feat(analytics): add custom event tracking to Photos app

Add PhotosEvents helper (8 events) and integrate tracking into:
- Photos store: favorite toggle, delete, filters applied
- Albums store: create, delete, add/remove photos
- Upload page: photo uploaded

Updates ManaScore analytics from 3/5 to 4/5 (customEvents: true).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/manacore/apps/landing/src/content/manascore/2026-03-19-photos.md

@@ -17,7 +17,7 @@ scores:
   ux: 55
 analytics:
   pageViewTracking: true
-  customEvents: false
+  customEvents: true
   authTracking: true
   landingTracking: false
   publicDashboard: true

apps/photos/apps/web/src/lib/stores/albums.svelte.ts

@@ -3,6 +3,7 @@
  */
 
 import { api } from '$lib/api/client';
+import { PhotosEvents } from '@manacore/shared-utils/analytics';
 import type { Album, Photo } from '@photos/shared';
 
 // State
@@ -92,6 +93,7 @@ export const albumStore = {
 			}
 			if (result.data) {
 				albums = [...albums, result.data];
+				PhotosEvents.albumCreated();
 				return result.data;
 			}
 			return null;
@@ -138,6 +140,7 @@ export const albumStore = {
 				return false;
 			}
 			albums = albums.filter((a) => a.id !== id);
+			PhotosEvents.albumDeleted();
 			if (currentAlbum?.id === id) {
 				currentAlbum = null;
 				albumPhotos = [];
@@ -159,6 +162,7 @@ export const albumStore = {
 				error = result.error.message;
 				return false;
 			}
+			PhotosEvents.photosAddedToAlbum(mediaIds.length);
 			// Reload album to get updated items
 			if (currentAlbum?.id === albumId) {
 				await this.loadAlbum(albumId);
@@ -181,6 +185,7 @@ export const albumStore = {
 				return false;
 			}
 			albumPhotos = albumPhotos.filter((p) => p.id !== mediaId);
+			PhotosEvents.photoRemovedFromAlbum();
 			return true;
 		} catch (e) {
 			error = e instanceof Error ? e.message : 'Failed to remove photo from album';

apps/photos/apps/web/src/lib/stores/photos.svelte.ts

@@ -3,6 +3,7 @@
  */
 
 import { api } from '$lib/api/client';
+import { PhotosEvents } from '@manacore/shared-utils/analytics';
 import type { Photo, PhotoFilters, PhotoStats } from '@photos/shared';
 
 // State
@@ -104,6 +105,7 @@ export const photoStore = {
 	 */
 	async setFilters(newFilters: Partial<PhotoFilters>) {
 		filters = { ...filters, ...newFilters, offset: 0 };
+		PhotosEvents.filtersApplied();
 		await this.loadPhotos(true);
 	},
 
@@ -135,6 +137,7 @@ export const photoStore = {
 		try {
 			const result = await api.post<{ isFavorited: boolean }>(`/favorites/${mediaId}/toggle`);
 			if (result.data) {
+				PhotosEvents.photoFavorited(result.data.isFavorited);
 				// Update photo in list
 				photos = photos.map((p) =>
 					p.id === mediaId ? { ...p, isFavorited: result.data!.isFavorited } : p
@@ -160,6 +163,7 @@ export const photoStore = {
 				return false;
 			}
 			photos = photos.filter((p) => p.id !== mediaId);
+			PhotosEvents.photoDeleted();
 			if (selectedPhoto?.id === mediaId) {
 				selectedPhoto = null;
 			}

apps/photos/apps/web/src/routes/(app)/upload/+page.svelte

@@ -2,6 +2,7 @@
 	import { _ } from 'svelte-i18n';
 	import { goto } from '$app/navigation';
 	import { uploadWithAuth } from '$lib/api/client';
+	import { PhotosEvents } from '@manacore/shared-utils/analytics';
 	import UploadDropzone from '$lib/components/upload/UploadDropzone.svelte';
 
 	interface UploadFile {
@@ -52,6 +53,7 @@
 
 				files[i].status = 'success';
 				files[i].progress = 100;
+				PhotosEvents.photoUploaded();
 			} catch (e) {
 				files[i].status = 'error';
 				files[i].error = e instanceof Error ? e.message : 'Upload failed';

packages/shared-utils/src/analytics.ts

@@ -275,6 +275,20 @@ export const ManaCoreEvents = {
 	profileUpdated: () => trackEvent('profile_updated'),
 };
 
+/**
+ * Photos App Events
+ */
+export const PhotosEvents = {
+	photoUploaded: () => trackEvent('photo_uploaded'),
+	photoFavorited: (favorited: boolean) => trackEvent('photo_favorited', { favorited }),
+	photoDeleted: () => trackEvent('photo_deleted'),
+	albumCreated: () => trackEvent('album_created'),
+	albumDeleted: () => trackEvent('album_deleted'),
+	photosAddedToAlbum: (count: number) => trackEvent('photos_added_to_album', { count }),
+	photoRemovedFromAlbum: () => trackEvent('photo_removed_from_album'),
+	filtersApplied: () => trackEvent('filters_applied'),
+};
+
 /**
  * Storage App Events
  */