SwiftUI iOS/macOS 27 delta reference (WWDC 2026) — Apple-authored references vendored from Xcode 27's exported agent skills, plus Cal SDK-verified extras. Use for any SwiftUI work targeting SDK 27. Use when a SwiftUI view using @State fails to compile with "used before being initialized", "invalid redeclaration of synthesized property", or "extraneous argument label" errors after an SDK update (@State became a macro in SDK 27 — the obvious fix of reordering init assignments is WRONG; consult references/state-macro.md first); when @ViewBuilder/@ContentBuilder code hits ambiguous overloads in overlay/background or type-check regressions; when adding drag-to-reorder to any container via reorderable()/reorderContainer; when working with AsyncImage caching or AsyncImage(request:); when adding swipe actions to rows outside List via swipeActionsContainer(); when controlling toolbar overflow (visibilityPriority, ToolbarOverflowMenu, toolbarMinimizeBehavior); when presenting alert/confirmationDialog from an optional i
iOS/macOS/iPadOS 27 framework reference (WWDC 2026). Corrects stale model knowledge about App Intents, App Schemas, Foundation Models, and Siri AI. Invoke when building or reviewing iOS 27 / WWDC 2026 features, or when a model assumes iOS 26 / SiriKit is current.
Apple Liquid Glass (iOS 26, refined in 27) design system reference. Invoke when building UI, reviewing visual design, or implementing glass effects, background extension, tab bar minimize, typography, spacing, animations, or accessibility.
Advance the pipeline - find and execute next step
Project setup - scan codebase, create Cal structure, generate or improve CLAUDE.md
Scan codebase for small code hygiene wins — TODOs, dead code, naming issues. General-purpose tool for any project.
Context preservation - route learnings to cal.md (permanent) or memories/ (ephemeral)
Deep investigation with 7 analysis modes. Usage: /cal:analyze [mode] [subject]. Modes: inside-out, cake-walk, rubberneck, burst, bisect, trace, diff-audit.