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Diagnostic Skills

Systematic diagnostics for production issues with mandatory workflows and pressure scenario defense.

Diagnostic Skills

SkillDescription
accessibility-diagVoiceOver, Dynamic Type, color contrast, touch targets — WCAG compliance with App Store rejection defense
app-store-diagApp Store rejections, metadata issues, review guidelines — submission failure diagnostics
background-processing-diagBackground tasks not executing, BGTaskScheduler debugging, scheduling factors — background processing diagnostics
camera-capture-diagCamera freezes, preview rotation, capture failures — AVCaptureSession diagnostics
cloud-sync-diagCloudKit errors, iCloud Drive sync failures, quota exceeded — systematic cloud sync diagnostics with production crisis defense
code-signing-diagCertificate not found, provisioning profile mismatch, errSecInternalComponent, ITMS upload errors — code signing diagnostics
core-data-diagSchema migrations, thread-confinement, N+1 queries — Core Data diagnostics with production crisis defense
core-location-diagLocation updates not arriving, background location broken, authorization denied, geofence not triggering — Core Location diagnostics
coreml-diagModel loading failures, prediction errors, conversion issues — CoreML diagnostics
energy-diagBattery drain, device hot, background drain, cellular usage — symptom-based decision trees with time-cost analysis
foundation-models-diagContext exceeded, guardrail violations, slow generation — Foundation Models diagnostics with production crisis defense
mapkit-diagAnnotations not appearing, search failures, directions errors — MapKit diagnostics
metal-migration-diagShader compilation failures, rendering artifacts, performance issues — Metal migration diagnostics
networking-diagConnection timeouts, TLS failures, data arrival issues — Network.framework diagnostics with production crisis defense
push-notifications-diagNotifications not arriving, token registration failed, works in dev not production, silent push throttled, rich media missing — push notification diagnostics with delivery log analysis
realitykit-diagEntity loading failures, physics issues, rendering problems — RealityKit diagnostics
spritekit-diagPhysics contacts not firing, frame drops, tunneling, coordinate confusion — SpriteKit diagnostics
storage-diagFiles disappeared, backup too large, file access errors — systematic local storage diagnostics with production crisis defense
swiftdata-migration-diagSwiftData migration crashes, relationship preservation failures, device vs simulator issues — schema migration diagnostics with testing workflows
swiftui-debugging-diagIntermittent view updates, complex state dependencies, Self._printChanges() analysis — systematic SwiftUI debugging with Instruments integration
swiftui-nav-diagNavigation not responding, deep links showing wrong screen, state lost on tab switch — SwiftUI navigation diagnostics with production crisis defense
vision-diagSubject not detected, hand pose missing, text recognition wrong, barcode issues, performance problems — Vision framework diagnostics

Quality Standards

Diagnostic skills are reviewed against 4 criteria plus mandatory workflows:

  1. Accuracy — Every claim cited to official sources, code tested
  2. Completeness — 80%+ coverage, edge cases documented, troubleshooting sections
  3. Clarity — Examples first, scannable structure, jargon defined
  4. Practical Value — Copy-paste ready, expert checklists, real-world impact
  5. Mandatory Workflows — Required diagnostic steps with pressure scenario defense

Diagnostic skills add pressure scenario defense for production crisis situations.

  • Reference — Comprehensive API guides without workflows
  • Skills — Discipline-enforcing TDD-tested workflows
  • Commands — Quick automated scans

Released under the MIT License