fix: remaining admin & layout light theme polish

- Admin forms, dialogs, and page editors: light-mode borders, text contrast
- YandexMap: theme-aware map styles
- Layout: theme init script adjustments

src/app/admin/bookings/SearchBar.tsx

@@ -43,10 +43,10 @@ export function SearchBar({
         value={query}
         onChange={(e) => handleChange(e.target.value)}
         placeholder="Поиск по имени или телефону..."
-        className="w-full rounded-lg border border-white/[0.08] bg-white/[0.04] py-2 pl-9 pr-8 text-sm text-white placeholder-neutral-500 outline-none focus:border-gold/40"
+        className="w-full rounded-lg border border-neutral-200 bg-neutral-100 py-2 pl-9 pr-8 text-sm text-neutral-900 placeholder-neutral-400 outline-none focus:border-gold/40 dark:border-white/[0.08] dark:bg-white/[0.04] dark:text-white dark:placeholder-neutral-500"
       />
       {query && (
-        <button onClick={clear} className="absolute right-2 top-1/2 -translate-y-1/2 text-neutral-500 hover:text-white">
+        <button onClick={clear} className="absolute right-2 top-1/2 -translate-y-1/2 text-neutral-500 hover:text-neutral-900 dark:hover:text-white">
           <X size={14} />
         </button>
       )}