feat(action-items): add action_items to Meeting type

src/lib/api.ts

@@ -172,6 +172,10 @@ export interface Meeting {
   speakers: SpeakerInfo[];
   notes_markdown: string;
   summary: SummaryFile | null;
+  // Confirmed/edited action items (table-backed source of truth) — falls back
+  // to summary.action_items drafts until anything is saved. Manage via
+  // confirmActionItems (add/edit/delete).
+  action_items: ActionItem[];
   calendar_event_id: string | null;
   tags: string[];
   template_id: string | null;