feat(api): add stats chart endpoint for admin access with time series data

feat(dayjs): integrate dayjs for date handling and formatting across the application
refactor(routes): update date handling in id-tags, transactions, users, and dashboard routes to use dayjs
style(globals): improve CSS variable definitions for better readability and consistency
deps: add dayjs as a dependency for date manipulation

apps/csms/src/routes/charge-points.ts

@@ -1,5 +1,6 @@
 import { Hono } from "hono";
 import { desc, eq, sql } from "drizzle-orm";
+import dayjs from "dayjs";
 import { useDrizzle } from "@/lib/db.js";
 import { chargePoint, connector } from "@/db/schema.js";
 import type { HonoEnv } from "@/types/hono.ts";
@@ -135,7 +136,7 @@ app.patch("/:id", async (c) => {
     chargePointVendor?: string;
     chargePointModel?: string;
     updatedAt: Date;
-  } = { updatedAt: new Date() };
+  } = { updatedAt: dayjs().toDate() };
 
   if (body.feePerKwh !== undefined) {
     if (!Number.isInteger(body.feePerKwh) || body.feePerKwh < 0) {