dc3ff15e81
- Replace raw string phase model with WorkoutPhase enum (Codable, Sendable, CaseIterable) with built-in .capitalized display name and SwiftUI .color per phase - Decompose WorkoutLiveActivity into reusable view structs: PhasePill, CountdownText, WorkoutProgressBar, MusicInfoRow, HeartRateBadge, PhaseIndicatorDot, WorkoutLockScreenView, WorkoutSmallView — following CraftingSwift iOS 26 architecture patterns - Add AlertConfiguration on work/rest/complete phase transitions so Dynamic Island expands and lights up at key moments - Add 13 #Preview blocks across both widgets covering all presentation types: lock screen, expanded, compact, minimal — for instant Xcode Canvas feedback - Add stale state handling (context.isStale shows 'Last updated' indicator) - MusicLiveActivity: 5 new #Preview blocks for playing/paused/expanded/compact/minimal