feat(review): #90 photo strip — keep/remove, drag-reorder, leftmost=primary, persist

REVIEW-5 / PUBLISH-45: owner edits the stored photo lineup in Review — tap a
card to keep/remove, drag to reorder, leftmost kept photo = primary (Woo
cover). The kept set must contain a clean calibration + its dimension-overlay
copy; publish is blocked until it does.

- backend: role column on slab_photos (schema + idempotent _migrate ALTER),
  role in photo CRUD + new DELETE endpoint, Woo image order by role-rank
  (clean→overlay→batch) per PUBLISH-45
- frontend: Review photo strip (render from listPhotos, keep/remove,
  HTML5 drag-reorder, dynamic PRIMARY badge from .primary class),
  persistLineup() re-seq kept + drop removed before entering Publish
- tests: lineup.ts unit, e2e review-photo-strip.spec, backend role + order

Refs: #90, REVIEW-5, PUBLISH-45

backend/db/schema.sql

@@ -57,6 +57,9 @@ CREATE TABLE IF NOT EXISTS slab_photos (
     slab_id TEXT NOT NULL,
     seq INTEGER NOT NULL,
     is_calibration INTEGER NOT NULL DEFAULT 0 CHECK(is_calibration IN (0,1)),
+    -- #90: lineup kind (clean cal / dimension-overlay copy / batch sibling).
+    -- Drives the Review photo strip labels and the PUBLISH-45 Woo image order.
+    role TEXT NOT NULL DEFAULT 'batch' CHECK(role IN ('calibration','overlay','batch')),
     original_blob BLOB,
     processed_blob BLOB,
     width_px INTEGER,