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/ocpp/actions/status-notification.ts

@@ -1,4 +1,5 @@
 import { eq } from 'drizzle-orm'
+import dayjs from 'dayjs'
 import { useDrizzle } from '@/lib/db.js'
 import { chargePoint, connector, connectorStatusHistory } from '@/db/schema.js'
 import type {
@@ -54,7 +55,7 @@ export async function handleStatusNotification(
     throw new Error(`ChargePoint not found: ${ctx.chargePointIdentifier}`)
   }
 
-  const statusTimestamp = payload.timestamp ? new Date(payload.timestamp) : new Date()
+  const statusTimestamp = payload.timestamp ? dayjs(payload.timestamp).toDate() : dayjs().toDate()
   const connStatus = payload.status as ConnectorStatus
   const connErrorCode = payload.errorCode as ConnectorErrorCode
 
@@ -81,7 +82,7 @@ export async function handleStatusNotification(
         vendorId: payload.vendorId ?? null,
         vendorErrorCode: payload.vendorErrorCode ?? null,
         lastStatusAt: statusTimestamp,
-        updatedAt: new Date(),
+        updatedAt: dayjs().toDate(),
       },
     })
     .returning({ id: connector.id })