Enhanced plank-wayland dock with multi-window picker, hover menu, 20+ themes

[franklinbravos]

I forked and enhanced the original plank-wayland example with several improvements for daily driver use. Sharing back to the community:

Repository: https://github.com/franklinbravos/plank-wayland

Features added:

• Multi-window picker — click or hover (400ms delay) on apps with multiple windows to show a window selection menu
• Hover auto-open/close — hover over dock icons opens/closes the window menu automatically
• Multi-monitor support — dock renders on both internal and external displays
• Window focus via Hyprland IPC — clicking a window entry in the menu dispatches focuswindow + alterzorder + movecursor
• Auto-hide timer — menu auto-closes after 5s of inactivity (pauses on hover)
• Tooltip suppression — app name tooltip hides when window menu is open
• 20+ built-in themes — macos, glass, neon, obsidian, deep-sea, frost, etc.
• Settings panel — right-click dock background to customize live
• Icon theme auto-detection — follows GTK/KDE system icon theme

Key fixes over the original example:

• Fixed ReferenceError: dockWindow is not defined — dockWindow is inside a Loader > Component and was inaccessible from ShellRoot.activateApp()
• Added WlrLayershell.layer: WlrLayer.Overlay to menu PanelWindow so clicks register above windows

All configuration is documented with a full README.