Implement KPI daily production feature

- Added a new KPI controller to handle daily production data retrieval.
- Created routes for accessing KPI data, specifically for daily production.
- Developed frontend components for displaying daily production metrics, including charts and summary cards.
- Implemented data fetching logic with date range filtering for production data.
- Ensured proper loading states and error handling in the UI.

This feature is part of TASK:ERP-022.

backend-node/src/routes/kpiRoutes.ts

@@ -0,0 +1,13 @@
+/**
+ * KPI 라우트 — TASK:ERP-022
+ */
+import { Router } from "express";
+import { authenticateToken } from "../middleware/authMiddleware";
+import * as ctrl from "../controllers/kpiController";
+
+const router = Router();
+router.use(authenticateToken);
+
+router.get("/daily-production", ctrl.getDailyProduction);
+
+export default router;