Search SwiftUI Screen

A workspace search screen: a two-tone title, a search pill, recent documents as blocks, people and quick actions, with CommandPalette in a sheet. The palette opens at the medium detent with the search field focused. Typing filters instantly through a private fuzzy scorer; with an empty query the list shows a Recent section followed by every group in order. One highlight moves between rows with matchedGeometryEffect and ticks on every change. Hold on the list, then slide: the highlight follows the finger without lifting it, and releasing runs the highlighted command. Tap a row or press Go on the keyboard to run it too, and pull the grabber down to dismiss.

Notes

• PaletteCommand carries title, symbol, group, keywords and a @MainActor @Sendable action, so a command list can be built anywhere.
• The scorer is a subsequence match: every query character must appear in order in the title or in a keyword. Prefix, word-start and adjacent hits score higher, longer targets score slightly lower, and keyword hits are weighted below title hits. Empty results show ContentUnavailableView.search.
• Scrub is a LongPressGesture(0.25s) sequenced before a DragGesture; while it runs the scroll view is disabled so the list holds still. Row frames are measured with onGeometryChange in the list's named coordinate space.
• Running a command inserts its id at the front of recents (capped at eight), dismisses, then calls the action.
• Rows are VoiceOver buttons with .isSelected on the highlight; group titles carry .isHeader. Reduce Motion shortens the highlight move to a short ease-out.
• On the screen, the pill and the Search tab both open the palette, and every command writes back: opening a document moves its block to the front of the rail, New doc files one, and a toast takes the tab bar's place to confirm.
• CommandPaletteExample at the end of CommandPalette.swift is the Search screen from the preview.