docs(docs): expand terminal and tmux documentation with launch commands, prompts, persistence, and keybinding updates

docs/desktop/hyprland.mdx

@@ -279,7 +279,7 @@ Focuses an app's window, cycles to the next one on repeated presses, or launches
 | `ghostty` | `ghostty` | `ghostty` |
 | `browser` | zen, brave, chromium, google-chrome, firefox, librewolf, vivaldi, microsoft-edge, helium — excluding `chrome-`/`webapp-` web apps | `omarchy-launch-browser` |
 | `brave` | `^brave` (Brave Origin and its web apps) | `brave-origin` |
-| `terminal` | kitty, alacritty, ghostty, foot, wezterm (Tern, the scratchpad terminal, does not match) | `omarchy-launch-terminal` |
+| `terminal` | kitty, alacritty, ghostty, foot, wezterm (Tern, the scratchpad terminal, does not match) | `omarchy-launch-terminal` (`xdg-terminal-exec`: the OS default terminal from `~/.config/xdg-terminals.list`, in the focused terminal's cwd) |
 | `ai` | `claude\|hermes` | `hermes desktop` |
 | anything else | `^APP$` | the argument as a command |
 

docs/desktop/niri.mdx

@@ -433,7 +433,7 @@ Deployed to `~/.config/niri/scripts/`. `70-binds.kdl` binds none of them, so the
 | `kitty-CLASS` | exactly that class | `kitty --class kitty-CLASS` (optional command from the empty `KITTY_CMDS` map) |
 | `ghostty` | `ghostty` | nothing, prints a message |
 | `browser` | `^(zen\|brave\|chromium\|firefox)` | `zen` |
-| `terminal` | `kitty\|alacritty\|ghostty` | `kitty` |
+| `terminal` | `kitty\|alacritty\|ghostty` | `xdg-terminal-exec` (the OS default terminal from `~/.config/xdg-terminals.list`) |
 | `ai` | `claude\|hermes` | `hermes desktop` |
 | anything else | exact app-id | the argument as a command |