Rename kb_workflow.py to cli.py to avoid conflict with kb_workflow/ package.
Add __main__.py to support `python -m kb_workflow` execution.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Remove kb-bilibili-metadata/ and kb-zhihu-metadata/ directories
- Create kb_workflow/__init__.py to export main and process_command
- Update test_cli/test_process_command.py imports for new package structure
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>