Adds an alternative iPhone navigation style, switchable in Settings, that
replaces the bottom tab bar with a single center floating button which fans
all tabs out into an upper 180° semicircle.
- Settings → 내비게이션: pick 기본 하단 탭 바 / 중앙 플로팅 반원 메뉴.
Stored device-local via @AppStorage(SettingsKeys.navStyle) (not synced);
the 탭바 구성 section auto-hides in radial mode since all tabs are shown.
- iPhone (Compact) only: RootNavigationView branches on NavStyle. iPad/Mac
sidebar and the watch target are untouched.
- Radial menu (RadialNavigationView): glass FAB at bottom-center over a
tab-bar-hidden TabView (per-tab navigation state preserved). Tapping the
FAB blooms all 7 tabs into an upper 180° arc with per-icon name labels;
tapping an icon routes immediately and closes; tapping the FAB or the
dimming scrim closes. Current tab is highlighted.
- Drops the 더보기 indirection in radial mode via AppRouter.allTabsDirect,
so cross-tab routing (openHistory/openStats) selects tabs directly.
- Liquid Glass (.ultraThinMaterial) styling on the FAB, icons and labels.
- Overlay is kept top-most in the ZStack with hit-testing gated to the
expanded state, so scrolling grid content can never intercept the button.
- DEBUG: -navStyle radial / -radialExpanded YES launch args for simulator
verification (no way to tap widgets/overlays via simctl).
Scope: iPhone navigation only; no changes to iPad/Mac sidebar, the watch
app, core data/models, or widget code.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013yKDMhuF39GVYy3FMcGHh7
8f2b5fab93