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/notes/route.ts

@@ -0,0 +1,162 @@
+import { NextRequest, NextResponse } from 'next/server'
+import prisma from '@/lib/prisma'
+import { CheckItem } from '@/lib/types'
+
+// Helper to parse JSON fields
+function parseNote(dbNote: any) {
+  return {
+    ...dbNote,
+    checkItems: dbNote.checkItems ? JSON.parse(dbNote.checkItems) : null,
+    labels: dbNote.labels ? JSON.parse(dbNote.labels) : null,
+    images: dbNote.images ? JSON.parse(dbNote.images) : null,
+  }
+}
+
+// GET /api/notes - Get all notes
+export async function GET(request: NextRequest) {
+  try {
+    const searchParams = request.nextUrl.searchParams
+    const includeArchived = searchParams.get('archived') === 'true'
+    const search = searchParams.get('search')
+
+    let where: any = {}
+    
+    if (!includeArchived) {
+      where.isArchived = false
+    }
+
+    if (search) {
+      where.OR = [
+        { title: { contains: search, mode: 'insensitive' } },
+        { content: { contains: search, mode: 'insensitive' } }
+      ]
+    }
+
+    const notes = await prisma.note.findMany({
+      where,
+      orderBy: [
+        { isPinned: 'desc' },
+        { order: 'asc' },
+        { updatedAt: 'desc' }
+      ]
+    })
+
+    return NextResponse.json({
+      success: true,
+      data: notes.map(parseNote)
+    })
+  } catch (error) {
+    return NextResponse.json(
+      { success: false, error: 'Failed to fetch notes' },
+      { status: 500 }
+    )
+  }
+}
+
+// POST /api/notes - Create a new note
+export async function POST(request: NextRequest) {
+  try {
+    const body = await request.json()
+    const { title, content, color, type, checkItems, labels, images } = body
+
+    if (!content && type !== 'checklist') {
+      return NextResponse.json(
+        { success: false, error: 'Content is required' },
+        { status: 400 }
+      )
+    }
+
+    const note = await prisma.note.create({
+      data: {
+        title: title || null,
+        content: content || '',
+        color: color || 'default',
+        type: type || 'text',
+        checkItems: checkItems ? JSON.stringify(checkItems) : null,
+        labels: labels ? JSON.stringify(labels) : null,
+        images: images ? JSON.stringify(images) : null,
+      }
+    })
+
+    return NextResponse.json({
+      success: true,
+      data: parseNote(note)
+    }, { status: 201 })
+  } catch (error) {
+    return NextResponse.json(
+      { success: false, error: 'Failed to create note' },
+      { status: 500 }
+    )
+  }
+}
+
+// PUT /api/notes - Update an existing note
+export async function PUT(request: NextRequest) {
+  try {
+    const body = await request.json()
+    const { id, title, content, color, type, checkItems, labels, isPinned, isArchived, images } = body
+
+    if (!id) {
+      return NextResponse.json(
+        { success: false, error: 'Note ID is required' },
+        { status: 400 }
+      )
+    }
+
+    const updateData: any = {}
+    
+    if (title !== undefined) updateData.title = title
+    if (content !== undefined) updateData.content = content
+    if (color !== undefined) updateData.color = color
+    if (type !== undefined) updateData.type = type
+    if (checkItems !== undefined) updateData.checkItems = checkItems ? JSON.stringify(checkItems) : null
+    if (labels !== undefined) updateData.labels = labels ? JSON.stringify(labels) : null
+    if (isPinned !== undefined) updateData.isPinned = isPinned
+    if (isArchived !== undefined) updateData.isArchived = isArchived
+    if (images !== undefined) updateData.images = images ? JSON.stringify(images) : null
+
+    const note = await prisma.note.update({
+      where: { id },
+      data: updateData
+    })
+
+    return NextResponse.json({
+      success: true,
+      data: parseNote(note)
+    })
+  } catch (error) {
+    return NextResponse.json(
+      { success: false, error: 'Failed to update note' },
+      { status: 500 }
+    )
+  }
+}
+
+// DELETE /api/notes?id=xxx - Delete a note
+export async function DELETE(request: NextRequest) {
+  try {
+    const searchParams = request.nextUrl.searchParams
+    const id = searchParams.get('id')
+
+    if (!id) {
+      return NextResponse.json(
+        { success: false, error: 'Note ID is required' },
+        { status: 400 }
+      )
+    }
+
+    await prisma.note.delete({
+      where: { id }
+    })
+
+    return NextResponse.json({
+      success: true,
+      message: 'Note deleted successfully'
+    })
+  } catch (error) {
+    return NextResponse.json(
+      { success: false, error: 'Failed to delete note' },
+      { status: 500 }
+    )
+  }
+}