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/ConfirmModal.tsx

@@ -1,4 +1,4 @@
-import type { ReactNode } from "react";
+import { useEffect, type ReactNode } from "react";
 import { motion, AnimatePresence } from "framer-motion";
 
 interface ConfirmModalProps {
@@ -91,6 +91,19 @@ export default function ConfirmModal({
   confirmVariant,
   loading,
 }: ConfirmModalProps) {
+  useEffect(() => {
+    if (!isOpen) return;
+
+    function handleKeyDown(e: KeyboardEvent) {
+      if (e.key === "Escape" && !loading) {
+        onClose();
+      }
+    }
+
+    window.addEventListener("keydown", handleKeyDown);
+    return () => window.removeEventListener("keydown", handleKeyDown);
+  }, [isOpen, loading, onClose]);
+
   return (
     <AnimatePresence>
       {isOpen && (