Kasempiternal/axiom-v2 Skills

2D/3D game and spatial content development -- SpriteKit (2D games), SceneKit (3D legacy, deprecated iOS 26), RealityKit (modern 3D/AR/ECS), physics, ECS architecture, SpriteView/RealityView SwiftUI integration, and diagnostics

App Intents for Siri/Shortcuts, parameterized intents, discovery.

Apple documentation research, Xcode MCP (mcpbridge) setup/tools/reference, App Store Connect MCP, WWDC transcript extraction, sosumi.ai docs, bundled compiler diagnostics

BGTaskScheduler, background URL sessions, silent push, beginBackgroundTask, and BGContinuedProcessingTask patterns for iOS

Build failures, dependency conflicts, test crashes, simulator issues, environment diagnostics, build performance, TestFlight crash triage

Build settings reference — xcodebuild flags, build settings, SPM configuration, CocoaPods/Carthage commands, xcconfig syntax, scheme configuration

Camera capture with AVFoundation -- AVCaptureSession, SwiftUI preview, RotationCoordinator (iOS 17+), responsive capture (zero-shutter-lag, deferred processing), session interruptions, camera switching, video recording, and diagnostics

CloudKit sync, CKSyncEngine, iCloud Drive, NSFileCoordinator, conflict resolution, CKRecord, CKShare, subscriptions, NSUbiquitousKeyValueStore, offline-first patterns

Swift 6 concurrency, async/await, @MainActor, actors, Sendable, @concurrent, assumeIsolated, Mutex, Atomic, ownership modifiers, progressive concurrency adoption

Instruments profiling for async/await, actor contention analysis, thread pool exhaustion detection, Swift Concurrency template workflows, priority inversion diagnosis

Core Data stack setup, NSPersistentContainer, NSManagedObjectContext, thread-confinement, CloudKit integration, migration, diagnostics, SwiftData bridging

Core Location authorization, monitoring, geofencing, background location, geocoding, and Core Spotlight indexing patterns for iOS

On-device ML with CoreML -- model conversion (PyTorch to CoreML), compression (palettization/quantization/pruning), stateful KV-cache for LLMs, multi-function models, MLTensor, async prediction, and diagnostics

Apple Human Interface Guidelines and SF Symbols -- design decisions, rendering modes, symbol effects/animations, Draw animations (iOS 26), accessibility compliance, and defending HIG decisions in design reviews

Design API reference -- HIG color/background/material system, typography (San Francisco, text styles, Dynamic Type, tracking, leading), SF Symbols complete API (rendering modes, effects, UIKit equivalents, platform matrix), Liquid Glass adoption guide (controls, navigation, windows, icons, migration), accessibility compliance

Use when app drains battery, device gets hot, users report energy issues, or auditing power consumption - Power Profiler diagnosis, subsystem identification (CPU/GPU/Network/Location/Display), background execution patterns

Energy optimization API reference - timer/network/location/background/display APIs, Power Profiler recording, iOS 26 BGContinuedProcessingTask, MetricKit energy monitoring, push notification setup