Summary

• add grouped import triage by source and kind
• add import dismiss and filtered batch promotion
• include pending import counts in work brief output

Verification

• .venv/bin/python -m pytest tests/test_work_cmd.py -q
• .venv/bin/brigade work import triage --limit 10
• .venv/bin/brigade work import promote --all --source memory-care --kind task
• .venv/bin/brigade work import dismiss --reason "smoke cleanup"
• .venv/bin/brigade work task done
• .venv/bin/python -m pytest -q
• PYTHONPATH=$HOME/repos/content-guard/src python3 -m content_guard scan . --policy $HOME/repos/content-guard/policies/public-repo.json
• git diff --check