feat: rename keep-notes to memento-note, migrate to PostgreSQL, fix MCP bugs

- Rename directory keep-notes -> memento-note with all code references
- Prisma: SQLite -> PostgreSQL (both app and MCP server schemas)
- Sync MCP schema with main app (add missing fields, relations, indexes)
- Delete 17 SQLite migrations (clean slate for PostgreSQL)
- Remove SQLite dependencies (@libsql/client, better-sqlite3, etc.)
- Fix MCP server: hardcoded Windows DB paths -> DATABASE_URL env var
- Fix MCP server: .dockerignore excluded index-sse.js (SSE mode broken)
- MCP Dockerfile: node:20 -> node:22
- Docker Compose: add postgres service, remove SQLite volume
- Generate favicon.ico, icon-192.png, icon-512.png, apple-icon.png
- Update layout.tsx icons and manifest.json for PNG icons
- Update all .env files for PostgreSQL
- Rewrite README.md with updated sections
- Remove mcp-server/node_modules and prisma/client-generated from git tracking

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

memento-note/app/api/notebooks/[id]/route.ts

@@ -0,0 +1,133 @@
+import { NextRequest, NextResponse } from 'next/server'
+import prisma from '@/lib/prisma'
+import { auth } from '@/auth'
+import { revalidatePath } from 'next/cache'
+
+// PATCH /api/notebooks/[id] - Update a notebook
+export async function PATCH(
+  request: NextRequest,
+  { params }: { params: Promise<{ id: string }> }
+) {
+  const session = await auth()
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+  }
+
+  try {
+    const { id } = await params
+    const body = await request.json()
+    const { name, icon, color, order } = body
+
+    // Verify ownership
+    const existing = await prisma.notebook.findUnique({
+      where: { id },
+      select: { userId: true }
+    })
+
+    if (!existing) {
+      return NextResponse.json(
+        { success: false, error: 'Notebook not found' },
+        { status: 404 }
+      )
+    }
+
+    if (existing.userId !== session.user.id) {
+      return NextResponse.json(
+        { success: false, error: 'Forbidden' },
+        { status: 403 }
+      )
+    }
+
+    // Build update data
+    const updateData: any = {}
+    if (name !== undefined) updateData.name = name.trim()
+    if (icon !== undefined) updateData.icon = icon
+    if (color !== undefined) updateData.color = color
+    if (order !== undefined) updateData.order = order
+
+    // Update notebook
+    const notebook = await prisma.notebook.update({
+      where: { id },
+      data: updateData,
+      include: {
+        labels: true,
+        _count: {
+          select: { notes: true }
+        }
+      }
+    })
+
+    revalidatePath('/')
+
+    return NextResponse.json({
+      success: true,
+      ...notebook,
+      notesCount: notebook._count.notes
+    })
+  } catch (error) {
+    return NextResponse.json(
+      { success: false, error: 'Failed to update notebook' },
+      { status: 500 }
+    )
+  }
+}
+
+// DELETE /api/notebooks/[id] - Delete a notebook
+export async function DELETE(
+  request: NextRequest,
+  { params }: { params: Promise<{ id: string }> }
+) {
+  const session = await auth()
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+  }
+
+  try {
+    const { id } = await params
+
+    // Verify ownership and get notebook info
+    const notebook = await prisma.notebook.findUnique({
+      where: { id },
+      select: {
+        userId: true,
+        name: true,
+        _count: {
+          select: { notes: true, labels: true }
+        }
+      }
+    })
+
+    if (!notebook) {
+      return NextResponse.json(
+        { success: false, error: 'Notebook not found' },
+        { status: 404 }
+      )
+    }
+
+    if (notebook.userId !== session.user.id) {
+      return NextResponse.json(
+        { success: false, error: 'Forbidden' },
+        { status: 403 }
+      )
+    }
+
+    // Delete notebook (cascade will handle labels and notes)
+    await prisma.notebook.delete({
+      where: { id }
+    })
+
+    revalidatePath('/')
+
+    return NextResponse.json({
+      success: true,
+      message: `Notebook "${notebook.name}" deleted`,
+      notesCount: notebook._count.notes,
+      labelsCount: notebook._count.labels
+    })
+  } catch (error) {
+    return NextResponse.json(
+      { success: false, error: 'Failed to delete notebook' },
+      { status: 500 }
+    )
+  }
+}