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/src/__init__.py

@@ -0,0 +1,29 @@
+"""Python porting workspace for the Claude Code rewrite effort."""
+
+from .commands import PORTED_COMMANDS, build_command_backlog
+from .parity_audit import ParityAuditResult, run_parity_audit
+from .port_manifest import PortManifest, build_port_manifest
+from .query_engine import QueryEnginePort, TurnResult
+from .runtime import PortRuntime, RuntimeSession
+from .session_store import StoredSession, load_session, save_session
+from .system_init import build_system_init_message
+from .tools import PORTED_TOOLS, build_tool_backlog
+
+__all__ = [
+    'ParityAuditResult',
+    'PortManifest',
+    'PortRuntime',
+    'QueryEnginePort',
+    'RuntimeSession',
+    'StoredSession',
+    'TurnResult',
+    'PORTED_COMMANDS',
+    'PORTED_TOOLS',
+    'build_command_backlog',
+    'build_port_manifest',
+    'build_system_init_message',
+    'build_tool_backlog',
+    'load_session',
+    'run_parity_audit',
+    'save_session',
+]