fix: resolve live monitoring bug, remove deprecated parameters, and auto-start Python worker

- Fix live monitoring style error by calling _live_monitor() helper directly
- Remove default_parameters duplication from 10 workflow metadata files
- Remove deprecated volume_mode parameter from 26 files across CLI, SDK, backend, and docs
- Configure Python worker to start automatically with docker compose up
- Clean up constants, validation, completion, and example files

Fixes #
- Live monitoring now works correctly with --live flag
- Workflow metadata follows JSON Schema standard
- Cleaner codebase without deprecated volume_mode
- Python worker (most commonly used) starts by default

backend/toolbox/workflows/python_sast/metadata.yaml

@@ -18,12 +18,6 @@ tags:
 # Using "shared" mode for read-only SAST analysis (no file modifications)
 workspace_isolation: "shared"
 
-default_parameters:
-  dependency_config: {}
-  bandit_config: {}
-  mypy_config: {}
-  reporter_config: {}
-
 parameters:
   type: object
   properties: