Add Chinese README, docs links, and collapsible module tables

- Add README_CN.md with full Chinese translation
- Add language switcher (EN/ZH) and docs/ links to README.md
- Collapse long module tables (Internal Code, Tools, Assets) into <details>
- Point to docs/ directory for deep analysis reports

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

README.md

@@ -3,6 +3,19 @@
 > Extracted from npm package `@anthropic-ai/claude-code` version **2.1.88**.
 > The published package ships a single bundled `cli.js` (~12MB). The `src/` directory in this repo contains the **unbundled TypeScript source** extracted from the npm tarball.
 
+**Language**: **English** | [中文](README_CN.md)
+
+---
+
+> **Deep Analysis Reports**: Full source code analysis reports are available in the [`docs/`](docs/) directory (bilingual EN/ZH):
+> - Telemetry & Privacy (opt-out-free data collection pipeline)
+> - Hidden Features & Model Codenames (Tengu, Capybara, Fennec, Numbat)
+> - Undercover Mode (AI attribution stripping in open-source contributions)
+> - Remote Control & Killswitches (managed settings, feature flags)
+> - Future Roadmap (Numbat model, KAIROS autonomous mode, voice input)
+>
+> **English**: [`docs/en/`](docs/en/) | **中文**: [`docs/zh/`](docs/zh/)
+
 ---
 
 ## Missing Modules Notice (108 modules)
@@ -15,6 +28,9 @@
 
 These modules have no source files anywhere in the npm package. They are internal Anthropic infrastructure.
 
+<details>
+<summary>Click to expand full list</summary>
+
 | Module | Purpose | Feature Gate |
 |--------|---------|-------------|
 | `daemon/main.js` | Background daemon supervisor | `DAEMON` |
@@ -61,10 +77,15 @@ These modules have no source files anywhere in the npm package. They are interna
 | `udsClient.js` / `udsMessaging.js` | UDS messaging client | `UDS_INBOX` |
 | `systemThemeWatcher.js` | Theme watcher | `AUTO_THEME` |
 
+</details>
+
 ### Feature-Gated Tools (~20 modules, DCE'd from bundle)
 
 These tools have type signatures in `sdk-tools.d.ts` but their implementations were stripped at compile time.
 
+<details>
+<summary>Click to expand full list</summary>
+
 | Tool | Purpose | Feature Gate |
 |------|---------|-------------|
 | `REPLTool` | Interactive REPL (VM sandbox) | `ant` (internal) |
@@ -85,10 +106,15 @@ These tools have type signatures in `sdk-tools.d.ts` but their implementations w
 | `ListPeersTool` | List active peers | `UDS_INBOX` |
 | `DiscoverSkillsTool` | Skill discovery | `EXPERIMENTAL_SKILL_SEARCH` |
 
+</details>
+
 ### Text/Prompt Assets (~6 files)
 
 These are internal prompt templates and documentation, never published.
 
+<details>
+<summary>Click to expand</summary>
+
 | File | Purpose |
 |------|---------|
 | `yolo-classifier-prompts/auto_mode_system_prompt.txt` | Auto-mode system prompt for classifier |
@@ -98,6 +124,8 @@ These are internal prompt templates and documentation, never published.
 | `verify/examples/cli.md` | CLI verification examples |
 | `verify/examples/server.md` | Server verification examples |
 
+</details>
+
 ### Why They're Missing
 
 ```