chore(types): regenerate OpenAPI types for ActivityFeedItemDTO rollup fields

Adds count (required) and happenedAtUntil (optional) to the TypeScript DTO so
Chronik + DashboardActivityFeed can consume rollup rows type-safely.

Part of #285.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend/src/lib/generated/api.ts

@@ -1799,6 +1799,7 @@ export interface components {
             /** Format: uuid */
             id?: string;
             displayName?: string;
+            personType?: string;
             firstName?: string;
             lastName?: string;
             /** Format: int64 */
@@ -1809,7 +1810,6 @@ export interface components {
             deathYear?: number;
             alias?: string;
             notes?: string;
-            personType?: string;
         };
         SenderModel: {
             /** Format: uuid */
@@ -1877,10 +1877,10 @@ export interface components {
             timeout?: number;
         };
         PageNotificationDTO: {
-            /** Format: int32 */
-            totalPages?: number;
             /** Format: int64 */
             totalElements?: number;
+            /** Format: int32 */
+            totalPages?: number;
             pageable?: components["schemas"]["PageableObject"];
             first?: boolean;
             last?: boolean;
@@ -2015,6 +2015,10 @@ export interface components {
             /** Format: date-time */
             happenedAt: string;
             youMentioned: boolean;
+            /** Format: int32 */
+            count: number;
+            /** Format: date-time */
+            happenedAtUntil?: string;
         };
         InvitePrefillDTO: {
             firstName: string;
@@ -4455,7 +4459,3 @@ export interface operations {
         };
     };
 }
-
-export type DashboardResumeDTO = components['schemas']['DashboardResumeDTO'];
-export type DashboardPulseDTO = components['schemas']['DashboardPulseDTO'];
-export type ActivityFeedItemDTO = components['schemas']['ActivityFeedItemDTO'];