Snitt 0.4.0

What's Changed

• Prove the notary credential; untrack appcast.xml by @impressiver in #87
• Filmstrip test: assert luma spread, not first-versus-last by @impressiver in #88
• docs(spec): the rev 5 UI spec — brand tokens, style sheet, 14 fleet work items by @impressiver in #89
• feat(ui): one brand palette, and every surface that owned a colour forwards to it by @impressiver in #90
• feat(ui): the recolour batch — transport, export sheet, settings, rail, menu bar by @impressiver in #91
• feat(timeline): the geometry cluster — cuts as seams, segmented waveform, branded ladder, words lane by @impressiver in #92
• feat(editor): the toolbar is the titlebar by @impressiver in #93
• feat(icon): the mark, re-rendered for macOS 26+ by @impressiver in #94
• feat(ui): the polish sweep, and the item the PR table lost by @impressiver in #95
• fix: ten defects reported from use, plus open-on-launch and the finished HUD by @impressiver in #96
• fix(tests): make the test gates safe under parallel execution by @impressiver in #97
• feat: make clicks actually show — capture their positions (D64), and a Playback ▸ Show Clicks toggle by @impressiver in #98
• fix(menu): trim the status menu, restore its divider, and bind Show Clicks to ⇧⌘C by @impressiver in #99
• release: 0.4.0 by @impressiver in #100

Full Changelog: v0.3.0...v0.4.0