Add Virtual Desktop Switcher v1.6

[sb4ssman]

Summary

Adds Virtual Desktop Switcher (virtual-desktop-switcher) — clickable tray buttons for instant virtual desktop switching on Windows 11.

This is a resubmission under a cleaner mod ID. The earlier submission (taskbar-vd-switcher, PR #3932, merged 2026-06-17) was published before the name was finalized. Please disable or remove taskbar-vd-switcher from the store when convenient.

Features

• One button per virtual desktop, injected into the system tray
• Smart grid layout (balanced, vertical-pack, horizontal-pack) adapts to taskbar height
• Highlights the active desktop immediately on switch; updates on desktop add/remove
• Five tray positions plus Start-adjacent (left of Start, over Start, right of Start)
• Configurable size, spacing, colors, opacity, shine effect, label format, corner radius, border
• Optional Task View button (Win+Tab) as a side column or sliver row
• Tooltip shows each desktop's display name
• Hide when only one desktop exists

Technical

• GetSystemTrayModuleHandle 3-DLL chain: SystemTray.dll → Taskbar.View.dll (version-gated) → ExplorerExtensions.dll
• GetTaskbarXamlRoot with 0x10 default offset and ARM64 disasm probe
• IconView::IconView hook + auto_revoke_t Loaded pattern (no bare lambdas)
• LoadLibraryExW fallback hook + Wh_ApplyHookOperations in AfterInit
• Stoppable retry thread waited in Wh_ModUninit; stoppable VD notification thread with sent-message pump in uninit
• SwitchToDesktop dispatched to a background thread to avoid STA re-entrancy during COM call
• Backward-compatible setting aliases for canonical rubric names

🤖 Generated with Claude Code

[sb4ssman]

Closing in favor of #4516, which correctly updates the existing mod file instead of adding a duplicate under a new id.