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>

3 files changed, 9 insertions, 3 deletions

diff --git a/desktop/modules/sbbuilder/Store.qml b/desktop/modules/sbbuilder/Store.qml
index 7036f36..e6e9b09 100644
--- a/desktop/modules/sbbuilder/Store.qml
+++ b/desktop/modules/sbbuilder/Store.qml
@@ -74,7 +74,9 @@ QtObject {
         if (section === "manifests" && t === "") return st.markInvalid(section + "/" + key, true);
         if (t === null || t === "") return st.put(section, key, null);
         const d = st.fallback(section, key);
-        st.put(section, key, Array.isArray(d) ? t.split(/\s+/).filter(x => x !== "")
+        const words = t.split(/\s+/).filter(x => x !== "");
+        // A list of numbers stays one, deck-it's workspaces for one.
+        st.put(section, key, Array.isArray(d) ? (typeof d[0] === "number" ? words.map(Number) : words)
                            : typeof d === "number" ? Number(t)
                            : typeof d === "boolean" ? t === "true" : t);
     }
diff --git a/desktop/modules/sbbuilder/Toml.js b/desktop/modules/sbbuilder/Toml.js
index dddb6f7..eb29c88 100644
--- a/desktop/modules/sbbuilder/Toml.js
+++ b/desktop/modules/sbbuilder/Toml.js
@@ -17,7 +17,7 @@
 // set again is activated. Top-level keys are section "".
 //
 // ponytail: the TOML these files use, one key per line: strings, integers,
-// booleans, one-line arrays. A value with anything but a comment after it
+// plain decimals, booleans, one-line arrays. A value with anything but a comment after it
 // (multi-line strings and arrays included) is refused: entries() skips it and
 // set() throws rather than write a duplicate key; such a file is edited by
 // hand. Also not recognised: CRLF line endings, `[ spaced ]` and `[[array]]`
@@ -67,7 +67,7 @@ function val(s, i) {
         }
         return { v: out, i: i + 1 };
     }
-    const m = /^(true|false|[+-]?[0-9][0-9_]*)(?=[\s#,\]]|$)/.exec(s.slice(i));
+    const m = /^(true|false|[+-]?[0-9][0-9_]*(?:\.[0-9][0-9_]*)?)(?=[\s#,\]]|$)/.exec(s.slice(i));
     if (!m) return null;
     const v = m[1] === "true" ? true : m[1] === "false" ? false : Number(m[1].replace(/_/g, ""));
     return { v: v, i: i + m[1].length };
diff --git a/desktop/modules/sbbuilder/test_toml.js b/desktop/modules/sbbuilder/test_toml.js
index c86741d..7e62b4e 100644
--- a/desktop/modules/sbbuilder/test_toml.js
+++ b/desktop/modules/sbbuilder/test_toml.js
@@ -102,4 +102,8 @@ assert.deepStrictEqual(T.sections(file), ["manifests", "refresh"]);
 assert.deepStrictEqual(T.sections("a = 1\n[manifests]\n"), ["manifests"]);
 assert.deepStrictEqual(T.sections("a = 1\n"), []);
 
+// Decimals: read, and rewritten in place (deck-it's display scale).
+assert.strictEqual(T.get("[display]\nscale = 1.5 # hi\n", "display", "scale"), 1.5);
+assert.strictEqual(T.set("[display]\nscale = 1.5 # hi\n", "display", "scale", 2), "[display]\nscale = 2 # hi\n");
+
 console.log("test_toml: ok");