docs: update Claude Code releases (v2.1.15-v2.1.17)

- Add v2.1.17: Fix AVX crash
- Add v2.1.16: Task management system, VSCode plugins
- Add v2.1.15: npm deprecation, React Compiler perf
- Bump guide version to 3.11.4
- New milestone: v2.1.16 (task management)
- New breaking: npm installations deprecated

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

README.md

@@ -361,7 +361,7 @@ Claude Code sends your prompts, file contents, and MCP results to Anthropic serv
 
 **Status**: Research preview (Pro $20/mo or Max $100-200/mo, macOS only, **VPN incompatible**)
 
-**Archive**: Historical versions available in git history (pre-v3.11.3)
+**Archive**: Historical versions available in git history (pre-v3.11.4)
 
 </details>
 
@@ -430,7 +430,7 @@ Licensed under [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/).
 
 ---
 
-*Version 3.11.3 | January 2026 | Crafted with Claude*
+*Version 3.11.4 | January 2026 | Crafted with Claude*
 
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