axiom▌

You MUST use this skill for ANY GPU rendering, graphics programming, 3D content display, or display performance work.

Purpose: Comprehensive CloudKit reference for database-based iCloud storage and sync Availability: iOS 10.0+ (basic), iOS 17.0+ (CKSyncEngine), iOS 17.0+ (SwiftData integration) Context: Modern CloudKit sync via CKSyncEngine (WWDC 2023) or SwiftData integration

You MUST use this skill for ANY networking work including HTTP requests, WebSockets, TCP connections, or network debugging.

Wait for conditions, not arbitrary timeouts. Core principle Flaky tests come from guessing how long operations take. Condition-based waiting eliminates race conditions.

Comprehensive guide to writing reliable, maintainable UI tests with XCUITest.

Use when:

Purpose: Guide robust, testable in-app purchase implementation StoreKit Version: StoreKit 2 iOS Version: iOS 15+ (iOS 18.4+ for latest features) Xcode: Xcode 13+ (Xcode 16+ recommended) Context: WWDC 2025-241, 2025-249, 2023-10013, 2021-10114

You MUST use this skill for ANY data persistence, database, axiom-storage, CloudKit, or serialization work.

You MUST use this skill for ANY build, environment, or Xcode-related issue before debugging application code.

SwiftUI's navigation APIs provide data-driven, programmatic navigation that scales from simple stacks to complex multi-column layouts. Introduced in iOS 16 (2022) with NavigationStack and NavigationSplitView, evolved in iOS 18 (2024) with Tab/Sidebar unification, and refined in iOS 26 (2025) with Liquid Glass design.