Add Today action lists and clickable KPI links (Phase 3).

Show upcoming appointments for the rest of today and link each KPI card to its relevant dashboard tab.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/types/today.ts

@@ -1,3 +1,15 @@
+export type TodayUpcomingAppointment = {
+  id: string;
+  patientName: string;
+  startAt: string;
+  endAt: string;
+  purpose: string;
+};
+
+export type TodaySummaryActions = {
+  upcomingAppointmentsToday?: TodayUpcomingAppointment[];
+};
+
 export type TodayChartBucket = {
   code: string;
   label: string;
@@ -36,6 +48,7 @@ export interface TodaySummaryData {
   range: { from: string; to: string };
   widgets: TodaySummaryWidgets;
   charts: TodaySummaryCharts;
+  actions: TodaySummaryActions;
 }
 
 export interface TodaySummaryResponse {