feat(fc3a): ArtistView — populate Subscription/Sources chips + manage link

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

frontend/src/views/ArtistView.vue

@@ -23,10 +23,21 @@
 
       <div class="fc-artist__fc4">
         <v-chip
-          v-for="b in ['Subscription', 'Sources', 'Credential health']"
-          :key="b" disabled size="small" variant="outlined"
+          size="small"
+          :variant="store.overview.is_subscription ? 'flat' : 'outlined'"
+          :color="store.overview.is_subscription ? 'accent' : undefined"
+          prepend-icon="mdi-rss"
+        >{{ store.overview.is_subscription ? 'Subscription' : 'One-off' }}</v-chip>
+
+        <v-chip
+          size="small" variant="outlined" prepend-icon="mdi-link-variant"
+          :to="`/subscriptions?artist_id=${store.overview.id}`"
+        >{{ store.overview.sources.length }} source{{ store.overview.sources.length === 1 ? '' : 's' }}</v-chip>
+
+        <v-chip
+          size="small" variant="outlined" disabled
           prepend-icon="mdi-clock-outline"
-        >{{ b }} · Coming in FC-4</v-chip>
+        >Credential health · FC-3b</v-chip>
       </div>
 
       <section v-if="store.overview.cooccurring_tags.length" class="fc-artist__sec">
@@ -49,7 +60,13 @@
       </section>
 
       <section v-if="store.overview.sources.length" class="fc-artist__sec">
-        <h2 class="fc-h2">Sources</h2>
+        <div class="fc-artist__sec-head">
+          <h2 class="fc-h2">Sources</h2>
+          <RouterLink
+            :to="`/subscriptions?artist_id=${store.overview.id}`"
+            class="fc-artist__manage"
+          >Manage subscriptions →</RouterLink>
+        </div>
         <v-table density="compact">
           <thead>
             <tr><th>Platform</th><th>URL</th><th class="text-right">Images</th></tr>
@@ -80,7 +97,7 @@
 
 <script setup>
 import { computed, watch } from 'vue'
-import { useRoute, useRouter } from 'vue-router'
+import { useRoute, useRouter, RouterLink } from 'vue-router'
 import { useArtistStore } from '../stores/artist.js'
 import MasonryGrid from '../components/discovery/MasonryGrid.vue'
 
@@ -143,4 +160,14 @@ function openTag(tagId) {
   max-width: 380px; overflow: hidden; text-overflow: ellipsis;
   white-space: nowrap;
 }
+.fc-artist__sec-head {
+  display: flex; align-items: baseline; justify-content: space-between;
+  margin-bottom: 0.25rem;
+}
+.fc-artist__manage {
+  font-size: 0.85rem;
+  color: rgb(var(--v-theme-accent));
+  text-decoration: none;
+}
+.fc-artist__manage:hover { text-decoration: underline; }
 </style>