npx wrangler d1 create mindmap-db # Add to wrangler.toml: [[d1_databases]] binding = "DB" database_name = "mindmap-db" database_id = "<your-id>"

CREATE TABLE maps ( id TEXT PRIMARY KEY, name TEXT NOT NULL, data TEXT NOT NULL, settings TEXT, updated_at INTEGER DEFAULT (unixepoch()) ); CREATE INDEX idx_maps_updated ON maps(updated_at);

export default { async fetch(request, env) { const url = new URL(request.url); const db = env.DB; if (url.pathname === '/api/maps' && request.method === 'GET') { const r = await db.prepare('SELECT * FROM maps ORDER BY updated_at DESC').all(); return Response.json(r.results); } if (url.pathname === '/api/maps' && request.method === 'PUT') { const { id, name, data, settings } = await request.json(); await db.prepare( 'INSERT OR REPLACE INTO maps (id,name,data,settings,updated_at) VALUES (?,?,?,?,?)' ).bind(id, name, data, settings, Date.now()).run(); return Response.json({ ok: true }); } if (url.pathname.startsWith('/api/maps/') && request.method === 'DELETE') { const id = url.pathname.split('/').pop(); await db.prepare('DELETE FROM maps WHERE id=?').bind(id).run(); return Response.json({ ok: true }); } return new Response('Not found', { status: 404 }); } };

// Replace ORT.db with D1 adapter: ORT.db.adapter = { name: 'd1', endpoint: 'https://your-worker.workers.dev', save: async (id, name, data, settings) => { await fetch(endpoint + '/api/maps', { method: 'PUT', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ id, name, data, settings }) }); }, load: async () => { const r = await fetch(endpoint + '/api/maps'); return r.json(); } };

npx wrangler deploy