Phase 1 — Tiny PR checklist

Remove // @ts-nocheck (2 files)
- Dry run: bash scripts/dev/phase1/remove-ts-nocheck.sh
- Apply: bash scripts/dev/phase1/remove-ts-nocheck.sh --apply
- Commit on update: git add -A && git commit -m "phase1: drop ts-nocheck headers (no behavior change)" && git push
MUI v4 → v5 imports (if any)
- Dry: bash scripts/dev/phase1/fix-mui-imports.sh --dry
- Apply in a tiny batch (1–3 files): --apply, commit & push.
A11y:
- bash scripts/dev/phase1/list-imgs-missing-alt.sh
- Fix each hit with meaningful alt, or alt="" when decorative.

Keep PRs tiny and non-breaking so upstream can merge at any time.