Add tailscale plugin

shell/plugins/tailscale/README.md

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+# Tailscale Omarchy Widget
+
+Native Omarchy bar widget for Tailscale.
+
+## Features
+
+- Shows Tailscale connection state in the bar
+- Left click opens a keyboard-friendly panel
+- Right click toggles Tailscale on/off
+- Switch between logged-in Tailscale accounts when multiple are available
+- Browse peers from `tailscale status --json`
+- Copy a peer's Tailscale IP, host name, or DNS name
+
+## Keyboard shortcuts
+
+Inside the panel:
+
+- `j` / `k` or arrows: move cursor
+- `enter` / `space`: activate current row
+- `c`: copy selected peer IP
+- `n`: copy selected peer name
+- `d`: copy selected peer DNS name
+- `t`: toggle Tailscale
+- `r`: refresh status
+- `esc`: close
+
+## Requirements
+
+- `tailscale` CLI on `PATH`
+- `wl-copy` for clipboard copy actions
+
+## Icon
+
+Renders the Tailscale mark natively as a theme-colored 3×3 dot grid, matching the official SVG silhouette while avoiding tiny-SVG rendering quirks in the bar.
+
+## Add to the bar
+
+This widget ships as first-party plugin `omarchy.tailscale`. Add it through Omarchy's bar settings UI, or add an entry such as `{ "id": "omarchy.tailscale" }` to one of the `bar.layout` sections in `~/.config/omarchy/shell.json` and restart the shell.