Initial commit: MOPC platform with Docker deployment setup

Full Next.js 15 platform with tRPC, Prisma, PostgreSQL, NextAuth.
Includes production Dockerfile (multi-stage, port 7600), docker-compose
with registry-based image pull, Gitea Actions CI workflow, nginx config
for portal.monaco-opc.com, deployment scripts, and DEPLOYMENT.md guide.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/lib/utils.ts

@@ -0,0 +1,61 @@
+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 {
+  return new Intl.DateTimeFormat('en-US', {
+    dateStyle: 'medium',
+    timeStyle: 'short',
+  }).format(new Date(date))
+}
+
+export function formatDateOnly(date: Date | string): string {
+  return new Intl.DateTimeFormat('en-US', {
+    dateStyle: 'long',
+  }).format(new Date(date))
+}
+
+export function truncate(str: string, length: number): string {
+  if (str.length <= length) return str
+  return str.slice(0, length) + '...'
+}
+
+export function getInitials(name: string): string {
+  return name
+    .split(' ')
+    .map((n) => n[0])
+    .join('')
+    .toUpperCase()
+    .slice(0, 2)
+}
+
+export function slugify(str: string): string {
+  return str
+    .toLowerCase()
+    .replace(/[^\w\s-]/g, '')
+    .replace(/[\s_-]+/g, '-')
+    .replace(/^-+|-+$/g, '')
+}
+
+export function formatFileSize(bytes: number): string {
+  if (bytes === 0) return '0 Bytes'
+  const k = 1024
+  const sizes = ['Bytes', 'KB', 'MB', 'GB']
+  const i = Math.floor(Math.log(bytes) / Math.log(k))
+  return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i]
+}
+
+export function formatEnumLabel(value: string): string {
+  return value
+    .replace(/_/g, ' ')
+    .replace(/\b\w/g, (c) => c.toUpperCase())
+}
+
+export function daysUntil(date: Date | string): number {
+  const target = new Date(date)
+  const now = new Date()
+  return Math.ceil((target.getTime() - now.getTime()) / (1000 * 60 * 60 * 24))
+}