Migrate primary to labeled path, remove all flat-path fallback logic

agentclaw/app/agent_claw_main/main.py

@@ -127,15 +127,6 @@ def list_google_accounts() -> str:
                         accounts[label] = val.get('email', s['Name'])
                     except Exception:
                         accounts[label] = s['Name']
-            # Also check flat path as 'primary' if not already in labeled list
-            if 'primary' not in accounts:
-                flat = f'agent-claw/google-credentials/{safe_actor_id}'
-                try:
-                    import json as _json2
-                    val = _json2.loads(sm.get_secret_value(SecretId=flat)['SecretString'])
-                    accounts['primary'] = val.get('email', flat)
-                except Exception:
-                    pass
             if accounts:
                 parts = [f'{label} ({email})' for label, email in accounts.items()]
                 return 'Connected Google accounts: ' + ', '.join(parts)