fix: 2026-06-09 full-codebase audit hardening

Validation: shared NaN-guarded Zod coercion helpers in schemas/common.ts replace
the raw number|string transform idiom across every schema (the root-cause NaN bug
class); emailOrEmpty + lenient isoDateString/timeString.

Security: roles privilege-escalation closed; refresh-token family revocation on
reuse; TOTP uses config params; read endpoints permission-guarded; received-invoices
gross VAT on all paths; orders-pdf custom-items authz.

Concurrency: $queryRaw SELECT...FOR UPDATE locks in ascending-id order (warehouse
confirm/cancel, attendance lockUserRow); uniqueness checks moved into create
transactions (TOCTOU -> 409); deterministic id tiebreak on second-precision
timestamp ordering (plan resolveCell/resolveGrid, warehouse FIFO).

Frontend: Rules-of-Hooks fixed across ~14 pages + PlanCellModal; UTC-date persisted
fields; dashboard invalidation gaps; stale-closure confirm bugs.

Tooling/tests: ESLint flat config (react-hooks/rules-of-hooks = error) + Prettier;
tsconfig.test.json so tsc -b type-checks the tests; removed 3 dead deps; npm audit
fix (8 -> 3). Suite 195 -> 247 (happy-path auth, FIFO oldest-first, flakiness fixes),
isolated on app_test via .env.test with a hard-throw setup guard.

Gates: tsc 0 | build 0 | vitest 247/247 | eslint 0 errors.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/admin/pages/WarehouseInventoryDetail.tsx

@@ -67,13 +67,9 @@ export default function WarehouseInventoryDetail() {
     error,
   } = useQuery(warehouseInventoryDetailOptions(id));
 
-  if (!hasPermission("warehouse.inventory")) return <Forbidden />;
-
-  const confirmMutation = useApiMutation<void, void>({
-    url: () =>
-      session
-        ? `/api/admin/warehouse/inventory-sessions/${session.id}/confirm`
-        : "/api/admin/warehouse/inventory-sessions/0/confirm",
+  const confirmMutation = useApiMutation<number, void>({
+    url: (sessionId) =>
+      `/api/admin/warehouse/inventory-sessions/${sessionId}/confirm`,
     method: () => "POST",
     invalidate: ["warehouse"],
     onSuccess: () => {
@@ -82,10 +78,13 @@ export default function WarehouseInventoryDetail() {
     },
   });
 
+  // All hooks above this line — permission gate is the last thing before render.
+  if (!hasPermission("warehouse.inventory")) return <Forbidden />;
+
   const handleConfirm = async () => {
     if (!session) return;
     try {
-      await confirmMutation.mutateAsync(undefined);
+      await confirmMutation.mutateAsync(session.id);
     } catch (e) {
       alert.error(e instanceof Error ? e.message : "Chyba připojení");
     }