feat(admin): modernize tenant admin PWA with cockpit layout and slate theme

- Replaced rainbow grid with phase-aware cockpit layout
- Implemented smart lifecycle hero with readiness logic
- Introduced dark command bar header with context pill and search placeholder
- Updated global Tamagui theme to slate/indigo palette
- Refined bottom navigation with minimalist spotlight style

.beads/issues.jsonl

@@ -1,4 +1,3 @@
-{"id":"--stealth-d39","title":"Superadmin control surface spec and access matrix","description":"Define the minimal superadmin control surface, permissions, and mapping to tenant/guest responsibilities. Document scope and non-goals.","status":"tombstone","priority":2,"issue_type":"task","created_at":"2026-01-01T14:16:06.994379577+01:00","updated_at":"2026-01-01T17:23:28.230936323+01:00","close_reason":"Duplicate of fotospiel-app-ihd after beads re-init","deleted_at":"2026-01-01T17:23:28.230936323+01:00","deleted_by":"soeren","delete_reason":"Remove stray stealth issue id","original_type":"task"}
 {"id":"fotospiel-app-097","title":"Tenant announcements / release notes","description":"Broadcast announcements to tenants/admins with targeting and scheduling.","status":"closed","priority":3,"issue_type":"feature","created_at":"2026-01-01T14:20:21.68206312+01:00","updated_at":"2026-01-02T14:18:31.676816348+01:00","closed_at":"2026-01-02T14:18:31.676816348+01:00","close_reason":"Closed"}
 {"id":"fotospiel-app-0h0","title":"SEC-BILL-02 Signature freshness + retry policies for Paddle webhooks","status":"open","priority":2,"issue_type":"task","created_at":"2026-01-01T15:53:37.618780852+01:00","created_by":"soeren","updated_at":"2026-01-01T15:53:37.618780852+01:00"}
 {"id":"fotospiel-app-0rb","title":"Tenant admin onboarding: inline checkout integration in welcome flow","status":"closed","priority":2,"issue_type":"task","created_at":"2026-01-01T16:08:22.434997456+01:00","created_by":"soeren","updated_at":"2026-01-01T16:08:28.026795975+01:00","closed_at":"2026-01-01T16:08:28.026795975+01:00","close_reason":"Completed in codebase (verified)"}
@@ -48,6 +47,7 @@
 {"id":"fotospiel-app-7uu","title":"Uploader: improve file readiness detection","description":"Part of epic fotospiel-app-5aa. Use size + last-write stabilization to avoid partial uploads.","status":"open","priority":2,"issue_type":"task","owner":"codex-agent@example.com","created_at":"2026-01-13T11:01:54.142231578+01:00","created_by":"Codex Agent","updated_at":"2026-01-13T11:01:54.142231578+01:00"}
 {"id":"fotospiel-app-7x1","title":"Uploader: response format manual override","description":"Part of epic fotospiel-app-5aa. Allow manual response format override when connect code doesn't set it.","status":"open","priority":2,"issue_type":"task","owner":"codex-agent@example.com","created_at":"2026-01-13T11:03:54.824613016+01:00","created_by":"Codex Agent","updated_at":"2026-01-13T11:03:54.824613016+01:00"}
 {"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-8iw","title":"Modernize Tenant Admin PWA UI","status":"open","priority":1,"issue_type":"task","owner":"codex-agent@example.com","created_at":"2026-01-17T14:36:39.802617182+01:00","created_by":"Codex Agent","updated_at":"2026-01-17T14:36:39.802617182+01:00"}
 {"id":"fotospiel-app-8ui","title":"Uploader: persist queue across restarts","description":"Part of epic fotospiel-app-5aa. Persist pending upload queue to disk (settings or local DB) so restarts don't lose files.","status":"open","priority":2,"issue_type":"task","owner":"codex-agent@example.com","created_at":"2026-01-13T11:01:42.213478619+01:00","created_by":"Codex Agent","updated_at":"2026-01-13T11:01:42.213478619+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)"}