feat(w3): add continuous read mode and Wave 3 plan

Introduce ReadModeOverlay with device width and font theme persistence, sidebar and volume menu entry, plus E2E-READ-01 through 03.

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

docs/superpowers/plans/2026-07-08-bilin-w3-export-read.md

@@ -0,0 +1,137 @@
+# 笔临 Wave 3 导出阅读 Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** 交付 v1.4.0：导出矩阵（txt/md/docx/pdf）、连续阅读模式、驾驶舱补全、专注环境音。
+
+**Architecture:** `ExportMatrixService` 扩展 `ExportService` 模式；docx 用 `docx` 库；pdf 用 Electron `printToPDF` + HTML 模板；`ReadModeOverlay` 虚拟 3 章 + scroll-snap；阅读偏好写入 `GlobalSettings`。
+
+**Tech Stack:** Electron 36、docx、TypeScript、Vitest、Playwright
+
+**Spec:** `docs/superpowers/specs/2026-07-08-bilin-master-completion-design.md` §7
+
+**Master Program:** Wave 3/5 → v1.4.0
+
+---
+
+## File Map
+
+| 文件 | 职责 |
+|------|------|
+| `src/shared/export-matrix.ts` | ExportFormat/Scope/Options 类型 |
+| `src/main/services/export-matrix.service.ts` | txt/md/docx/pdf 导出 |
+| `src/main/export-matrix-bootstrap.ts` | 延迟加载 docx，注册 IPC |
+| `src/main/ipc/handlers/export-matrix.handler.ts` | EXPORT_MATRIX_* |
+| `src/renderer/components/read/ReadModeOverlay.tsx` | 连续阅读全屏 |
+| `src/renderer/stores/useReadModeStore.ts` | 阅读模式状态 |
+| `src/renderer/components/export/ExportModal.tsx` | 导出矩阵 UI |
+| `src/renderer/components/cockpit/CockpitModal.tsx` | 今日大纲任务 |
+| `src/renderer/components/focus/FocusModeOverlay.tsx` | 环境音效 |
+| `e2e/read-mode.spec.ts` | E2E-READ-01~03 |
+| `e2e/export-matrix.spec.ts` | E2E-PDF-01 等 |
+
+---
+
+## Task 1: 类型 + 阅读偏好
+
+**Files:**
+- Create: `src/shared/export-matrix.ts`
+- Modify: `src/shared/types.ts` — `readModeFontTheme`、`readModeDeviceWidth`、`enableFocusAmbientSound`
+
+- [x] **Step 1:** export-matrix 类型定义
+- [x] **Step 2:** GlobalSettings 阅读/专注字段
+- [x] **Step 3:** settings store 默认值
+
+---
+
+## Task 2: 连续阅读模式
+
+**Files:**
+- Create: `src/renderer/stores/useReadModeStore.ts`
+- Create: `src/renderer/components/read/ReadModeOverlay.tsx`
+- Modify: `EditorLayout.tsx`、`VolumeContextMenu.tsx`、`App.tsx`、`layout.css`
+
+- [x] **Step 1:** ReadModeOverlay 全屏 + 虚拟 3 章 + scroll-snap
+- [x] **Step 2:** 设备宽度 / 字体主题切换与持久化
+- [x] **Step 3:** 章节侧栏 + 分卷右键入口
+- [x] **Step 4:** i18n `readMode.*`
+
+---
+
+## Task 3: ExportMatrixService txt/md
+
+**Files:**
+- Create: `src/main/services/export-matrix.service.ts`
+- Create: `src/main/ipc/handlers/export-matrix.handler.ts`
+
+- [ ] **Step 1:** 章/卷/全书范围解析
+- [ ] **Step 2:** txt/md 导出 + 选项（批注/AI 标注）
+- [ ] **Step 3:** UT 章级 txt 导出
+
+---
+
+## Task 4: docx 导出
+
+**Files:**
+- Modify: `package.json` — `docx`
+- Modify: `export-matrix.service.ts`
+
+- [ ] **Step 1:** docx 目录与章节结构
+- [ ] **Step 2:** IT-DOCX-01 含目录
+
+---
+
+## Task 5: pdf 导出
+
+**Files:**
+- Modify: `export-matrix.service.ts`
+
+- [ ] **Step 1:** HTML 模板 + printToPDF
+- [ ] **Step 2:** A4 页眉页脚
+- [ ] **Step 3:** E2E mock 路径 BILIN_E2E_PDF_SAVE
+
+---
+
+## Task 6: ExportModal 矩阵 UI
+
+**Files:**
+- Modify: `ExportModal.tsx`、`preload`、`ipc-channels`
+
+- [ ] **Step 1:** 格式/范围/选项选择
+- [ ] **Step 2:** 保存对话框与 toast
+
+---
+
+## Task 7: 驾驶舱 + 专注环境音
+
+**Files:**
+- Modify: `CockpitModal.tsx`
+- Modify: `FocusModeOverlay.tsx`、`SettingsPage.tsx`
+
+- [ ] **Step 1:** 今日大纲任务 Top 5（pending + expectedWordCount）
+- [ ] **Step 2:** 专注模式环境音开关与播放
+
+---
+
+## Task 8: E2E + v1.4.0
+
+**Files:**
+- Create: `e2e/read-mode.spec.ts`、`e2e/export-matrix.spec.ts`
+- Modify: `package.json`、`README.md`、`SettingsPage.tsx`
+
+- [x] **Step 1:** E2E-READ-01~03
+- [ ] **Step 2:** E2E-PDF-01
+- [ ] **Step 3:** 全量 test + 相关 E2E
+- [ ] **Step 4:** 版本 **v1.4.0**
+- [ ] **Step 5:** 勾选本 plan 全部 checkbox
+
+---
+
+## Plan 自检
+
+| Spec §7 要求 | Task |
+|-------------|------|
+| ExportMatrix 四格式 | Task 3–6 |
+| ReadModeOverlay | Task 2 |
+| 驾驶舱大纲任务 | Task 7 |
+| E2E-READ / E2E-PDF | Task 8 |