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/pages/TripsHistory.tsx

@@ -14,8 +14,6 @@ import {
   type BackendTrip,
   type TripVehicle,
 } from "../lib/queries/trips";
-import { Skeleton } from "boneyard-js/react";
-import TripsHistoryFixture from "../fixtures/TripsHistoryFixture";
 
 interface Trip {
   id: number;
@@ -217,11 +215,11 @@ export default function TripsHistory() {
         transition={{ duration: 0.25, delay: 0.12 }}
       >
         <div className="admin-card-body">
-          <Skeleton
-            name="trips-history"
-            loading={isPending}
-            fixture={<TripsHistoryFixture />}
-          >
+          {isPending ? (
+            <div className="admin-loading">
+              <div className="admin-spinner" />
+            </div>
+          ) : (
             <>
               {trips.length === 0 && (
                 <div className="admin-empty-state">
@@ -296,7 +294,7 @@ export default function TripsHistory() {
                 </div>
               )}
             </>
-          </Skeleton>
+          )}
         </div>
       </motion.div>
     </div>