feat(ui): "Reject rest" per suggestion category — confirm the good, reject the rest

Each category section header gets a subtle "Reject rest" action that dismisses
every still-unhandled suggestion in it at once (store.dismissRemaining, parallel
dispatch). Canonical tags persist a rejection and stay flagged (reversible,
one-click un-reject); raw creates-new-tag rows drop client-side. Shows only when
the section has unhandled items. No confirm dialog — it's fully reversible.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CDgx8bQS5YrGRK76v8HUnM

frontend/src/stores/suggestions.js

@@ -218,6 +218,29 @@ export const useSuggestionsStore = defineStore('suggestions', () => {
     }
   }
 
+  // Reject every still-unhandled suggestion in a category in one go ("confirm
+  // the good ones, reject the rest" — operator-asked 2026-07-06). Canonical tags
+  // persist a rejection and STAY flagged rejected (reversible, one-click
+  // un-reject); raw creates-new-tag rows drop client-side. Dispatched in parallel
+  // so a big section clears fast.
+  async function dismissRemaining(category) {
+    const imageId = currentImageId
+    if (imageId == null) return
+    const targets = (byCategory.value[category] || []).filter((s) => !s.rejected)
+    if (!targets.length) return
+    const canon = targets.filter((s) => s.canonical_tag_id != null)
+    const raw = targets.filter((s) => s.canonical_tag_id == null)
+    await Promise.all(canon.map((s) =>
+      api.post(`/api/images/${imageId}/suggestions/dismiss`, {
+        body: { tag_id: s.canonical_tag_id },
+      })
+    ))
+    if (currentImageId === imageId) {
+      canon.forEach((s) => _setRejectedEverywhere(s, true))
+      raw.forEach((s) => _dropEverywhere(s))
+    }
+  }
+
   // Undo a per-image dismissal — the suggestion reverts to a live row.
   async function undismiss(suggestion) {
     const imageId = currentImageId
@@ -232,7 +255,7 @@ export const useSuggestionsStore = defineStore('suggestions', () => {
 
   return {
     byCategory, allByCategory, loading, error,
-    load, loadAll, accept, aliasAccept, removeAlias, dismiss, undismiss,
-    findPending
+    load, loadAll, accept, aliasAccept, removeAlias, dismiss, dismissRemaining,
+    undismiss, findPending
   }
 })