v1.8.0: warehouse module (16 commits), docházka mzda model, leave_type=holiday removal, api.ts race fix

Highlights:
- Warehouse module: receipts, issues, reservations, inventory, reports, dashboard,
  master data (categories, suppliers, locations), FIFO service, integration tests
- Docházka: mzda PDF counting model (Odpracováno / Vč. svátků / Přesčas / Svátek /
  So/Ne / Noc) with Czech weekday names and decimal hours
- AttendanceAdmin/AttendanceHistory KPI cards unified to mzda formula with
  fund bar colored by delta, badges for Práce/Dov/Nem/Sv/Nep
- Remove leave_type=holiday entirely (auto-computed from Czech public holidays)
- Allow multiple work shifts per day (overlap detection only)
- Pre-flight refresh in api.ts eliminates spurious 401s on fresh page loads
- Prisma: company_settings gets 6 nullable columns for warehouse numbering
  (PRI/VYD/INV prefixes, default patterns); migration seeds defaults

src/admin/components/warehouse/ReservationPicker.tsx

@@ -0,0 +1,54 @@
+import { useQuery } from "@tanstack/react-query";
+import { warehouseReservationListOptions } from "../../lib/queries/warehouse";
+
+interface ReservationPickerProps {
+  itemId: number | null;
+  projectId: number | null;
+  value: number | null;
+  onChange: (reservationId: number | null, remainingQty: number) => void;
+}
+
+export default function ReservationPicker({
+  itemId,
+  projectId,
+  value,
+  onChange,
+}: ReservationPickerProps) {
+  const { data: result } = useQuery(
+    warehouseReservationListOptions({
+      item_id: itemId ?? undefined,
+      project_id: projectId ?? undefined,
+      status: "ACTIVE",
+      perPage: 100,
+    }),
+  );
+
+  const reservations = result?.data ?? [];
+
+  return (
+    <select
+      className="admin-form-select"
+      value={value ?? ""}
+      onChange={(e) => {
+        const val = e.target.value;
+        if (!val) {
+          onChange(null, 0);
+          return;
+        }
+        const reservationId = Number(val);
+        const reservation = reservations.find((r) => r.id === reservationId);
+        if (reservation) {
+          onChange(reservationId, Number(reservation.remaining_qty));
+        }
+      }}
+    >
+      <option value="">— žádná rezervace —</option>
+      {reservations.map((r) => (
+        <option key={r.id} value={r.id}>
+          R{r.id} — {r.project?.name ?? `Projekt #${r.project_id}`} — zbývá:{" "}
+          {Number(r.remaining_qty)} {r.item?.unit ?? "ks"}
+        </option>
+      ))}
+    </select>
+  );
+}