Use ordered SQLite migrations (Refs #75)

src/lib/server/db/migrate.ts

@@ -1,9 +1,7 @@
 import { db } from './index.js';
 
-// The heavy lifting is idempotent DDL inside schema.sql, which db() runs on
-// first handle. This module exists as an explicit hook for future migrations
-// (numbered .sql files applied via a schema_version row) and to be called
-// from hooks.server.ts so boot-time failures surface early.
+// Called from hooks.server.ts so startup fails before workers or requests run.
+// db() applies the ordered migrations.ts list using PRAGMA user_version.
 export function migrate(): void {
-    db().prepare('SELECT 1').get();
+    db();
 }