style: format code with prettier agian

src/lib/theme-custom-store.ts

@@ -27,15 +27,12 @@ const EXTRA_KEYS = [
   "theme_preset",
 ];
 
-const ALL_KEYS: string[] = [
-  ...THEME_COLOR_KEYS.flatMap((k) => [k, `${k}_dark`]),
-  ...EXTRA_KEYS,
-];
+const ALL_KEYS: string[] = [...THEME_COLOR_KEYS.flatMap((k) => [k, `${k}_dark`]), ...EXTRA_KEYS];
 
 function fallbackFor(key: string): string {
   const preset = PRESETS["Atom (golden)"];
   if (key.endsWith("_dark")) {
-    const base = key.slice(0, -("_dark".length)) as ThemeColorKey;
+    const base = key.slice(0, -"_dark".length) as ThemeColorKey;
     return preset.dark[base] ?? ""; // eslint-disable-line security/detect-object-injection -- key derived from internal THEME_COLOR_KEYS
   }
   if (key in preset.light) {
@@ -87,7 +84,11 @@ async function persist(themes: CustomTheme[]): Promise<void> {
   siteSettings.reload();
 }
 
-export async function upsertCustomTheme(name: string, settings: Record<string, string>, id?: string): Promise<CustomTheme> {
+export async function upsertCustomTheme(
+  name: string,
+  settings: Record<string, string>,
+  id?: string,
+): Promise<CustomTheme> {
   const themes = await listCustomThemes();
   const trimmed = name.trim() || "Untitled theme";
   if (id) {