feat(fc-cleanup): Pinia store + 3 cards + CleanupView + SettingsView tab + TagMaintenanceCard moved from Maintenance + ruff lint fixes — Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend/src/views/CleanupView.vue

@@ -0,0 +1,31 @@
+<template>
+  <div class="fc-cleanup">
+    <p class="fc-muted text-body-2 mb-4">
+      Retroactive enforcement of import-filter rules. Each card scans the
+      existing library for content that the current import filters would
+      now exclude. Destructive — typed-token confirmation required.
+    </p>
+
+    <MinDimensionCard class="mb-4" />
+    <TransparencyAuditCard class="mb-4" />
+    <SingleColorAuditCard class="mb-4" />
+    <TagMaintenanceCard />
+  </div>
+</template>
+
+<script setup>
+import MinDimensionCard from '../components/cleanup/MinDimensionCard.vue'
+import TransparencyAuditCard from '../components/cleanup/TransparencyAuditCard.vue'
+import SingleColorAuditCard from '../components/cleanup/SingleColorAuditCard.vue'
+// Reuse existing TagMaintenanceCard (FC-3k) as-is — it already handles
+// preview + commit of prune-unused-tags via the admin store. Operator
+// confirmed 2026-05-26: don't duplicate into a new UnusedTagsCard.
+// MaintenancePanel drops its TagMaintenanceCard reference in the
+// SettingsView edit (Task 16) so this is now the sole rendering site.
+import TagMaintenanceCard from '../components/settings/TagMaintenanceCard.vue'
+</script>
+
+<style scoped>
+.fc-cleanup { max-width: 900px; }
+.fc-muted { color: rgb(var(--v-theme-on-surface-variant)); }
+</style>

frontend/src/views/SettingsView.vue

@@ -14,6 +14,7 @@
       <v-tab value="overview">Overview</v-tab>
       <v-tab value="activity">Activity</v-tab>
       <v-tab value="import">Import</v-tab>
+      <v-tab value="cleanup">Cleanup</v-tab>
       <v-tab value="maintenance">Maintenance</v-tab>
     </v-tabs>
 
@@ -53,6 +54,10 @@
         <ImportFiltersForm />
       </v-window-item>
 
+      <v-window-item value="cleanup">
+        <CleanupView />
+      </v-window-item>
+
       <v-window-item value="maintenance">
         <MaintenancePanel />
       </v-window-item>
@@ -72,6 +77,7 @@ import ImportTriggerPanel from '../components/settings/ImportTriggerPanel.vue'
 import ImportFiltersForm from '../components/settings/ImportFiltersForm.vue'
 import ImportTaskList from '../components/settings/ImportTaskList.vue'
 import MaintenancePanel from '../components/settings/MaintenancePanel.vue'
+import CleanupView from './CleanupView.vue'
 import { useMLStore } from '../stores/ml.js'
 
 const tab = ref('overview')