refactor(cli): move cm_cli to top-level package and remove dead cli-only-mode (#2548)

- Move cm_cli from comfyui_manager/cm_cli/ to top-level cm_cli/ package
- Convert relative imports to absolute imports
- Remove non-functional cli-only-mode command (flag was never checked)
- Update docs: python cm-cli.py → cm-cli entrypoint
- Update prestartup snapshot restore to use -m cm_cli
- Version bump to 4.1b1

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

comfyui_manager/glob/manager_core.py

@@ -41,7 +41,7 @@ from ..common.enums import NetworkMode, SecurityLevel, DBMode
 from ..common import context
 
 
-version_code = [4, 0, 5]
+version_code = [4, 1]
 version_str = f"V{version_code[0]}.{version_code[1]}" + (f'.{version_code[2]}' if len(version_code) > 2 else '')