v0.8.7

What's Changed

• chore(agents): rework auditor/architect prompts and drop impact-reviewer subagent (#93)

The dedicated impact-reviewer subagent is removed and whole-change impact analysis is folded directly into the auditor-loop audit workflow. Auditor and architect agent prompts are tightened around the minimal-design ladder and single-source-of-truth planning:

• Auditor-loop final audit rules now require a direct "Whole-Change Impact Analysis" covering duplication, parallel implementations, missed callers/companion updates, and unreachable/superseded code — no separate impact agent.
• The auditor findings lifecycle is simplified (read → manifest → reconcile → inspect → validate → persist) with review-write fields documented.
• Architect research/design steps mandate reusing existing code, the standard library, native platforms, or installed dependencies before new code; plans must name a single owner for shared behavior, prohibit parallel implementations, and demand explicit caller migrations and removal of obsolete code paths.

Full Changelog: v0.8.6...v0.8.7