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>

composeApp/src/commonMain/kotlin/com/example/casera/utils/SubscriptionHelper.kt

@@ -267,6 +267,50 @@ object SubscriptionHelper {
         return UsageCheck(true, null)
     }
 
+    // ===== RESIDENCE SHARING =====
+
+    /**
+     * Check if user can share a residence (Pro feature).
+     * Returns true (blocked) when limitations are ON and user is not pro.
+     */
+    fun canShareResidence(): UsageCheck {
+        val subscription = SubscriptionCache.currentSubscription.value
+            ?: return UsageCheck(true, null)  // Allow if no subscription data (fallback)
+
+        if (!subscription.limitationsEnabled) {
+            return UsageCheck(true, null)  // Limitations disabled, allow everything
+        }
+
+        if (currentTier == "pro") {
+            return UsageCheck(true, null)  // Pro tier can share
+        }
+
+        // Free users cannot share residences
+        return UsageCheck(false, "share_residence")
+    }
+
+    // ===== CONTRACTOR SHARING =====
+
+    /**
+     * Check if user can share a contractor (Pro feature).
+     * Returns true (blocked) when limitations are ON and user is not pro.
+     */
+    fun canShareContractor(): UsageCheck {
+        val subscription = SubscriptionCache.currentSubscription.value
+            ?: return UsageCheck(true, null)  // Allow if no subscription data (fallback)
+
+        if (!subscription.limitationsEnabled) {
+            return UsageCheck(true, null)  // Limitations disabled, allow everything
+        }
+
+        if (currentTier == "pro") {
+            return UsageCheck(true, null)  // Pro tier can share
+        }
+
+        // Free users cannot share contractors
+        return UsageCheck(false, "share_contractor")
+    }
+
     // ===== DEPRECATED - Keep for backwards compatibility =====
 
     @Deprecated("Use isContractorsBlocked() instead", ReplaceWith("isContractorsBlocked()"))