axiom▌

Stacks, grids, outlines, and scroll enhancements. iOS 14 through iOS 26.

CAAnimation issues manifest as missing completion handlers, wrong timing, or jank under specific conditions. Core principle 90% of CAAnimation problems are CATransaction timing, layer state, or frame rate assumptions, not Core Animation bugs.

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.

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

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

Use when:

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

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