fix: address ui review follow-ups

apps/web/lib/review/chapterNav.test.ts

@@ -0,0 +1,45 @@
+import { describe, expect, it } from "vitest";
+
+import { reviewChapterHref, reviewChapterOptions } from "./chapterNav";
+import type { ChapterEntry } from "@/lib/workbench/chapter";
+
+describe("reviewChapterHref", () => {
+  it("builds the review route for a chapter number", () => {
+    expect(reviewChapterHref("proj-1", 3)).toBe(
+      "/projects/proj-1/review?chapter=3",
+    );
+  });
+
+  it("always targets the review page (not write)", () => {
+    expect(reviewChapterHref("p", 1)).toContain("/review?chapter=1");
+  });
+});
+
+describe("reviewChapterOptions", () => {
+  const chapters: ChapterEntry[] = [
+    { no: 1, title: "开篇" },
+    { no: 2 },
+    { no: 3, title: "转折" },
+  ];
+
+  it("merges outline chapters with the current chapter, sorted ascending", () => {
+    const opts = reviewChapterOptions(chapters, 2);
+    expect(opts.map((o) => o.no)).toEqual([1, 2, 3]);
+  });
+
+  it("includes the current chapter even when it is outside the outline", () => {
+    const opts = reviewChapterOptions(chapters, 9);
+    expect(opts.map((o) => o.no)).toEqual([1, 2, 3, 9]);
+  });
+
+  it("labels each option with chapter number and optional title", () => {
+    const opts = reviewChapterOptions(chapters, 1);
+    expect(opts[0]).toEqual({ no: 1, label: "第 1 章 · 开篇" });
+    expect(opts[1]).toEqual({ no: 2, label: "第 2 章" });
+  });
+
+  it("returns just the current chapter when there is no outline", () => {
+    const opts = reviewChapterOptions([], 4);
+    expect(opts).toEqual([{ no: 4, label: "第 4 章" }]);
+  });
+});

apps/web/lib/review/chapterNav.ts

@@ -0,0 +1,23 @@
+import type { ChapterEntry } from "@/lib/workbench/chapter";
+import { buildChapterEntries } from "@/lib/workbench/chapter";
+
+export interface ReviewChapterOption {
+  no: number;
+  label: string;
+}
+
+export function reviewChapterHref(projectId: string, chapterNo: number): string {
+  return `/projects/${projectId}/review?chapter=${chapterNo}`;
+}
+
+export function reviewChapterOptions(
+  chapters: readonly ChapterEntry[],
+  currentChapterNo: number,
+): ReviewChapterOption[] {
+  return buildChapterEntries(chapters, currentChapterNo).map((chapter) => ({
+    no: chapter.no,
+    label: chapter.title
+      ? `第 ${chapter.no} 章 · ${chapter.title}`
+      : `第 ${chapter.no} 章`,
+  }));
+}