docs(docs): add mandible-pick script documentation and update tmux palette entries

docs/terminal/tmux.mdx

@@ -92,20 +92,19 @@ Labels longer than 27 characters end in `…`. The icon comes from tmux-nerd-fon
 
 | File | Contents |
 | --- | --- |
-| `commands.json` | The kitty launchers ported as palette items: **Lazygit** (90% popup in the pane's cwd; kitty `ctrl+shift+g`), **Yazi** (new window; kitty `ctrl+shift+f`), **Neovim Split** (right, 50%; kitty `ctrl+shift+e`), **Shell History (atuin)** (`atuin-pick` in a 25% split below; kitty `ctrl+shift+p`). Also **omp** (the omp agent in a full-height split on the right, 33% of the window; aliases `agent`, `ai`), **Project Tasks** (opens the tasks palette), **Sessions (sessionx)**, **Save Sessions**, and **Restore Sessions** (resurrect). Programs are started with `exec`, so the tab icon is the program's, not the shell's |
+| `commands.json` | The kitty launchers ported as palette items: **Lazygit** (90% popup in the pane's cwd; kitty `ctrl+shift+g`), **Yazi** (new window; kitty `ctrl+shift+f`), **Neovim Split** (nvim in a split to the left, 60% of the pane; alias `nv`; kitty `ctrl+shift+e`), **Shell History (atuin)** (`atuin-pick` in a 25% split below; kitty `ctrl+shift+p`). Also **btop** (80% popup; aliases `top`, `htop`), **mandible** (80% popup running [`mandible-pick`](/shell/scripts#mandible-pick); alias `man`), **television** (`tv channels`, the [channel picker](/tools/television), in a new window in the pane's cwd; alias `tv`), **gitframe** (git diff viewer in a new window in the pane's cwd; alias `gf`), **omp** (the omp agent in a full-height split on the right, 33% of the window; aliases `agent`, `ai`), **Project Tasks** (opens the tasks palette), **Sessions (sessionx)**, **Save Sessions**, and **Restore Sessions** (resurrect). Programs are started with `exec`, so the tab icon is the program's, not the shell's |
 | `palettes/tasks.json` | The **Project Tasks** palette (`prefix t`, Ghostty `ctrl+shift+space`), fed by [`pj-palette`](/shell/scripts#pj-palette): `bun install`, `bun run dev`, `uv sync`, `uv run python`, `make`, `go run .`, `cargo run` as Quick items when the project has them, then every task `pj` finds, grouped by tool. Each runs in a full-width split along the bottom (25% of the window) in its directory. `ctrl-c` stops a running task; once it has exited, `enter` or `ctrl-c` closes the pane |
+| `hidden.json` | Hides the built-in **Switch Theme...** item, and with it the Appearance section: the palette stays on the fixed cyberdream `theme.json` |
 | `shortcuts.json` | Ghostty `ctrl+shift` chords shown next to the built-in items they trigger (New Window → `Ctrl+Shift+T`, …) |
 | `theme.json` | Cyberdream: bg `#16181a`, panel `#1e2124`, selected `#243348` (the active-tab plate), muted `#7b8496`, accent `#5ea1ff` |
 
-The palette's own **Switch Theme...** item rewrites `theme.json`; in chezmoi's symlink mode that edits the repo copy.
-
 ### Persistence
 
 resurrect saves sessions, windows, panes, cwds, pane contents, and a default set of programs (nvim, less, man, …). Keys: `prefix C-s` saves, `prefix C-r` restores. continuum saves automatically every 10 minutes. When a tmux server starts and no other tmux server is running, continuum restores the last save. In practice that means the first Ghostty window after login or a reboot.
 
 ## tmux-nerd-font-window-name.yml
 
-`show-name: false`, because `automatic-rename-format` supplies the label. The icon sits on the left, with a fallback icon and a blank multi-pane icon. Icons are defined for `mprocs`, `mm`, `macmon`, `make`, `zsh`, `nvim`, `devbox`, `psql`, `yazi`, `lazygit`, `gh`, `tv`, `docker`, `bun`, `node`, `npm`, `pnpm`, `go`, `bunx`, and `claude`. The plugin parses the YAML with awk and does not interpret `\U` escapes, so the glyphs are literal characters.
+`show-name: false`, because `automatic-rename-format` supplies the label. The icon sits on the left, with a fallback icon and a blank multi-pane icon. Icons are defined for `mprocs`, `mm`, `macmon`, `make`, `zsh`, `nvim`, `devbox`, `psql`, `yazi`, `lazygit`, `gh`, `tv`, `docker`, `bun`, `node`, `npm`, `pnpm`, `go`, `bunx`, `claude`, `omp`, and `gitframe`. The plugin parses the YAML with awk and does not interpret `\U` escapes, so the glyphs are literal characters.
 
 ## niri-title.sh
 
@@ -116,4 +115,4 @@ Installed only on Linux `desktop`/`laptop` roles (gated in `.chezmoiignore.tmpl`
 3. Git repo: directory name and branch.
 4. Otherwise the cwd basename.
 
-`tmux.conf` does not currently call the script; its title string is `#h:#W`.
+`tmux.conf` does not currently call the script; its title string is `#S`.