chore: ignore runtime data/ and logs/ directories

data/ contains downloaded model caches (tiktoken, embedding models, browser_use 资源) 与 logs/ 下的 llm_prompt_audit jsonl 都是本地运行时产物，不该被追踪。原有规则只点名了 data/ 的若干子目录和 *.log 后缀，漏掉的子项让 git status 持续把整个目录标成 untracked。

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: Hongzhi Wen

.gitignore

@@ -7,6 +7,8 @@ tests/test_inputs/
 
 # 忽略日志文件
 *.log
+/logs/
+/data/
 debug_audio/*
 # Binaries (but keep our committed Windows tools listed explicitly if needed)
 *.exe