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/SuggestionItem.vue

@@ -1,19 +1,33 @@
 <template>
+  <!-- Chip-card row: visible border + hover/focus state unifies the
+       name, score, and action buttons as one "object" (operator-asked
+       2026-06-01). The row itself is informational; the explicit
+       Accept button + 3-dot menu are the action affordances. -->
   <div class="fc-suggestion">
     <span class="fc-suggestion__name">
       {{ suggestion.display_name }}
       <span v-if="suggestion.creates_new_tag" class="fc-suggestion__new"
-        title="No matching tag yet — accepting creates it">＋new</span>
+        title="No matching tag yet — accepting creates it">+ new</span>
     </span>
     <span class="fc-suggestion__score">{{ scorePct }}</span>
     <v-btn
-      icon="mdi-plus" size="x-small" variant="text" color="accent"
+      class="fc-suggestion__accept"
+      size="small" variant="tonal" color="accent"
+      density="compact" rounded="pill"
       :aria-label="`Accept ${suggestion.display_name}`"
       @click="$emit('accept', suggestion)"
-    />
+    >
+      Accept
+    </v-btn>
     <v-menu>
       <template #activator="{ props }">
-        <v-btn icon="mdi-dots-vertical" size="x-small" variant="text" v-bind="props" />
+        <v-btn
+          class="fc-suggestion__menu"
+          icon="mdi-dots-vertical" size="small"
+          variant="outlined" density="compact"
+          :aria-label="`More actions for ${suggestion.display_name}`"
+          v-bind="props"
+        />
       </template>
       <v-list density="compact">
         <v-list-item @click="$emit('alias', suggestion)">
@@ -38,17 +52,45 @@ const scorePct = computed(() => `${Math.round(props.suggestion.score * 100)}%`)
 
 <style scoped>
 .fc-suggestion {
-  display: flex; align-items: center; gap: 6px;
-  padding: 2px 0;
+  display: flex; align-items: center; gap: 8px;
+  padding: 6px 10px; margin-bottom: 4px;
+  background: rgb(var(--v-theme-surface));
+  border: 1px solid rgb(var(--v-theme-surface-light));
+  border-radius: 6px;
+  transition: background 120ms ease, border-color 120ms ease;
+}
+.fc-suggestion:hover {
+  background: rgb(var(--v-theme-surface-light));
+  border-color: rgb(var(--v-theme-accent), 0.4);
+}
+.fc-suggestion__name {
+  flex: 1; min-width: 0;
+  font-size: 14px;
+  color: rgb(var(--v-theme-on-surface));
+  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
 }
-.fc-suggestion__name { flex: 1; min-width: 0; }
 .fc-suggestion__new {
-  font-size: 10px; color: rgb(var(--v-theme-accent));
-  margin-left: 4px;
+  display: inline-block;
+  font-size: 10px; font-weight: 600;
+  color: rgb(var(--v-theme-accent));
+  background: rgba(var(--v-theme-accent), 0.12);
+  border: 1px solid rgb(var(--v-theme-accent), 0.4);
+  padding: 1px 6px; border-radius: 999px;
+  margin-left: 6px;
+  text-transform: uppercase; letter-spacing: 0.04em;
 }
 .fc-suggestion__score {
+  flex: 0 0 auto; min-width: 38px; text-align: right;
   font-size: 11px;
   color: rgb(var(--v-theme-on-surface-variant, var(--v-theme-on-surface)));
   font-family: 'JetBrains Mono', monospace;
 }
+/* Vuetify's compact density doesn't shrink the tonal button enough
+   for a tight row; clamp the min-width so Accept stays compact. */
+.fc-suggestion__accept :deep(.v-btn__content) {
+  font-size: 12px; letter-spacing: 0.02em;
+}
+.fc-suggestion__menu {
+  flex: 0 0 auto;
+}
 </style>