fix: use RedactingFormatter on stderr handler, update types and test mock

- stderr handler now uses RedactingFormatter to match file handlers
- restart path uses verbose=0 (int) instead of verbose=False (bool)
- test mock updated with new run_gateway(verbose, quiet, replace) signature

hermes_cli/gateway.py

@@ -2022,7 +2022,7 @@ def gateway_command(args):
 
             # Start fresh
             print("Starting gateway...")
-            run_gateway(verbose=False)
+            run_gateway(verbose=0)
     
     elif subcmd == "status":
         deep = getattr(args, 'deep', False)