Phase 2.1 S3+M2 (local) — themeStore persist v4 + pin

8/8 Playwright checks passed.

App boots cleanly with the new persistedstate v4 key — login page renders, localStorage is writable.
Injecting {theme:'dark', primaryColor:'green'} into theme-settings and reloading hydrates only those two keys back (no silent full-state persistence).
Revert round-trip to {theme:'light', primaryColor:'blue'} preserves shape.
Backend /health + an authed route exercised — DB pool healthy post-migration, no 5xx.
commerce.pin_identities created with 9 expected columns, 2 indexes, 4 FKs — schema snapshot below.
Table starts empty (no stray seed data).

commerce.pin_identities — schema snapshot