fix(03): WR-06 surface move-failed distinctly with re-save guidance

apps/pwa/src/components/SyncStateToast.tsx

@@ -50,7 +50,12 @@ export function SyncStateToast() {
   })
 
   const status = data?.status
-  const isConflict = status === 'failed' && data?.error?.includes('412')
+  // WR-06: an edit-as-move whose create hits 412 dead-ends with no retry path (the
+  // original event is preserved, but the new uid's only outbox row is failed). The
+  // worker tags that case with a 'move-failed:' lastError so we can show distinct copy
+  // guiding the user to re-open and re-save, rather than the etag-conflict copy.
+  const isMoveFailed = status === 'failed' && !!data?.error?.startsWith('move-failed')
+  const isConflict = status === 'failed' && !isMoveFailed && data?.error?.includes('412')
   const isPersistent = status === 'failed' || status === 'dead'
 
   // Invalidate events on done OR on conflict (D-06/D-08)
@@ -113,6 +118,16 @@ export function SyncStateToast() {
         aria-hidden="true"
       />
     )
+  } else if (isMoveFailed) {
+    // WR-06: the move could not be applied; the original event is unchanged.
+    copy = "Couldn't move the event. Open it and save again."
+    icon = (
+      <AlertCircle
+        size={14}
+        style={{ color: 'var(--color-destructive)', flexShrink: 0 }}
+        aria-hidden="true"
+      />
+    )
   } else if (status === 'failed') {
     copy = "Didn't save. Try again."
     icon = (