Notate v0.1.8

• About Notate opens the About tab — the hardcoded tab index silently became Updates when that pane was inserted; select by label
• Cask template: modern depends_on macos syntax — brew deprecated string comparisons; bare symbol already means that version or newer
• Closing wordmark rests on the page floor — min-h-screen only sets a minimum, so a viewport taller than the content collected its slack below the fade