feat: add validation for minimum length on various fields and update type definitions

frontend/src/api/generated/model/boardOnboardingConfirm.ts

@@ -0,0 +1,14 @@
+/**
+ * Generated by orval v8.2.0 🍺
+ * Do not edit manually.
+ * Mission Control API
+ * OpenAPI spec version: 0.1.0
+ */
+import type { BoardOnboardingConfirmSuccessMetrics } from "./boardOnboardingConfirmSuccessMetrics";
+
+export interface BoardOnboardingConfirm {
+  board_type: string;
+  objective?: string | null;
+  success_metrics?: BoardOnboardingConfirmSuccessMetrics;
+  target_date?: string | null;
+}