docs(docs): add pj-palette and Ghostty grouping documentation

docs/desktop/hyprland.mdx

@@ -64,10 +64,13 @@ Omarchy's default bindings stay enabled. `omarchy_default_bindings` and `omarchy
 | `^com\.anthropic\.Claude$` | `special:claude silent` |
 | `^com\.fastmail\.Fastmail$` | `special:fastmail silent` |
 | `^Beeper$` | `special:beeper silent` |
+| `^com\.mitchellh\.ghostty$` | `group = "set"`: opens as a group (tabbed, with a groupbar) |
 | `brave-(www\.)?youtube\.com__.*`, title not matching `.*Picture.?in.?[Pp]icture.*` | Float, pin, size 30% × 30% of the monitor, move to `10, monitor_h*0.7-10` (bottom-left corner) |
 
 Scratch residents are placed `silent` so that [`omarchy-toggle-scratch`](#omarchy-toggle-scratch) decides when to reveal them. The YouTube rule matches both `youtube.com` and `www.youtube.com` because Chromium's class changes once a video plays. It excludes the picture-in-picture overlay so Omarchy's own PiP rule still applies. Its size and inset must stay in sync with [`omarchy-pip`](#omarchy-pip).
 
+Ghostty runs one tmux session per window and titles the window with the session name, so its groupbar reads as a list of sessions. With Omarchy's `group.auto_group`, more Ghostty windows opened while the group is focused join it. See [Ghostty](/terminal/ghostty#sessions).
+
 ## Input
 
 `input.lua`: