Keep clipboard panel above full-screen apps

[bifrost-proxy]

Summary

• present the clipboard bar as a non-activating panel so invoking it does not switch away from a full-screen app
• raise and reassert the panel window level on every presentation
• keep the panel available in all Spaces, including full-screen auxiliary Spaces

Verification

• installed and manually verified from full-screen Terminal on macOS 26.5
• isolated three-launch UI regression passed
• real iCloud three-launch UI regression passed with cleanup and no File Provider conflicts
• keyboard deletion regression passed
• localization, history settings, updater contract, Universal release build, DMG/signature verification passed

The strip performance functional result passed; the strict 100 MB RSS gate measured 104.0 MB on the new build versus 107.1 MB on the unchanged 1.7.2 baseline.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Keep the panel below its transient menus

When any in-panel Menu or context menu is opened, this level places the bar above AppKit's standard pop-up-menu windows because .screenSaverWindow + 1 exceeds .popUpMenu. Consequently, the More menu in BarView and every card context menu in ClipCardView are ordered behind the still-visible panel—often entirely within its 350-point frame—so their items are obscured and cannot be clicked. Use a level below transient UI, or explicitly ensure those windows are promoted above the panel.

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