Add plane-sync.js one-way (Plane -> TODO.md) synchronization for the
MITHOME project. Config reads from .mcp.json with .env override. CLI:
--list, --dry-run, --yes, --project, --verbose, --help. Interactive
discrepancy resolution (status mismatches, orphans, new issues), backup
before write, rate limiting. Pure functions covered by node:test unit
tests. Includes PLANE-SYNC-GUIDE.md and TODO.md changelog entry.
