v3: added a roles/permissions system, added user management tab on user profile

api/db/migrations/0005_drop_is_admin.ts

@@ -0,0 +1,13 @@
+import type { DatabaseSync } from "node:sqlite";
+
+// Drops the legacy is_admin column now that `role` is the single source of
+// truth. Idempotent: skips when the column is already gone (fresh databases
+// created from schema.sql never had it). Must run after 0004 has backfilled.
+export function up(db: DatabaseSync): void {
+  const userCols = db.prepare(`PRAGMA table_info(users);`).all() as {
+    name: string;
+  }[];
+  if (userCols.some((c) => c.name === "is_admin")) {
+    db.exec(`ALTER TABLE users DROP COLUMN is_admin;`);
+  }
+}