feat(sync): live cross-module cache invalidation (no manual refresh)

- procurement store refreshes right after a warehouse receipt (arrivals) and
  after role/project changes (organization/admin), so the ledger reflects
  warehouse actions immediately
- refetchOnWindowFocus enabled on the shared query client
- BroadcastChannel (lib/crossTab.ts): mutations broadcast 'quotes' /
  'inventory'; all warehouse pages + the store hook resync open tabs
  automatically (receipt in one tab updates the ledger in another)
- warehouse mutations (stock changes) notify other tabs; same-page refresh
  behavior unchanged

frontend/src/pages/Inventory/useInventoryData.ts

@@ -5,6 +5,7 @@
 import { useCallback, useEffect, useMemo, useState } from "react";
 import { apiV26 } from "../../lib/api";
 import { useAuthStore } from "../../store/auth";
+import { useDataChanged } from "../../lib/crossTab";
 import type { InventoryRow, InventoryTransaction, Warehouse } from "../../lib/types";
 
 export interface LookupData {
@@ -63,6 +64,14 @@ export function useInventoryData(): InventoryData {
     void load();
   }, [load]);
 
+  // تب‌های دیگر (ثبت تراکنش/رسید در تب دوم) → بازخوانی خودکار همین صفحه
+  useDataChanged(
+    useCallback(() => {
+      void load();
+    }, [load]),
+    ["quotes", "inventory"],
+  );
+
   const scopedWarehouses = useMemo(
     () =>
       user?.role === "admin" || user?.role === "procurement_manager"