chore: clean up repo for public release

- Remove BMAD framework, IDE configs, dev screenshots, test files,
  internal docs, and backup files
- Rename keep-notes/ to memento-note/
- Update all references from keep-notes to memento-note
- Add Apache 2.0 license with Commons Clause (non-commercial restriction)
- Add clean .gitignore and .env.docker.example

memento-note/app/api/notebooks/route.ts

@@ -0,0 +1,104 @@
+import { NextRequest, NextResponse } from 'next/server'
+import prisma from '@/lib/prisma'
+import { auth } from '@/auth'
+import { revalidatePath } from 'next/cache'
+
+const DEFAULT_COLORS = ['#3B82F6', '#8B5CF6', '#EC4899', '#F59E0B', '#10B981', '#06B6D4']
+const DEFAULT_ICONS = ['📁', '📚', '💼', '🎯', '📊', '🎨', '💡', '🔧']
+
+// GET /api/notebooks - Get all notebooks for current user
+export async function GET(request: NextRequest) {
+  const session = await auth()
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+  }
+
+  try {
+    const notebooks = await prisma.notebook.findMany({
+      where: { userId: session.user.id },
+      include: {
+        labels: {
+          orderBy: { name: 'asc' }
+        },
+        _count: {
+          select: { notes: { where: { isArchived: false } } }
+        }
+      },
+      orderBy: { order: 'asc' }
+    })
+
+    return NextResponse.json({
+      success: true,
+      notebooks: notebooks.map(nb => ({
+        ...nb,
+        notesCount: nb._count.notes
+      }))
+    })
+  } catch (error) {
+    console.error('Error fetching notebooks:', error)
+    return NextResponse.json(
+      { success: false, error: 'Failed to fetch notebooks' },
+      { status: 500 }
+    )
+  }
+}
+
+// POST /api/notebooks - Create a new notebook
+export async function POST(request: NextRequest) {
+  const session = await auth()
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+  }
+
+  try {
+    const body = await request.json()
+    const { name, icon, color } = body
+
+    if (!name || typeof name !== 'string') {
+      return NextResponse.json(
+        { success: false, error: 'Notebook name is required' },
+        { status: 400 }
+      )
+    }
+
+    // Get the highest order value for this user
+    const highestOrder = await prisma.notebook.findFirst({
+      where: { userId: session.user.id },
+      orderBy: { order: 'desc' },
+      select: { order: true }
+    })
+
+    const nextOrder = (highestOrder?.order ?? -1) + 1
+
+    // Create notebook
+    const notebook = await prisma.notebook.create({
+      data: {
+        name: name.trim(),
+        icon: icon || DEFAULT_ICONS[Math.floor(Math.random() * DEFAULT_ICONS.length)],
+        color: color || DEFAULT_COLORS[Math.floor(Math.random() * DEFAULT_COLORS.length)],
+        order: nextOrder,
+        userId: session.user.id
+      },
+      include: {
+        labels: true,
+        _count: {
+          select: { notes: { where: { isArchived: false } } }
+        }
+      }
+    })
+
+    revalidatePath('/')
+
+    return NextResponse.json({
+      success: true,
+      ...notebook,
+      notesCount: notebook._count.notes
+    }, { status: 201 })
+  } catch (error) {
+    console.error('Error creating notebook:', error)
+    return NextResponse.json(
+      { success: false, error: 'Failed to create notebook' },
+      { status: 500 }
+    )
+  }
+}