CharlesWiltgen

Use when researching Apple frameworks, APIs, or WWDC sessions - provides techniques for retrieving full transcripts, code samples, and…

Use when ANY question involves Apple framework APIs, Swift compiler errors, or Xcode-bundled documentation.

Reference — Comprehensive Apple Human Interface Guidelines covering colors (semantic, custom, patterns), backgrounds (material hierarchy…

Use when making design decisions, reviewing UI for HIG compliance, choosing colors/backgrounds/typography, or defending design choices…

Use when implementing, testing, or evaluating ANY Apple Intelligence, on-device AI, or speech-to-text feature.

Use when needing synchronous actor access in tests, legacy delegate callbacks, or performance-critical code.

Use when encountering "Unable to simultaneously satisfy constraints" errors, constraint conflicts, ambiguous layout warnings, or views…

Reference — AVFoundation audio APIs, AVAudioSession categories/modes, AVAudioEngine pipelines, bit-perfect DAC output, iOS 26+ spatial…

Use when automating iOS Simulator UI interactions beyond simctl capabilities.

Use when asking how to use Axiom or what skills exist, capturing console with xclog, symbolicating .ips/MetricKit/.crash crashes with…

Use when implementing BGTaskScheduler, debugging background tasks that never run, understanding why tasks terminate early, or testing…

Symptom-based background task troubleshooting - decision trees for 'task never runs', 'task terminates early', 'works in dev not prod'…