feat: Implement core API endpoints, database schema, ActivityPub federation, and initial user interface for the application.

src/db/index.ts

@@ -0,0 +1,17 @@
+import { drizzle } from 'drizzle-orm/neon-http';
+import { neon } from '@neondatabase/serverless';
+import * as schema from './schema';
+
+// Create the Neon client (with fallback for UI testing)
+const sql = process.env.DATABASE_URL
+    ? neon(process.env.DATABASE_URL)
+    : null;
+
+// Create the Drizzle client
+export const db = sql ? drizzle(sql, { schema }) : null;
+
+// Helper to check if DB is available
+export const isDbAvailable = () => db !== null;
+
+// Export schema for use elsewhere
+export * from './schema';