Initial commit: Port Nimara CRM (Layers 0-4)

Full CRM rebuild with Next.js 15, TypeScript, Tailwind, Drizzle ORM,
PostgreSQL, Redis, BullMQ, MinIO, and Socket.io. Includes 461 source
files covering clients, berths, interests/pipeline, documents/EOI,
expenses/invoices, email, notifications, dashboard, admin, and
client portal. CI/CD via Gitea Actions with Docker builds.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/app/api/v1/email/threads/[threadId]/route.ts

@@ -0,0 +1,16 @@
+import { NextResponse } from 'next/server';
+
+import { withAuth, withPermission } from '@/lib/api/helpers';
+import { errorResponse } from '@/lib/errors';
+import { getThread } from '@/lib/services/email-threads.service';
+
+export const GET = withAuth(
+  withPermission('email', 'view', async (_req, ctx, params) => {
+    try {
+      const thread = await getThread(params.threadId!, ctx.portId);
+      return NextResponse.json({ data: thread });
+    } catch (error) {
+      return errorResponse(error);
+    }
+  }),
+);