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

mcp-server/index.js

@@ -9,7 +9,7 @@
  * - Lazy user resolution
  *
  * Environment variables:
- *   DATABASE_URL  - Prisma database URL (default: ../../keep-notes/prisma/dev.db)
+ *   DATABASE_URL  - Prisma database URL (default: ../../memento-note/prisma/dev.db)
  *   USER_ID       - Optional user ID to filter data
  *   APP_BASE_URL  - Optional Next.js app URL for AI features (default: http://localhost:3000)
  *   MCP_LOG_LEVEL - Log level: debug, info, warn, error (default: info)
@@ -17,7 +17,7 @@
 
 import { Server } from '@modelcontextprotocol/sdk/server/index.js';
 import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
-import { PrismaClient } from '../keep-notes/prisma/client-generated/index.js';
+import { PrismaClient } from '../memento-note/prisma/client-generated/index.js';
 import { fileURLToPath } from 'url';
 import { dirname, join } from 'path';
 import { registerTools } from './tools.js';