feat(warehouse): add shared warehouse components

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/admin/components/warehouse/LocationSelect.tsx

@@ -0,0 +1,31 @@
+import { useQuery } from "@tanstack/react-query";
+import {
+  warehouseLocationListOptions,
+  type WarehouseLocation,
+} from "../../lib/queries/warehouse";
+
+interface LocationSelectProps {
+  value: number | null;
+  onChange: (locationId: number | null) => void;
+}
+
+export default function LocationSelect({
+  value,
+  onChange,
+}: LocationSelectProps) {
+  const { data: locations } = useQuery(warehouseLocationListOptions());
+  return (
+    <select
+      className="admin-form-select"
+      value={value ?? ""}
+      onChange={(e) => onChange(e.target.value ? Number(e.target.value) : null)}
+    >
+      <option value="">-- bez lokace --</option>
+      {locations?.map((loc: WarehouseLocation) => (
+        <option key={loc.id} value={loc.id}>
+          {loc.code} - {loc.name}
+        </option>
+      ))}
+    </select>
+  );
+}