docs(docs): add television documentation and update shell docs for TV integration

docs/tools/television.mdx

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+---
+title: television
+description: tv config symlinked from the repo, a transparent cyberdream theme, and the custom cables behind gho, pj, and ctrl-e in fish, zsh, and bash.
+---
+
+[television](https://github.com/alexpasmantier/television) (`tv`) is a fuzzy picker built on "cables": TOML files that define a source command, a preview, and actions. Every shell picker in the repo runs on a tv cable, with the same keys in fish, zsh, and bash.
+
+| | |
+| --- | --- |
+| Source | `television/config.toml`, `television/cable/*.toml`, `television/themes/cyberdream-transparent.toml` |
+| Link | `dot_config/symlink_television.tmpl` → `~/.config/television` is a symlink to `{{ .chezmoi.sourceDir }}/television` |
+| Target | `~/.config/television/` |
+| Ignore | `.chezmoiignore.tmpl` lists `television`, so it is not copied to `~/television` |
+| Install | Not listed in `.chezmoidata/packages.yaml`; install separately |
+
+The whole directory is a symlink into the source tree, so edits apply without `chezmoi apply`. `cable/` holds tv's stock cables plus the repo's own and overridden ones.
+
+## config.toml
+
+| Key | Value |
+| --- | --- |
+| `default_channel` | `files` |
+| `ui.theme` | `cyberdream-transparent` |
+| `ui.input_bar.position` | `top`, prompt `>` |
+| Borders | `rounded` on the input bar, results, and preview |
+| `ui.preview_panel.size` | `50` |
+| `ui.help_panel.hidden` | `true` |
+
+Global keys added on top of the defaults:
+
+| Key | Action |
+| --- | --- |
+| <kbd>ctrl-e</kbd> | `actions:edit`: the channel's `edit` action |
+| <kbd>ctrl-h</kbd> | `actions:goto_parent_dir`; the help panel loses <kbd>ctrl-h</kbd> |
+| <kbd>end</kbd> | `go_to_input_end` (unchanged) |
+
+## Theme
+
+`themes/cyberdream-transparent.toml` is a separate file because tv 0.15's builtin `cyberdream` shadows a user theme of the same name and paints an opaque `#16181a` background. This theme omits `background`, so kitty's translucent background shows through (tv 0.15 rejects `background = 'none'`).
+
+| Key | Color |
+| --- | --- |
+| `border_fg` | `#3c4048` |
+| `text_fg`, `input_text_fg`, `result_value_fg` | `#ffffff` |
+| `dimmed_text_fg` | `#7b8496` |
+| `result_name_fg` | `#5ea1ff` |
+| `result_line_number_fg` | `#f1ff5e` |
+| `match_fg` | `#5ef1ff` |
+| `selection_fg` / `selection_bg` | `#5eff6c` on `#3c4048` |
+| `preview_title_fg` | `#ffaecf` |
+| `result_count_fg` | `#ffbd5e` |
+| `channel_mode_bg` | `#5ef1ff` on `#16181a` |
+| `remote_control_mode_bg` | `#5eff6c` on `#16181a` |
+| `action_picker_mode_bg` | `#bd5eff` on `#16181a` |
+
+## Sorting
+
+Every custom cable pipes its source through [`mtime-sort`](/shell/scripts#mtime-sort), which orders lines newest-first by the mtime of the path in the line's last tab-separated field (`--repo` stats `<path>/.git/index` first). tv then ranks match quality and frecency on top of that order. All custom cables set `shell = "bash"`, because `$SHELL` is fish.
+
+## Custom cables
+
+| Cable | File | Opened by |
+| --- | --- | --- |
+| [`ghq-repos`](#ghq-repos) | `cable/ghq-repos.toml` | <kbd>ctrl-o</kbd> (`gho`) |
+| [`git-files`](#git-files) | `cable/git-files.toml` | <kbd>ctrl-e</kbd> |
+| [`pj`](#pj) | `cable/pj.toml` | <kbd>ctrl-p</kbd>, <kbd>down</kbd> on an empty prompt (`pj`) |
+| [`files`](#files) | `cable/files.toml` | `tv`, <kbd>ctrl-t</kbd> autocomplete |
+
+The keys are bound in fish (`fish_user_key_bindings.fish`), zsh (`keybinds.zsh`), and bash (`keybinds.bash`). See [fish](/shell/fish#key-bindings) and [bash and zsh](/shell/bash-zsh).
+
+### ghq-repos
+
+Entries are `name<TAB>path`: tv shows and matches the name and prints the path. <kbd>ctrl-s</kbd> cycles between the two sources.
+
+| Source | Entries | Sort |
+| --- | --- | --- |
+| Repos | `ghq list` under `ghq root`, plus the chezmoi source (`~/.local/share/chezmoi`) listed as `github.com/prdlk/dotfiles` | `mtime-sort --repo` |
+| Vaults | Every directory under `~/Documents/Obsidian` (depth 3) that contains `.obsidian`, named relative to that directory | `mtime-sort` |
+
+**Preview.** `onefetch --no-art` for git directories, otherwise `eza --tree --level 2` (falling back to `ls -la`).
+
+| Key | Action |
+| --- | --- |
+| <kbd>enter</kbd> | Print the path. The `gho` function cds into it, clears, and runs `onefetch` in git repos |
+| <kbd>ctrl-e</kbd> | `edit`: `cd <path> && nvim .` on `/dev/tty` |
+| <kbd>ctrl-b</kbd> | `browse`: `cd <path> && gop` in fork mode, so tv stays open ([gop](/shell/scripts#gop)) |
+
+**Needs:** `ghq`, `fd`, `onefetch`, `mtime-sort`.
+
+### git-files
+
+| Source | Entries |
+| --- | --- |
+| Tracked | `git ls-files` of the whole repo (from the toplevel), or `fd -t f` outside a repo |
+| All | `fd -t f -H -E .git` |
+
+Both are sorted with `mtime-sort`. The preview is `bat -n` with `BAT_THEME=ansi`. <kbd>enter</kbd> runs `edit`: `nvim {}` on `/dev/tty`.
+
+**Needs:** `git`, `fd`, `bat`, `mtime-sort`.
+
+### pj
+
+Source `pj --list`; tv shows the display column. The preview runs `pj --preview`, the preview panel is 40% wide, and <kbd>enter</kbd> runs `pj --run`. Running `pj` scans the project and opens this cable with its own records. See [pj](/shell/scripts#pj).
+
+**Needs:** `pj`, `mtime-sort`.
+
+### files
+
+Overrides tv's stock `files` cable. Sources `Default` (`fd -t f`) and `Hidden` (`fd -t f -H`), both piped through `mtime-sort`. The `edit` action opens the selection in `nvim` on `/dev/tty`, so it also works from <kbd>ctrl-t</kbd>, where the shell captures tv's stdout.
+
+**Needs:** `fd`, `bat`, `mtime-sort`.