fix(panel): stop the top bar shifting when a Stop row is selected

[StuBehan]

Problem

On the Events tab, selecting a "done" (Stop) row shifted the whole panel — top bar and brand mark included — a few px to the left. Permission (askUserQuestion) rows and an empty list were fine. It came and went, which made it look like a scrollbar glitch.

Cause

The footer hint row is built from .fixedSize() pills that never shrink. A Stop row's wider labels (Open editor + Dismiss) push the hint row to ~618px. At the default/min panel widths (600 / 560) that's wider than the window, so SwiftUI sizes the panel content to the footer's intrinsic width and centers it inside the fixed-width host — dragging the top bar left by half the overflow. A permission row's narrower labels (Approve + Deny) total ~600px and just fit, so no shift. Empty list → tiny footer → fits.

Fix

Remove the FooterDivider between the primary action and the navigation hints in the Events footer. That trims ~19px, bringing the Stop-row footer to within the panel width so it no longer overflows and the panel stays put.

Testing

Reproduced in a faithful SwiftUI harness under AppleShowScrollBars = Always at 600px — brand-mark X was 3.2 (shifted) with the divider, 12.0 (correct) without. Verified live by injecting Stop events into the running panel.

Note: this lands the Stop-row footer at ~exactly the panel width, so it has little margin — dragging the panel narrower than ~600px (min is still 560) could re-trigger it. A follow-up could bump panelMinWidth to give headroom if that proves annoying.