pb-refine

Apply feedback to an existing spec. This closes the gap between one-shot planning and iterative refinement.

Workflow

1. Locate and load the spec

• List specs/, find the directory ending with -<feature-name>; on multiple matches take the latest date prefix; on no match, report and stop (/pb-plan first).
• Load design.md, tasks.md, AGENTS.md (read-only).

2. Apply feedback to design.md

• If behavior changes, update the TDD & Mutation Testing Strategy section first (type contracts, invariants, test matrix, mutation scope).
• Precise edits only — never rewrite whole files, preserve unaffected sections verbatim.
• Update Status → Revised, add a ## Revision History table entry (| Date | Change | Reason |).

3. Cascade to tasks.md