v2.8.0

What's new

• Background update check — the Bookends menu now silently checks for updates when opened (once per hour). When a new version is available, the menu item shows "Update available: vX.Y.Z" instead of "Check for updates".

Fixes

• Bar reorder dialog no longer shows two Cancel buttons
• Preset menu refreshes immediately after saving, deleting, or renaming a preset

Under the hood

• Major code simplification: extracted shared helpers, deduplicated logic across modules, and split the updater into its own file for easier maintenance