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/server/context.ts

@@ -0,0 +1,24 @@
+import type { inferAsyncReturnType } from '@trpc/server'
+import type { FetchCreateContextFnOptions } from '@trpc/server/adapters/fetch'
+import { auth } from '@/lib/auth'
+import { prisma } from '@/lib/prisma'
+
+/**
+ * Create tRPC context for each request
+ */
+export async function createContext(opts?: FetchCreateContextFnOptions) {
+  const session = await auth()
+
+  // Extract IP and user agent from headers
+  const ip = opts?.req.headers.get('x-forwarded-for')?.split(',')[0]?.trim() ?? 'unknown'
+  const userAgent = opts?.req.headers.get('user-agent') ?? 'unknown'
+
+  return {
+    session,
+    prisma,
+    ip,
+    userAgent,
+  }
+}
+
+export type Context = inferAsyncReturnType<typeof createContext>