feat: add dirty-dismiss and footer hint settings

src/ui/dismiss-guard.ts

@@ -0,0 +1,26 @@
+import type { AskConfig } from "../config/schema.ts";
+import type { AskState } from "../types.ts";
+
+export const DIRTY_DISMISS_NOTICE =
+	"Unsaved ask answers or drafts. Press cancel/dismiss again to discard.";
+
+export function shouldConfirmDirtyDismiss(args: {
+	config: AskConfig;
+	state: AskState;
+	editingText?: string;
+}): boolean {
+	if (!args.config.behaviour.confirmDismissWhenDirty) {
+		return false;
+	}
+	return hasDirtyFlowState(args.state, args.editingText ?? "");
+}
+
+export function hasDirtyFlowState(state: AskState, editingText = ""): boolean {
+	return Object.keys(state.answers).length > 0 || editingText.length > 0;
+}
+
+export function shouldDiscardAfterConfirmation(
+	confirmationPending: boolean
+): boolean {
+	return confirmationPending;
+}