approval_token")
+except Exception as e:
+    print(f"  Index already exists or skipped: {e}")
+conn.close()
 print("Schema migrations complete.")