Give builder fields persistent labels, treat description as optional, and validate save-progress email with a real form.

Name stays required; description is a labelled optional textarea. Email uses native validity and form submit. Drop the dead workshop link and fix a few copy errors.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/unit/createFlowPaths.test.ts

@@ -1,5 +1,6 @@
 import { describe, expect, it } from "vitest";
 import {
+  CREATE_FLOW_COMMUNITY_SAVE_FORM_ID,
   CREATE_FLOW_SYNC_DRAFT_QUERY,
   CREATE_FLOW_SYNC_DRAFT_VALUE,
   CREATE_ROUTES,
@@ -42,4 +43,10 @@ describe("createFlowPaths (CR-92 §2)", () => {
     expect(CREATE_ROUTES.review).toBe("/create/review");
     expect(CREATE_ROUTES.completed).toBe("/create/completed");
   });
+
+  it("exposes a stable form id for the save-progress email step", () => {
+    expect(CREATE_FLOW_COMMUNITY_SAVE_FORM_ID).toBe(
+      "create-flow-community-save",
+    );
+  });
 });

tests/unit/isValidCreateFlowSaveEmail.test.ts

@@ -0,0 +1,21 @@
+import { describe, it, expect } from "vitest";
+import { isValidCreateFlowSaveEmail } from "../../lib/create/isValidCreateFlowSaveEmail";
+
+describe("isValidCreateFlowSaveEmail", () => {
+  it("rejects empty, whitespace, and non-string values", () => {
+    expect(isValidCreateFlowSaveEmail("")).toBe(false);
+    expect(isValidCreateFlowSaveEmail("   ")).toBe(false);
+    expect(isValidCreateFlowSaveEmail(null)).toBe(false);
+    expect(isValidCreateFlowSaveEmail(undefined)).toBe(false);
+  });
+
+  it("rejects values the native email control would reject", () => {
+    expect(isValidCreateFlowSaveEmail("not-an-email")).toBe(false);
+    expect(isValidCreateFlowSaveEmail("user@example.com ")).toBe(false);
+    expect(isValidCreateFlowSaveEmail(" user@example.com")).toBe(false);
+  });
+
+  it("accepts a required type=email value", () => {
+    expect(isValidCreateFlowSaveEmail("user@example.com")).toBe(true);
+  });
+});