重构: String→newtype 强类型 + 工程清理

- df-types: ExecutionId/ToolCallType 从 type 别名改为 newtype 结构体
- df-ai-core: 新增 ToolType newtype / MessageStatus 枚举,
  ChatMessage.status 从 Option<String> 改为 Option<MessageStatus>
- provider: is_active() 改用 MessageStatus::Active 模式匹配
- context/chat/conversation: 构造站点更新为枚举变体
- .gitignore: 添加分析脚本排除项,清理根目录临时文件
- Batch.md: 更新最新提交与新增 Batch 37 记录

.gitignore

@@ -59,6 +59,28 @@ tmp/
 # AI 编排脚本(Claude Code Workflow 临时产物,非产品代码)
 workflows/
 
+# 临时分析脚本(团队分析/报告生成,非产品代码根目录级)
+/analysis_*.txt
+/analysis_*.py
+/core_domains.txt
+/core_domains.py
+/final_report.txt
+/grand_output.txt
+/im_live_verify.txt
+/liang_deep.py
+/liangxianyou_deep.txt
+/member_profiles.py
+/read_all.py
+/report_p2.txt
+/report_wall.txt
+/team_analysis.py
+/team_deep_analysis.py
+/team_member_profiles.txt
+/team_report_final.txt
+/tmp_*.py
+/tmp_*.txt
+/verify_im_live*.py
+
 # MCP/SQLite 测试库(mcp_test2 --db 残留)
 devflow-dev.db
 devflow-dev.db-shm