Add persisted LLM audit logging

app-instance/backend/nanobot/utils/__init__.py

@@ -4,6 +4,7 @@ from nanobot.utils.helpers import (
     ensure_dir,
     get_cron_store_path,
     get_data_path,
+    get_logs_path,
     get_workspace_path,
     get_workspace_state_path,
 )
@@ -13,5 +14,6 @@ __all__ = [
     "get_workspace_path",
     "get_workspace_state_path",
     "get_data_path",
+    "get_logs_path",
     "get_cron_store_path",
 ]

app-instance/backend/nanobot/utils/helpers.py

@@ -42,6 +42,11 @@ def get_data_path() -> Path:
     return ensure_dir(Path.home() / ".nanobot")
 
 
+def get_logs_path() -> Path:
+    """获取后端日志目录（~/.nanobot/logs）。"""
+    return ensure_dir(get_data_path() / "logs")
+
+
 def get_legacy_cron_store_path() -> Path:
     """获取旧版全局 cron store 路径（~/.nanobot/cron/jobs.json）。"""
     return get_data_path() / "cron" / "jobs.json"