Initial commit — AI-powered coding tutor (Professor)

Next.js 16, React 19, Monaco editor, Anthropic SDK, multi-provider AI,
Wandbox Python execution, iframe HTML preview, SQLite auth + session persistence.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

drizzle.config.ts

@@ -0,0 +1,10 @@
+import type { Config } from 'drizzle-kit';
+
+export default {
+  schema: './db/schema.ts',
+  out: './db/migrations',
+  dialect: 'sqlite',
+  dbCredentials: {
+    url: 'professor.db',
+  },
+} satisfies Config;