feat(web): 审稿改稿闭环——一键采纳/AI改写/正文高亮定位编辑/伏笔确认/草稿自动保存/章节目录

- 冲突「采纳改法」：有补丁瞬时改入终稿并选中；无补丁但可定位则采纳时调 AI（refiner）重写该段套入；定位不到提示手改
- 正文改为行内高亮叠层编辑器（与页面同底色、随内容增高、无滚动条），点冲突卡/锚点整页滚到并选中+闪烁
- 仅对可在正文定位的冲突显示「跳转」/锚点；locate 支持从 where 引号抽原文，杜绝定位失败刷屏
- 伏笔建议卡：新埋一键登记（预填表单）/ 疑似回收一键标记 CLOSED（复用现有端点）
- 审稿页草稿自动保存（防抖 PUT /draft），与「验收本章」解耦，刷新不丢
- 写作路由带章号 ?chapter=N + 验收成功面板/大纲页「写下一章」入口；写作目录从大纲列出全部章节

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

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

@@ -0,0 +1,54 @@
+import { describe, expect, it } from "vitest";
+
+import { extractDraftQuotes, locateInDraft } from "./locate";
+
+const TEXT = "第一段没问题。\n\n他乘坐迈巴赫扬长而去，留下一地尘土。\n\n结尾。";
+
+describe("locateInDraft", () => {
+  it("locates the exact original fragment", () => {
+    const loc = locateInDraft(TEXT, { original: "迈巴赫", where: "第2段" });
+    expect(loc).not.toBeNull();
+    expect(TEXT.slice(loc!.start, loc!.end)).toBe("迈巴赫");
+  });
+
+  it("falls back to the paragraph snippet when no original", () => {
+    const loc = locateInDraft(TEXT, { original: null, where: "第2段" });
+    expect(loc).not.toBeNull();
+    expect(TEXT.slice(loc!.start, loc!.end)).toBe(
+      "他乘坐迈巴赫扬长而去，留下一地尘土。",
+    );
+  });
+
+  it("returns null when original is absent from text and no paragraph hint", () => {
+    expect(
+      locateInDraft(TEXT, { original: "保时捷", where: "无段号" }),
+    ).toBeNull();
+  });
+
+  it("returns null when the snippet paragraph is out of range", () => {
+    expect(locateInDraft(TEXT, { original: null, where: "第9段" })).toBeNull();
+  });
+
+  it("locates via quoted draft text inside where (no original, no 段号)", () => {
+    // 真实形态：where = 草稿中写"<草稿原文>"，引号内即正文精确子串。
+    const loc = locateInDraft(TEXT, {
+      original: null,
+      where: '草稿中写"迈巴赫扬长而去"',
+    });
+    expect(loc).not.toBeNull();
+    expect(TEXT.slice(loc!.start, loc!.end)).toBe("迈巴赫扬长而去");
+  });
+});
+
+describe("extractDraftQuotes", () => {
+  it("extracts quoted spans (multiple quote styles) longest-first, deduped", () => {
+    expect(extractDraftQuotes('草稿中写"长一些的原文"，又如「短的」')).toEqual([
+      "长一些的原文",
+      "短的",
+    ]);
+  });
+
+  it("returns empty when there are no quotes", () => {
+    expect(extractDraftQuotes("第3段，主角忽然示弱")).toEqual([]);
+  });
+});