[codex] Cache Doctor OpenRouter results

[dankritz]

Summary

• Add an append-only 004_doctor_cache.sql migration with a doctor_cache table keyed by deployment.
• Cache OpenRouter-enhanced Doctor packets per related deployment, root-cause category, and OpenRouter model so switching between apps does not repeatedly call the LLM.
• Keep deterministic Doctor state recomputation cheap/current, then reuse cached AI enrichment when applicable.
• Fix healthy Doctor copy: healthy cards now say no repair is needed and the generated prompt no longer starts with a fix instruction.

Validation

• npm run typecheck --workspace @vibestack/api && npm run typecheck --workspace @vibestack/web
• npm run test --workspace @vibestack/api -- doctor.test.ts
• npm test
• npm run build
• npm run lint

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (4 files)

• apps/api/migrations/004_doctor_cache.sql - 0 issues
• apps/api/src/doctor.test.ts - 0 issues
• apps/api/src/doctor.ts - 0 issues
• apps/web/src/main.tsx - 0 issues

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_{Reviewed by grok-code-fast-1 · 128,359 tokens}