- Toolbar: text buttons → FluentIcon TransparentToolButton with tooltips
- Filter row: removed text labels, added VerticalSeparator
- Speed test: geo-based URLs (datapacket CDN per country), 3-round average
- Speed test + ping: progress indicator (N/M) in status bar
- Node detail subpage: double-click opens inline detail with BreadcrumbBar
- Ping/speed history: persisted to disk, shown in detail subpage tables
- Traffic detail: inline subpage with BreadcrumbBar (no separate dialog)
- Dashboard: toggle button with Play/Pause icon inside connection card
- Dashboard: removed duplicate bottom action buttons (already in nav menu)
- Delete confirmation: MessageBox before deleting servers
- Clickable table headers for sorting
- Prevent deselection on empty area click
- Connection switching: hot-swap fallback, stale flag verification, stuck timeout
- Status column: OK/!/X with tooltips (blocked vs dead vs alive)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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