Files
freemo c4f71e930d feat(concurrency): add plan resume
Implement step-level progress persistence and plan resume with graceful
shutdown handling.

- Add ResumeCheckpoint, ResumeMetadata, ResumeEligibility, ResumeSummary
  domain models (resume.py)
- Add PlanResumeService with validate_eligibility(), build_resume_summary(),
  resume_plan(dry_run), record_step_checkpoint(), record_shutdown()
- Add last_completed_step and last_checkpoint_id fields to Plan model
- Add 'plan resume' CLI command with --dry-run flag
- Update plan lifecycle docs (ADR-006) with resume behavior section
- Add Behave tests (24 scenarios in plan_resume.feature)
- Add Robot Framework integration tests (10 tests)
- Add ASV benchmarks for resume overhead

Closes #328
2026-02-25 14:00:04 -05:00
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