REFACTOR(repo): simplify project structure

- Move services/nextjs to nextjs/
- Move deploy/docker/Dockerfile.prod to Dockerfile
- Add GitHub Actions workflows (ci.yml, build.yml)
- Remove deploy/, services/, scripts/ folders

nextjs/app/api/templates/route.ts

@@ -0,0 +1,105 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { prisma } from '@/shared/lib/prisma';
+import { withAuth } from '@/shared/lib/middleware';
+
+async function createTemplate(request: NextRequest, userId: string) {
+  try {
+    const { name, description, category, title, content } = await request.json();
+
+    if (!name || !title || !content) {
+      return NextResponse.json(
+        { error: 'Template name, title, and content are required' }, 
+        { status: 400 }
+      );
+    }
+
+    // Verify user exists in database
+    const user = await prisma.user.findUnique({
+      where: { id: userId }
+    });
+
+    if (!user) {
+      return NextResponse.json(
+        { error: 'User not found' }, 
+        { status: 404 }
+      );
+    }
+
+    // Save template to database (always private to the user)
+    const template = await prisma.template.create({
+      data: {
+        name,
+        description: description || '',
+        category: category || 'General',
+        title,
+        content,
+        isPublic: false, // Always private
+        userId,
+      },
+    });
+
+    console.log('Template created:', template);
+
+    return NextResponse.json({
+      success: true,
+      template,
+      message: 'Template created successfully'
+    });
+  } catch (error) {
+    console.error('Error creating template:', error);
+    return NextResponse.json(
+      { error: 'Failed to create template' }, 
+      { status: 500 }
+    );
+  }
+}
+
+export const POST = withAuth(createTemplate);
+
+async function getTemplates(request: NextRequest, userId: string) {
+  try {
+    // Verify user exists in database
+    const user = await prisma.user.findUnique({
+      where: { id: userId }
+    });
+
+    if (!user) {
+      return NextResponse.json(
+        { error: 'User not found' }, 
+        { status: 404 }
+      );
+    }
+
+    // Fetch only user's own templates
+    const templates = await prisma.template.findMany({
+      where: {
+        userId // Only user's own templates
+      },
+      orderBy: {
+        createdAt: 'desc'
+      },
+      select: {
+        id: true,
+        name: true,
+        description: true,
+        category: true,
+        title: true,
+        content: true,
+        isPublic: true,
+        createdAt: true,
+        updatedAt: true,
+        userId: true,
+      }
+    });
+
+    return NextResponse.json({ templates });
+  } catch (error) {
+    console.error('Error fetching templates:', error);
+    return NextResponse.json(
+      { error: 'Failed to fetch templates' }, 
+      { status: 500 }
+    );
+  }
+}
+
+export const GET = withAuth(getTemplates);