feat(admin) : persist drafts and add constellation conditions

lib/editor/local-draft.test.ts

@@ -0,0 +1,27 @@
+import { describe, expect, it } from "vitest";
+
+import { adminDraftKey, parseLocalDraft, serializeLocalDraft } from "./local-draft";
+
+describe("local admin drafts", () => {
+  it("isolates drafts by guide and section", () => {
+    expect(adminDraftKey("guide-1", "team")).toBe("buzz-sheet:admin-draft:guide-1:team");
+    expect(adminDraftKey("guide-1", "weapon")).not.toBe(adminDraftKey("guide-1", "team"));
+    expect(adminDraftKey("guide-2", "team")).not.toBe(adminDraftKey("guide-1", "team"));
+  });
+
+  it("round trips a versioned draft", () => {
+    const serialized = serializeLocalDraft({ title: "Recovered team" }, 7);
+    const parsed = parseLocalDraft(serialized, (value) => {
+      if (!value || typeof value !== "object" || typeof (value as { title?: unknown }).title !== "string") return null;
+      return value as { title: string };
+    });
+    expect(parsed).toMatchObject({ schemaVersion: 1, serverVersion: 7, draft: { title: "Recovered team" } });
+  });
+
+  it("rejects corrupt, incompatible, and invalid drafts", () => {
+    const parse = (value: unknown) => typeof value === "string" ? value : null;
+    expect(parseLocalDraft("not-json", parse)).toBeNull();
+    expect(parseLocalDraft(JSON.stringify({ schemaVersion: 2, serverVersion: 1, updatedAt: "now", draft: "x" }), parse)).toBeNull();
+    expect(parseLocalDraft(JSON.stringify({ schemaVersion: 1, serverVersion: 1, updatedAt: "now", draft: 5 }), parse)).toBeNull();
+  });
+});