[bendns]

UI refresh targeting macOS 26 (Liquid Glass), with a friendlier tone throughout.

Changes

Platform

• Deployment target raised from 13.0 to 26.0. CI and release runners move from macos-15 to macos-26, because the Liquid Glass APIs need the macOS 26 SDK. If the PR's CI fails to find that runner, this is the line to look at.
• ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME was never set, so the orange AccentColor asset (the brand color in the README cover) was ignored and the UI fell back to the system blue. It is now wired up.
• The build has no warnings at the macOS 26 SDK. Removed: deprecated Text + concatenation, activate(ignoringOtherApps:), single-parameter onChange, and an unneeded nonisolated(unsafe).

Popover

• A countdown ring around the posture icon, with symbol transitions and a bounce when the posture changes. These replace the scale pulse.
• Glass prominent primary action, plus glass Snooze, Skip and Pause buttons in a GlassEffectContainer.
• A "Standing today" card with progress toward a 3h daily goal (Presets.dailyStandGoal).
• Status lines that use the schedule, e.g. "Enjoy lunch · back at 13:00", "Your day starts at 9:00", "Done for today. See you tomorrow!".
• Per-second updates are limited to two TimelineViews.

First launch

• New welcome window in three steps: intro, then mode cards plus work and lunch hours, then notification permission.
• Permission is now asked in context instead of at app launch.
• Existing users are detected through the stored posture date and skip the flow.

History

• Toolbar with the Today/This Week picker, Export and Reset.
• Summary cards: standing today vs goal, daily average, switch rate.
• Hover tooltips on both charts, a legend, and a labeled goal rule.
• ContentUnavailableView empty states.
• In the week chart, standing is now stacked first. Before, the goal line was compared against sitting plus standing.

Settings and notifications

• A 2x2 grid of mode cards replaces the 4-item segmented control that truncated labels. The redundant preview line under it is removed.
• The Off/Home/Office day picker from refactor(schedule): 3-state segmented picker per day #4 is kept as is.
• Several notification wordings rotate, and the action labels are clearer.

Performance

• The popover's per-second clocks pause while the menu bar window is hidden (onWindowVisibilityChange + PausableEverySecondSchedule). A probe showed that a plain .periodic TimelineView keeps ticking after the window is ordered out.
• History is kept in chronological order, and date-range lookups scan back from the end instead of filtering everything.
• Events older than 365 days are dropped at launch. This bounds memory and the cost of rewriting history.json, but CSV export only covers the last year.

Testing

• 57 unit tests pass (added HopFormatTests, a week-bucketing test, and history ordering, range and pruning tests).
• I rendered the popover, welcome, history, week chart and General tab off-screen to check layout. Glass button backgrounds don't appear in off-screen renders, so the glass look still needs a check on a real display.

Not changed / follow-ups

• The app icon is still green, which doesn't match the orange brand. Changing it is a design call, not done here.
• macOS 27: nothing here uses private or deprecated APIs or OS version checks with an upper bound, but it hasn't been run on macOS 27.

Files changed

• New: Hop/Design/WindowVisibility.swift, Hop/Models/Onboarding.swift, Hop/Views/Welcome/WelcomeView.swift, Hop/Views/Components/ModePicker.swift, Hop/Views/Components/TimePickers.swift (moved out of ScheduleTab), HopTests/HopFormatTests.swift
• Hop/Design/DesignSystem.swift, Hop/Menu/MenuPopoverView.swift, Hop/HopApp.swift, Hop/AppDelegate.swift
• Hop/Views/History/HistoryView.swift, TodayChart.swift, WeekChart.swift
• Hop/Views/Settings/GeneralTab.swift, ScheduleTab.swift
• Hop/Persistence/HistoryStore.swift, HopTests/HistoryStoreTests.swift
• Hop/Models/Presets.swift, Hop/Scheduler/NotificationManager.swift, Hop/Scheduler/PostureScheduler.swift
• project.yml, README.md, .github/workflows/ci.yml, .github/workflows/release.yml

Parts of this fix were generated with Claude Code assistance.