fc3k(ui): per-tag dots-menu with Merge + Delete actions; Tier-B count-surfacing modal

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend/src/components/discovery/TagCard.vue

@@ -44,7 +44,31 @@
       </div>
       <div class="fc-tagcard__meta">
         <v-chip size="x-small" label>{{ card.kind }}</v-chip>
-        <span class="fc-tagcard__count">{{ card.image_count }}</span>
+        <div class="fc-tagcard__meta-right">
+          <span class="fc-tagcard__count">{{ card.image_count }}</span>
+          <v-menu>
+            <template #activator="{ props: act }">
+              <v-btn
+                class="fc-tagcard__menu"
+                icon="mdi-dots-vertical" size="x-small" variant="text"
+                v-bind="act" @click.stop
+              />
+            </template>
+            <v-list density="compact">
+              <v-list-item
+                title="Merge with…"
+                prepend-icon="mdi-call-merge"
+                @click="$emit('merge-with', card)"
+              />
+              <v-list-item
+                title="Delete tag"
+                prepend-icon="mdi-delete"
+                base-color="error"
+                @click="$emit('delete', card)"
+              />
+            </v-list>
+          </v-menu>
+        </div>
       </div>
     </v-card-text>
   </v-card>
@@ -54,7 +78,7 @@
 import { ref } from 'vue'
 
 const props = defineProps({ card: { type: Object, required: true } })
-const emit = defineEmits(['open', 'rename', 'manage', 'read'])
+const emit = defineEmits(['open', 'rename', 'manage', 'read', 'merge-with', 'delete'])
 
 const editing = ref(false)
 const draft = ref('')
@@ -106,4 +130,13 @@ function submit() {
 }
 .fc-tagcard:hover .fc-tagcard__edit { opacity: .6; }
 .fc-tagcard__edit:hover { opacity: 1; }
+.fc-tagcard__meta-right {
+  display: flex; align-items: center; gap: 4px;
+}
+.fc-tagcard__menu {
+  opacity: 0;
+  transition: opacity .15s ease;
+}
+.fc-tagcard:hover .fc-tagcard__menu { opacity: .6; }
+.fc-tagcard__menu:hover { opacity: 1; }
 </style>

frontend/src/views/TagsView.vue

@@ -27,6 +27,7 @@
       <TagCard
         v-for="c in store.cards" :key="c.id" :card="c"
         @open="openTag" @rename="onRename" @manage="onManage" @read="onRead"
+        @merge-with="onMergeWith" @delete="onDeleteTag"
       />
     </div>
 
@@ -41,6 +42,49 @@
       @confirm="confirmMerge"
       @cancel="pendingMerge = null"
     />
+
+    <v-dialog v-model="mergePickerOpen" max-width="520">
+      <v-card>
+        <v-card-title>Merge “{{ mergeSource?.name }}” into…</v-card-title>
+        <v-card-text>
+          <p class="text-body-2 mb-3" style="opacity: 0.7;">
+            Pick the target tag. Source tag will be deleted; all its
+            image associations will move to the target. Must be same
+            kind ({{ mergeSource?.kind }}).
+          </p>
+          <v-autocomplete
+            v-model="mergeTargetId"
+            :items="mergeHits" item-title="name" item-value="id"
+            :loading="mergeLoading"
+            density="compact" variant="outlined" hide-details
+            placeholder="Search target tag…" no-filter
+            @update:search="onMergeSearch"
+          />
+        </v-card-text>
+        <v-card-actions>
+          <v-spacer />
+          <v-btn variant="text" @click="mergePickerOpen = false">Cancel</v-btn>
+          <v-btn
+            color="warning" variant="flat" rounded="pill"
+            :disabled="!mergeTargetId"
+            @click="onMergeConfirm"
+          >Merge</v-btn>
+        </v-card-actions>
+      </v-card>
+    </v-dialog>
+
+    <DestructiveConfirmModal
+      v-model="deleteTagModalOpen"
+      action="delete"
+      kind="tag"
+      :run-id="deleteTagTarget?.id || 0"
+      tier="B"
+      :projected-counts="{ associations: deleteTagUsage }"
+      :description="deleteTagTarget
+        ? `Delete tag “${deleteTagTarget.name}” and remove all image associations.`
+        : ''"
+      @confirm="onDeleteTagConfirm"
+    />
   </v-container>
 </template>
 
@@ -48,8 +92,11 @@
 import { ref, watch, onMounted, onUnmounted } from 'vue'
 import { useRouter } from 'vue-router'
 import { useTagDirectoryStore } from '../stores/tagDirectory.js'
+import { useAdminStore } from '../stores/admin.js'
+import { useApi } from '../composables/useApi.js'
 import TagCard from '../components/discovery/TagCard.vue'
 import MergeConfirmDialog from '../components/discovery/MergeConfirmDialog.vue'
+import DestructiveConfirmModal from '../components/modal/DestructiveConfirmModal.vue'
 
 // Must stay a subset of the backend TagKind enum (character, fandom,
 // general, series, archive, post, meta, rating). 'fandom' is this
@@ -106,6 +153,80 @@ function onManage(id) {
 function onRead(id) {
   router.push({ name: 'series-read', params: { tagId: id } })
 }
+
+// --- FC-3k tag merge + delete ----------------------------------------
+
+const adminStore = useAdminStore()
+const api = useApi()
+
+// Tag merge via dots-menu (separate from inline-rename collision flow above)
+const mergePickerOpen = ref(false)
+const mergeSource = ref(null)
+const mergeTargetId = ref(null)
+const mergeHits = ref([])
+const mergeLoading = ref(false)
+let mergeDebounce = null
+
+function onMergeWith(card) {
+  mergeSource.value = card
+  mergeTargetId.value = null
+  mergeHits.value = []
+  mergePickerOpen.value = true
+}
+
+function onMergeSearch(q) {
+  if (mergeDebounce) clearTimeout(mergeDebounce)
+  if (!q) { mergeHits.value = []; return }
+  mergeDebounce = setTimeout(async () => {
+    mergeLoading.value = true
+    try {
+      const hits = await api.get('/api/tags/autocomplete', {
+        params: { q, kind: mergeSource.value?.kind, limit: 20 },
+      })
+      mergeHits.value = (hits || []).filter(
+        (h) => h.id !== mergeSource.value?.id,
+      )
+    } finally {
+      mergeLoading.value = false
+    }
+  }, 250)
+}
+
+async function onMergeConfirm() {
+  if (!mergeSource.value || !mergeTargetId.value) return
+  try {
+    await adminStore.mergeTags(mergeTargetId.value, mergeSource.value.id)
+    mergePickerOpen.value = false
+    store.reset()
+  } catch {
+    // adminStore.lastError already set; UI surfaces it elsewhere.
+  }
+}
+
+// Tag delete via dots-menu (Tier B)
+const deleteTagModalOpen = ref(false)
+const deleteTagTarget = ref(null)
+const deleteTagUsage = ref(0)
+
+async function onDeleteTag(card) {
+  deleteTagTarget.value = card
+  try {
+    deleteTagUsage.value = await adminStore.tagUsageCount(card.id)
+  } catch {
+    deleteTagUsage.value = 0
+  }
+  deleteTagModalOpen.value = true
+}
+
+async function onDeleteTagConfirm() {
+  if (!deleteTagTarget.value) return
+  try {
+    await adminStore.deleteTag(deleteTagTarget.value.id)
+    store.reset()
+  } catch {
+    // adminStore.lastError already set.
+  }
+}
 </script>
 
 <style scoped>