docs: update CLI command syntax across workflow documentation

- Updated marketplace commands: `marketplace --action` → `market` subcommands
- Updated wallet commands: direct flags → `wallet` subcommands
- Updated AI commands: `ai-submit`, `ai-status` → `ai submit`, `ai status`
- Updated blockchain commands: `chain` → `blockchain info`
- Standardized command structure across all workflow files
- Affected files: MULTI_NODE_MASTER_INDEX.md, TEST_MASTER_INDEX.md, multi-node-blockchain-marketplace

services/monitor.py

@@ -37,8 +37,11 @@ def main():
                         logger.info(f'Marketplace: {len(listings)} GPU listings')
             
             time.sleep(30)
-        except Exception as e:
-            logger.error(f'Monitoring error: {e}')
+        except (json.JSONDecodeError, FileNotFoundError, PermissionError, IOError) as e:
+            logger.error(f'Monitoring error: {type(e).__name__}: {e}')
+            time.sleep(60)
+        except psutil.Error as e:
+            logger.error(f'System monitoring error: {type(e).__name__}: {e}')
             time.sleep(60)
 
 if __name__ == "__main__":