feat: implement advanced analytics for mobile admin dashboard

This commit includes:
- Backend EventAnalyticsService and Controller
- API endpoint for event analytics
- Frontend EventAnalyticsPage with custom bar charts and top contributor lists
- Analytics shortcut on the dashboard
- Feature-lock upsell UI for non-premium users

.beads/issues.jsonl

@@ -40,6 +40,7 @@
 {"id":"fotospiel-app-6zc","title":"Live Show: Admin app settings \u0026 effect presets","status":"closed","priority":2,"issue_type":"feature","created_at":"2026-01-05T11:11:27.038815978+01:00","created_by":"soeren","updated_at":"2026-01-05T15:02:42.035082497+01:00","closed_at":"2026-01-05T15:02:42.035082497+01:00","close_reason":"Closed","dependencies":[{"issue_id":"fotospiel-app-6zc","depends_on_id":"fotospiel-app-vro","type":"blocks","created_at":"2026-01-05T11:12:50.048055484+01:00","created_by":"soeren"}]}
 {"id":"fotospiel-app-7bu","title":"Paddle migration: extend config/env handling for Paddle keys/webhook secrets","status":"closed","priority":2,"issue_type":"task","created_at":"2026-01-01T15:57:27.242854801+01:00","created_by":"soeren","updated_at":"2026-01-01T15:57:32.890355888+01:00","closed_at":"2026-01-01T15:57:32.890355888+01:00","close_reason":"Completed in codebase (verified)"}
 {"id":"fotospiel-app-7u1","title":"Paddle catalog sync: PaddlePackagePull job","status":"closed","priority":2,"issue_type":"task","created_at":"2026-01-01T16:00:47.468892178+01:00","created_by":"soeren","updated_at":"2026-01-01T16:00:53.126602817+01:00","closed_at":"2026-01-01T16:00:53.126602817+01:00","close_reason":"Completed in codebase (verified)"}
+{"id":"fotospiel-app-83q","title":"Implement Advanced Analytics","description":"Full plan: Phase 1 (MVP) includes Activity Timeline, Top Contributors, and Task Stats. Phase 2 includes Engagement Funnel, Vibe Check, and PDF Export. See chat history for details.","status":"closed","priority":2,"issue_type":"task","created_at":"2026-01-06T15:40:08.826105426+01:00","created_by":"soeren","updated_at":"2026-01-06T16:15:17.722450844+01:00","closed_at":"2026-01-06T16:15:17.722455019+01:00"}
 {"id":"fotospiel-app-95m","title":"Paddle migration: admin catalog sync UI for packages","status":"closed","priority":2,"issue_type":"task","created_at":"2026-01-01T15:57:49.790409261+01:00","created_by":"soeren","updated_at":"2026-01-01T15:57:55.418180246+01:00","closed_at":"2026-01-01T15:57:55.418180246+01:00","close_reason":"Completed in codebase (verified)"}
 {"id":"fotospiel-app-99d","title":"Paddle migration: marketing checkout uses Paddle-hosted checkout","status":"closed","priority":2,"issue_type":"task","created_at":"2026-01-01T15:58:12.298063897+01:00","created_by":"soeren","updated_at":"2026-01-01T15:58:17.968032021+01:00","closed_at":"2026-01-01T15:58:17.968032021+01:00","close_reason":"Completed in codebase (verified)"}
 {"id":"fotospiel-app-99o","title":"Fix German welcome phrasing with article-safe app_name","status":"closed","priority":2,"issue_type":"task","created_at":"2026-01-04T11:50:17.410390085+01:00","created_by":"soeren","updated_at":"2026-01-04T12:19:55.741616753+01:00","closed_at":"2026-01-04T12:19:55.741616753+01:00","close_reason":"Closed"}
@@ -139,6 +140,7 @@
 {"id":"fotospiel-app-xg5","title":"Live Show: Admin app moderation queue UI","acceptance_criteria":"- Dedicated Live Show moderation API endpoints exist for list + approve/reject/clear\\n- Admin mobile UI exposes Live Show queue with status filter and actions\\n- PhotoResource includes live_* fields for admin UI\\n- Feature tests cover list + approve/reject/clear workflows","notes":"Added dedicated Live Show moderation API (tenant admin): /events/{slug}/live-show/photos + approve/reject/clear actions. Added LiveShowPhotoController + FormRequests. PhotoResource now exposes live_* fields. Admin app: new Live Show queue page, route, and Event detail shortcut tile. Admin API updated with Live Show functions + types. Added translations (EN/DE) for Live Show queue UI. Tests: tests/Feature/LiveShowPhotoControllerTest.php.","status":"closed","priority":2,"issue_type":"feature","created_at":"2026-01-05T11:11:15.006484132+01:00","created_by":"soeren","updated_at":"2026-01-05T14:03:41.410176482+01:00","closed_at":"2026-01-05T14:03:41.410176482+01:00","close_reason":"Closed","dependencies":[{"issue_id":"fotospiel-app-xg5","depends_on_id":"fotospiel-app-t1k","type":"blocks","created_at":"2026-01-05T11:12:38.94145573+01:00","created_by":"soeren"}]}
 {"id":"fotospiel-app-xht","title":"Paddle migration: tenant ↔ Paddle customer sync + webhook handlers","status":"closed","priority":2,"issue_type":"task","created_at":"2026-01-01T15:58:01.028435913+01:00","created_by":"soeren","updated_at":"2026-01-01T15:58:06.685122343+01:00","closed_at":"2026-01-01T15:58:06.685122343+01:00","close_reason":"Completed in codebase (verified)"}
 {"id":"fotospiel-app-y1f","title":"Compliance tools: superadmin data export + retention override UI","description":"Add superadmin compliance tools for data exports and retention overrides.\nScope: list export requests, status, expiry, and allow manual retry/cancel; add per-tenant/event retention override UI with audit logging.\nEnsure access is restricted to superadmins and no PII is exposed beyond existing export metadata.\n","status":"closed","priority":2,"issue_type":"task","created_at":"2026-01-02T17:34:29.825347299+01:00","created_by":"soeren","updated_at":"2026-01-02T22:49:53.586758621+01:00","closed_at":"2026-01-02T22:49:53.586758621+01:00","close_reason":"Closed"}
+{"id":"fotospiel-app-yii","title":"Implement 'Upgrade to Premium' flow for Analytics Upsell","description":"The Analytics page currently has an upsell screen for non-premium users. The 'Upgrade to Premium' button redirects to the billing page, but the actual upgrade/purchase flow needs to be fully implemented and verified to allow users to unlock the feature.","status":"open","priority":2,"issue_type":"task","created_at":"2026-01-06T16:13:55.446495378+01:00","created_by":"soeren","updated_at":"2026-01-06T16:13:55.446495378+01:00"}
 {"id":"fotospiel-app-z2k","title":"Ops health widget visual polish","description":"Replace Tailwind utility styling in ops health widget with Filament components and icon-driven layout.","notes":"Updated queue health widget layout to use Filament cards, badges, empty states, and grid utilities; added status strip and alert rail.","status":"closed","priority":3,"issue_type":"task","created_at":"2026-01-01T21:34:39.851728527+01:00","created_by":"soeren","updated_at":"2026-01-01T21:34:59.834597413+01:00","closed_at":"2026-01-01T21:34:59.834597413+01:00","close_reason":"completed"}
 {"id":"fotospiel-app-z5g","title":"Tenant admin onboarding: PWA/Capacitor/TWA packaging prep","status":"open","priority":2,"issue_type":"task","created_at":"2026-01-01T16:08:46.126417696+01:00","created_by":"soeren","updated_at":"2026-01-01T16:08:46.126417696+01:00"}
 {"id":"fotospiel-app-zli","title":"SEC-FE-01 CSP nonce/hashing rollout","status":"closed","priority":2,"issue_type":"task","created_at":"2026-01-01T15:55:03.625388684+01:00","created_by":"soeren","updated_at":"2026-01-01T15:55:09.286391766+01:00","closed_at":"2026-01-01T15:55:09.286391766+01:00","close_reason":"Completed in codebase (verified)"}