feat(deckit): settings page for deck-it, the tablet dashboard

A page under Desktop for deck-it's ~/.config/deck-it/config.toml and its
login line. deck-it now merges that file over its shipped config key by
key, so the page writes only what differs and takes its placeholders
from `deck-it defaults` rather than copying them.

- Start at login edits hypr-theme's autostart.lua at once, as the
  Autostart page does, through Autostart.js: it re-enables a commented
  deck-it line or adds `deck-it wifi --wait`; off comments them out.
- Every config key, with launchers picked from the installed apps (desktop
  ids, reorderable) and module switches built from the defaults.
- A status line polls `deck-it status` every 2s while the page is open;
  Restart runs `deck-it stop` and the login command, then reports
  "Restarted" once the server runs with a tablet tunnelled, or what it
  saw after 30s.

Shared helpers it needed: Toml.js reads plain decimals (the display
scale), Store keeps a list of numbers numeric (the workspaces), and
ChoiceSetting takes a store as Setting and BoolSetting already do.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 36 insertions, 0 deletions

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+# deckit
+
+One settings page, under Desktop, for deck-it (the tablet dashboard, its own
+repo): whether it starts at login, and its `~/.config/deck-it/config.toml`.
+
+The config file is a sparse override. deck-it merges it over its shipped
+`config.toml` key by key, so this page writes only what differs, and an
+emptied field unsets the key and brings the default back. The defaults come
+from `deck-it defaults` (JSON), run once when the page first loads, so they
+are never copied here; deck-it must be on PATH (`~/bin/deck-it`, a link to
+the repo's launcher). The draft rules are the settings window's, through
+sbbuilder's `Store` and `Toml.js`, which gained plain decimals for the display
+scale and lists of numbers for the workspaces.
+
+Start at login is not part of the draft: like the Autostart page, it edits
+hypr-theme's `autostart.lua` at once, through `Autostart.js`. On re-enables a
+commented-out `deck-it` line or adds `deck-it wifi --wait` before the closing
+`end)`; off comments out every enabled one. Any `hl.exec_cmd` line whose
+program is `deck-it` counts, so a hand-written `deck-it watch-usb` shows as on.
+
+Launchers are desktop ids (`[launch] apps`), added from the installed apps
+the way the Autostart page picks one, minus terminal apps. Up and Remove edit
+the list; the order is the button order on the tablet.
+
+deck-it reads its config once at start, so a save applies on Restart
+deck-it, which runs `deck-it stop` and then the login command.
+
+While the page is open it polls `deck-it status` (JSON: server, display,
+waiting, tablet, extend) every 2s and shows one line with a dot: green when
+the server runs with a tablet tunnelled (and the display streams, if enabled),
+yellow while starting or waiting for the tablet, red when stopped. After a
+Restart it reports "Restarted" once that state is green, or what it saw if
+it is not back within 30s; a `wifi --wait` with no tablet in reach ends there.
+
+Check: `node desktop/modules/sbbuilder/test_toml.js`; the deck-it side is
+tested in its repo.