feat: Sync tab, hamburger menu, network status, browse UX
- Replace History tab with Sync tab (file list, NAS status, free-up-space retention)
- Add AppMenuView hamburger sheet (History, Errors, Connection Status, Sync Activity)
- BackupView: Kisani logo chip in toolbar, hamburger menu button, swipeable ring
pages (progress/pending/failed/uploaded), always-visible compact stats strip
- SettingsView: NETWORK section (SSID, NAS reachability, trusted-network warning,
refresh button)
- BrowseView: pull-to-refresh, long-press context menu on items
- LANMonitor: nasReachable, nasCheckTime, checkNASReachability(host:port:)
- ConnectionStore: localRetentionDays (0/60/90/365 days)
- Regenerate xcodeproj with xcodegen to include new files
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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