f3e6586a7a
Fix ruff import-boundary enforcement: replace stray TID252 ignore with proper TID251 banned-api rule so `planemapper.main` cannot import from `planemapper.provisioning.*`. Add deferred-work.md. Advance sprint status 1-1 → done. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>