feat(server): add websocket events for activity changes

- Add 'activity.change' event to event repository
- Emit event when new activity (reaction/comment) is created
- Add notification handler to broadcast activity changes to relevant users
- Update frontend websocket types to include on_activity_change event
- Update tests to mock album repository calls

server/src/repositories/event.repository.ts

@@ -47,6 +47,9 @@ type EventMap = {
   ];
   'config.validate': [{ newConfig: SystemConfig; oldConfig: SystemConfig }];
 
+  // activity events
+  'activity.change': [{ recipientId: string[]; userId: string; albumId: string; assetId: string | null }];
+
   // album events
   'album.update': [
     { id: string; recipientId: string[]; assetId: string[]; userId: string; status: 'added' | 'removed' },
@@ -54,6 +57,7 @@ type EventMap = {
   'album.invite': [{ id: string; userId: string }];
 
   // asset events
+  'asset.update': [{ assetIds: string[]; userId: string }];
   'asset.person': [
     { assetId: string; userId: string; personId: string | undefined; status: 'created' | 'removed' | 'removed_soft' },
   ];
@@ -102,11 +106,12 @@ export type ArgsOf<T extends EmitEvent> = EventMap[T];
 export interface ClientEventMap {
   on_upload_success: [AssetResponseDto];
   on_user_delete: [string];
+  on_activity_change: [{ albumId: string; assetId: string | null }];
   on_album_update: [{ albumId: string; assetId: string[]; status: 'added' | 'removed' }];
   on_asset_person: [{ assetId: string; personId: string | undefined; status: 'created' | 'removed' | 'removed_soft' }];
   on_asset_delete: [string];
   on_asset_trash: [string[]];
-  on_asset_update: [AssetResponseDto];
+  on_asset_update: [string[]];
   on_asset_hidden: [string];
   on_asset_restore: [string[]];
   on_asset_stack_update: string[];