feat: global block library tree + grouping tool — 19 files, 588 tests green

backend/src/server.ts

@@ -66,6 +66,7 @@ export async function createServer(opts: ServerOptions) {
   const { registerAIRoutes } = await import('./routes/ai.js');
   const { registerNotificationRoutes } = await import('./routes/notifications.js');
   const { registerShareRoutes } = await import('./routes/shares.js');
+  const { registerGlobalBlockRoutes } = await import('./routes/globalBlocks.js');
 
   const authService = new AuthService(opts.db);
 
@@ -100,6 +101,7 @@ export async function createServer(opts: ServerOptions) {
   registerAIRoutes(fastify, authService);
   registerNotificationRoutes(fastify, opts.db, authService);
   registerShareRoutes(fastify, opts.db, authService);
+  registerGlobalBlockRoutes(fastify, opts.db, authService);
 
   // Yjs collaboration WebSocket
   registerYjsWebSocket(fastify, authService);