feat(fase-5.10): /lists/[id] row redesign — buttons + swipe-toggle + overlay

Replaces the checkbox/hover-delete model with an explicit gesture+overlay
flow on /lists/[id].

Row anatomy (new)
  [drag-handle]  [name as button]  [qty stepper  − N +]
  - No checkbox in normal mode.
  - Checked items render with strikethrough + muted text.
  - Drag handle always visible on mobile; revealed on hover on desktop
    (md:opacity-0 md:group-hover:opacity-100). The handle owns the drag
    (pointerdown → dragEnabled=true), so row swipes + taps keep working.

Swipe gestures (symmetric toggle, no delete)
  unchecked + swipe RIGHT → mark checked (green success reveal)
  checked   + swipe LEFT  → mark unchecked (neutral reveal)
  opposite direction for each state is a no-op (snaps back).
  SWIPE_COMMIT_THRESHOLD=120 (was 200 for delete); REVEAL_WIDTH=96.
  Symmetry means undo is the inverse swipe — no undoQueue on toggles.

Double-tap overlay (name + delete + confirm)
  Short tap: no-op. Two taps within DOUBLE_TAP_WINDOW_MS (300 ms) open a
  full-screen dialog (bottom sheet on mobile) with:
    - X close button (top-right)
    - name input
    - Delete button (red) → scheduleUndoable → UndoToast
    - Confirm button (primary) → updateItem({ name })
  Click outside / Escape / X all dismiss without saving.

Tests
  items.test.ts
    D-03 rewritten: double-tap opens overlay, value matches, X closes.
    D-04 rewritten: overlay Delete removes the row; toast locator scoped
      out of itemRow so it doesn't shadow the assertion.
  realtime.test.ts
    R-E-02 updated: Ana renames via overlay → Borja sees new name over
      Realtime UPDATE. (The check/uncheck path is now gestural only and
      chromium touch emulation is too flaky to drive it in E2E; Vitest
      integration R-02 still covers the UPDATE-row-payload invariant.)
  mobile-swipe-delete.test.ts stays describe.skip — will be renamed and
  rewritten for the new semantics once WebKit install lands in CI.

i18n
  list_qty_decrease, list_qty_increase, list_reorder_handle,
  list_edit_item, list_confirm, list_close — en/es.

Verification
  just test-e2e → 40 passed, 2 skipped (same as pre-change).
  Type-check clean.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/web/messages/en.json

@@ -164,5 +164,11 @@
 	"sync_syncing": "Syncing…",
 	"undo": "Undo",
 	"undo_deleted_item": "Deleted {name}",
-	"list_item_delete_aria": "Delete item"
+	"list_item_delete_aria": "Delete item",
+	"list_qty_decrease": "Decrease quantity",
+	"list_qty_increase": "Increase quantity",
+	"list_reorder_handle": "Reorder",
+	"list_edit_item": "Edit item",
+	"list_confirm": "Confirm",
+	"list_close": "Close"
 }

apps/web/messages/es.json

@@ -164,5 +164,11 @@
 	"sync_syncing": "Sincronizando…",
 	"undo": "Deshacer",
 	"undo_deleted_item": "{name} eliminado",
-	"list_item_delete_aria": "Eliminar producto"
+	"list_item_delete_aria": "Eliminar producto",
+	"list_qty_decrease": "Reducir cantidad",
+	"list_qty_increase": "Aumentar cantidad",
+	"list_reorder_handle": "Reordenar",
+	"list_edit_item": "Editar producto",
+	"list_confirm": "Confirmar",
+	"list_close": "Cerrar"
 }