Create flow: session UI + sign out

app/create/hasCreateFlowUserInput.ts

@@ -0,0 +1,27 @@
+import type { CreateFlowState } from "./types";
+
+const IGNORED_KEYS = new Set<string>(["currentStep"]);
+
+function valueIndicatesUserInput(value: unknown): boolean {
+  if (value === undefined || value === null) return false;
+  if (typeof value === "string") return value.trim().length > 0;
+  if (typeof value === "boolean") return value;
+  if (typeof value === "number") return Number.isFinite(value);
+  if (Array.isArray(value)) return value.length > 0;
+  if (typeof value === "object") {
+    return Object.keys(value as object).length > 0;
+  }
+  return false;
+}
+
+/**
+ * True once the user has entered meaningful create-flow data (not only navigation metadata).
+ * Used to show "Save & Exit" vs a plain "Exit" that confirms data loss.
+ */
+export function hasCreateFlowUserInput(state: CreateFlowState): boolean {
+  for (const key of Object.keys(state)) {
+    if (IGNORED_KEYS.has(key)) continue;
+    if (valueIndicatesUserInput(state[key])) return true;
+  }
+  return false;
+}