chore(008): 纳入 Claude Code / claw-code 源码素材并忽略缓存文件

- 收录 008 文章分析用的两份源码(claude-code-source-code、claw-code),
  已移除其内嵌 .git,作为普通素材文件入库
- .gitignore 增加 .DS_Store、__pycache__/、*.pyc,屏蔽系统与缓存噪音

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

articles/008/claw-code/.claude/sessions/session-1774998936453.json

@@ -0,0 +1 @@
+{"messages":[],"version":1}

articles/008/claw-code/.claude/sessions/session-1774998994373.json

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+{"messages":[{"blocks":[{"text":"Say hello in one sentence","type":"text"}],"role":"user"},{"blocks":[{"text":"Hello! I'm Claude, an AI assistant ready to help you with software engineering tasks, code analysis, debugging, or any other programming challenges you might have.","type":"text"}],"role":"assistant","usage":{"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"input_tokens":11,"output_tokens":32}}],"version":1}