Add push notification deep linking and sharing subscription checks

- Add deep link navigation from push notifications to specific task column on kanban board
- Fix subscription check in push notification handler to allow navigation when limitations disabled
- Add pendingNavigationTaskId to handle notifications when app isn't ready
- Add ScrollViewReader to AllTasksView for programmatic scrolling to task column
- Add canShareResidence() and canShareContractor() subscription checks (iOS & Android)
- Add test APNS file for simulator push notification testing

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

iosApp/test_push.apns

@@ -0,0 +1,16 @@
+{
+  "Simulator Target Bundle": "com.tt.casera.CaseraDev",
+  "aps": {
+    "alert": {
+      "title": "Task Reminder",
+      "subtitle": "123 Main Street",
+      "body": "Change HVAC filter is due today"
+    },
+    "badge": 1,
+    "sound": "default",
+    "category": "TASK_REMINDER"
+  },
+  "task_id": "54",
+  "type": "task_due_soon",
+  "notification_id": "123"
+}