feat(fc3c): /subscriptions Check Now button — wires SourceRow → store.checkNow

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

frontend/src/views/SubscriptionsView.vue

@@ -30,11 +30,13 @@
         v-for="g in groups" :key="g.artist.id"
         :artist="g.artist" :sources="g.sources"
         :open="isOpen(g.artist.id)"
+        :checking-ids="store.checkingIds"
         @toggle="toggleSection(g.artist.id)"
         @edit="openEditSource"
         @remove="removeSource"
         @toggle-source="toggleSourceEnabled"
         @add-source="openAddSource"
+        @check="onCheck"
       />
     </div>
 
@@ -50,7 +52,7 @@
 
 <script setup>
 import { computed, onMounted, ref, watch } from 'vue'
-import { useRoute } from 'vue-router'
+import { useRoute, useRouter } from 'vue-router'
 import { useSourcesStore } from '../stores/sources.js'
 import { usePlatformsStore } from '../stores/platforms.js'
 import ArtistSection from '../components/subscriptions/ArtistSection.vue'
@@ -58,6 +60,7 @@ import SourceFormDialog from '../components/subscriptions/SourceFormDialog.vue'
 import ArtistCreateDialog from '../components/subscriptions/ArtistCreateDialog.vue'
 
 const route = useRoute()
+const router = useRouter()
 const store = useSourcesStore()
 const platformsStore = usePlatformsStore()
 
@@ -132,6 +135,29 @@ function onArtistCreated(artist) {
   // Move into Add Source for the new artist immediately.
   openAddSource(artist)
 }
+
+async function onCheck(source) {
+  try {
+    const body = await store.checkNow(source.id)
+    globalThis.window?.__fcToast?.({
+      text: `Check enqueued (event #${body.download_event_id})`,
+      type: 'success',
+    })
+  } catch (e) {
+    if (e?.body?.download_event_id) {
+      globalThis.window?.__fcToast?.({
+        text: 'Already running — see Downloads',
+        type: 'info',
+      })
+      router.push({ path: '/downloads', query: { source_id: source.id } })
+    } else {
+      globalThis.window?.__fcToast?.({
+        text: `Check failed: ${e?.detail || e?.message || e}`,
+        type: 'error',
+      })
+    }
+  }
+}
 </script>
 
 <style scoped>