feat(knowledge): show organization for person cards, category for place cards

Exposes birthday, organization, address (person) and website, category (place)
from entity_meta in the knowledge API response; updates KnowledgeView cards
to display organization and category as visible meta chips/text.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/views/KnowledgeView.vue

@@ -27,8 +27,12 @@ interface KnowledgeItem {
   relationship?: string;
   email?: string;
   phone?: string;
+  birthday?: string;
+  organization?: string;
   address?: string;
   hours?: string;
+  website?: string;
+  category?: string;
   item_count?: number;
   checked_count?: number;
   list_items?: { text: string; checked: boolean }[];
@@ -544,11 +548,13 @@ onUnmounted(() => {
               <!-- Person specifics -->
               <div v-if="item.note_type === 'person'" class="k-card-meta">
                 <span v-if="item.relationship" class="meta-chip">{{ item.relationship }}</span>
+                <span v-if="item.organization" class="meta-muted">{{ item.organization }}</span>
                 <span v-if="item.phone" class="meta-muted">{{ item.phone }}</span>
               </div>
 
               <!-- Place specifics -->
               <div v-else-if="item.note_type === 'place'" class="k-card-meta">
+                <span v-if="item.category" class="meta-chip">{{ item.category }}</span>
                 <span v-if="item.address" class="meta-muted">{{ item.address }}</span>
                 <span v-if="item.hours" class="meta-muted">{{ item.hours }}</span>
               </div>