feat: Add real-time warehouse statistics with daily changes for fulfillment centers

- Added new GraphQL query `GET_FULFILLMENT_WAREHOUSE_STATS` to fetch warehouse statistics with daily changes
- Created comprehensive GraphQL resolver `fulfillmentWarehouseStats` that calculates:
  * Current quantities for products, goods, defects, pvzReturns, fulfillmentSupplies, sellerSupplies
  * Daily changes (absolute numbers) based on deliveries in the last 24 hours
  * Percentage changes for all categories
- Updated fulfillment warehouse dashboard to use real GraphQL data instead of static calculations
- Added polling every 60 seconds to keep statistics up-to-date
- Enhanced StatCard component to display accurate percentage and absolute changes
- Statistics now show real supply deliveries and changes relative to the previous day

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/graphql/queries.ts

@@ -1047,3 +1047,41 @@ export const GET_SELLER_STATS_CACHE = gql`
     }
   }
 `;
+
+// Запрос для получения статистики склада фулфилмента с изменениями за сутки
+export const GET_FULFILLMENT_WAREHOUSE_STATS = gql`
+  query GetFulfillmentWarehouseStats {
+    fulfillmentWarehouseStats {
+      products {
+        current
+        change
+        percentChange
+      }
+      goods {
+        current
+        change
+        percentChange
+      }
+      defects {
+        current
+        change
+        percentChange
+      }
+      pvzReturns {
+        current
+        change
+        percentChange
+      }
+      fulfillmentSupplies {
+        current
+        change
+        percentChange
+      }
+      sellerSupplies {
+        current
+        change
+        percentChange
+      }
+    }
+  }
+`;