feat(modal): post title is the primary click (artist-scoped) + suggestion rows look like buttons

Two operator-asked modal UX changes (Scribe plan #514):

1. **Post title click → artist-scoped posts feed**
   - The bold post title in ProvenancePanel is now the primary click
     target. Click navigates to /posts?post_id=N&artist_id=A; the
     PostsView already filters on `artist_id`, so the user lands in
     that creator's stream, not the global one.
   - The redundant "View post" link is removed. "Show description"
     stays as the only action link below the meta line.
   - Title is styled as a button-link: accent color, hover underline,
     focus ring for keyboard nav (family rule 24 — UI quality bar).

2. **Suggestion rows look like buttons**
   - SuggestionItem becomes a chip-card: visible border, hover/focus
     background, unified container for name + score + actions
     (operator's "nothing visual to unify the buttons to their object"
     complaint).
   - Accept is an explicit tonal pill button labeled "Accept"
     (operator's pick over whole-row-clickable). 3-dot menu retains
     alias/dismiss, now `variant="outlined"` so it reads as a button.
   - Score is a fixed-width monospace pill on the right.
   - "+ new" badge upgraded to a pill chip with accent border so
     it's visibly an annotation, not part of the tag name.

frontend/src/components/modal/ProvenancePanel.vue

@@ -18,9 +18,13 @@
           <span class="fc-prov__platform">{{ e.source.platform }}</span>
           <span v-if="postDate(e)" class="fc-prov__date">{{ postDate(e) }}</span>
         </div>
-        <div class="fc-prov__post">
+        <button
+          type="button" class="fc-prov__post"
+          :title="`Open ${postTitle(e)} in the posts feed for ${e.artist.name}`"
+          @click="openPost(e.post.id, e.artist.id)"
+        >
           {{ postTitle(e) }}
-        </div>
+        </button>
         <div class="fc-prov__meta">
           <RouterLink :to="`/artist/${e.artist.slug}`">
             by {{ e.artist.name }}
@@ -29,12 +33,8 @@
             · {{ e.post.attachment_count }} files
           </span>
         </div>
-        <div class="fc-prov__actions">
-          <a href="#" @click.prevent="openPost(e.post.id)">
-            View post
-          </a>
+        <div v-if="e.post.description_html" class="fc-prov__actions">
           <a
-            v-if="e.post.description_html"
             href="#" @click.prevent="toggleDesc(e.provenance_id)"
           >{{ expanded[e.provenance_id] ? 'Hide description ▴' : 'Show description ▾' }}</a>
         </div>
@@ -137,10 +137,16 @@ function postTitle(e) {
   return toPlainText(e.post.title) || `Post ${e.post.external_post_id}`
 }
 
-function openPost(postId) {
+function openPost(postId, artistId) {
   // Land on the post in the posts feed (in context), not the gallery
-  // image grid. Operator-flagged 2026-05-28.
-  router.push({ path: '/posts', query: { post_id: postId } })
+  // image grid. Scope the feed to this artist so the user lands in
+  // that creator's stream, not the global one — operator-flagged
+  // 2026-06-01. PostsView reads `artist_id` from the query string
+  // (PostsView.vue line ~92) and filters via post_feed_service.
+  router.push({
+    path: '/posts',
+    query: { post_id: postId, artist_id: artistId },
+  })
   modal.close()
 }
 </script>
@@ -163,8 +169,21 @@ function openPost(postId) {
   text-transform: lowercase;
 }
 .fc-prov__post {
-  font-weight: 700; margin: 4px 0;
-  color: rgb(var(--v-theme-on-surface));
+  /* Clickable title — opens the post in the artist-scoped feed
+     (operator-flagged 2026-06-01: title IS the primary action, the
+     prior "View post" link was redundant). Styled as a button-link:
+     accent color, underline on hover, focus ring for keyboard nav. */
+  display: block; width: 100%; text-align: left;
+  background: none; border: none; padding: 0;
+  font: inherit; font-weight: 700;
+  margin: 4px 0;
+  color: rgb(var(--v-theme-accent));
+  cursor: pointer;
+}
+.fc-prov__post:hover { text-decoration: underline; }
+.fc-prov__post:focus-visible {
+  outline: 2px solid rgb(var(--v-theme-accent));
+  outline-offset: 2px; border-radius: 3px;
 }
 .fc-prov__meta {
   font-size: 13px; color: rgb(var(--v-theme-on-surface-variant));