Started new initial React frontend, aadditinal changes for Django to run REST.

frontend/src/lib/utils.ts

@@ -0,0 +1,29 @@
+import { type ClassValue, clsx } from "clsx"
+import { twMerge } from "tailwind-merge"
+
+export function cn(...inputs: ClassValue[]) {
+  return twMerge(clsx(inputs))
+}
+
+export function formatDate(date: Date | string): string {
+  const d = typeof date === 'string' ? new Date(date) : date
+  return d.toLocaleDateString() + ' ' + d.toLocaleTimeString()
+}
+
+export function formatRelativeTime(date: Date | string): string {
+  const d = typeof date === 'string' ? new Date(date) : date
+  const now = new Date()
+  const diff = now.getTime() - d.getTime()
+  
+  const seconds = Math.floor(diff / 1000)
+  const minutes = Math.floor(seconds / 60)
+  const hours = Math.floor(minutes / 60)
+  const days = Math.floor(hours / 24)
+  
+  if (seconds < 60) return `${seconds}s ago`
+  if (minutes < 60) return `${minutes}m ago`
+  if (hours < 24) return `${hours}h ago`
+  if (days < 30) return `${days}d ago`
+  
+  return formatDate(d)
+}