docs: add table of contents with anchor links to READMEs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

README.en.md

@@ -10,6 +10,20 @@ A **locally runnable version** repaired from the leaked Claude Code source, with
   <img src="docs/00runtime.png" alt="Runtime screenshot" width="800">
 </p>
 
+## Table of Contents
+
+- [Features](#features)
+- [Architecture Overview](#architecture-overview)
+- [Quick Start](#quick-start)
+- [Environment Variables](#environment-variables)
+- [Fallback Mode](#fallback-mode)
+- [FAQ](#faq)
+- [Fixes Compared with the Original Leaked Source](#fixes-compared-with-the-original-leaked-source)
+- [Project Structure](#project-structure)
+- [Tech Stack](#tech-stack)
+
+---
+
 ## Features
 
 - Full Ink TUI experience (matching the official Claude Code interface)

README.md

@@ -10,6 +10,20 @@
   <img src="docs/00runtime.png" alt="运行截图" width="800">
 </p>
 
+## 目录
+
+- [功能](#功能)
+- [架构概览](#架构概览)
+- [快速开始](#快速开始)
+- [环境变量说明](#环境变量说明)
+- [降级模式](#降级模式)
+- [常见问题](#常见问题)
+- [相对于原始泄露源码的修复](#相对于原始泄露源码的修复)
+- [项目结构](#项目结构)
+- [技术栈](#技术栈)
+
+---
+
 ## 功能
 
 - 完整的 Ink TUI 交互界面（与官方 Claude Code 一致）