fix(forms): surface validation and recover schema drift

packages/db/test/db.test.ts

@@ -161,6 +161,24 @@ test("comment-only migrations are recorded without executing empty SQL", async (
   await db.close();
 });
 
+test("add-column migrations recover when the column exists but the migration record does not", async () => {
+  const db = createDb(sqlite());
+  await db.exec("CREATE TABLE otp_challenges (id TEXT PRIMARY KEY, purpose TEXT NOT NULL)");
+  const migrations = [
+    {
+      name: "0002_otp_purpose",
+      up: "ALTER TABLE otp_challenges ADD COLUMN purpose TEXT NOT NULL DEFAULT 'verification';",
+      down: "ALTER TABLE otp_challenges DROP COLUMN purpose;",
+    },
+  ];
+
+  expect(await applyMigrations(db, migrations)).toEqual(["0002_otp_purpose"]);
+  expect(await appliedMigrations(db)).toContain("0002_otp_purpose");
+  const columns = await db.all<{ name: string }>("PRAGMA table_info(otp_challenges)");
+  expect(columns.filter(({ name }) => name === "purpose")).toHaveLength(1);
+  await db.close();
+});
+
 test("migration dry-run plans changes without applying schema and honors cancellation", async () => {
   const db = createDb(sqlite());
   const migrations = [