[Bug] `<system_reminder>` 每轮写入对话历史且不被清理，导致上下文持续增长

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
78/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Active
Tech stack
python
Domain
ai, backend

Research direction

Start in astr_main_agent.py at _append_system_reminders, comparing the current-time reminder with the knowledge-base injection around lines 310-314. Reproduce multiple requests in one session and inspect req.contexts through the on_llm_request hook; done means the reminder is temporary and no longer accumulates in conversation history.

Written by the indexing model from the issue text.

Description

bug
问题描述

_append_system_reminders 在追加"当前时间"提醒时没有调用 .mark_as_temp()，导致这条本应只对当前请求生效的临时内容被持久化进对话历史，并在之后每一轮请求中重复发送。

同一个文件里的知识库注入（astr_main_agent.py:310-314）正确调用了 .mark_as_temp()，说明这是遗漏而非设计。

影响

  • 对话历史随轮次线性增长，每轮多一条时间提醒，且永不清理
  • 过期的时间信息对当前轮次无意义，属于无效上下文
  • 白占 token，并会更早触发上下文压缩；压缩会额外调用一次 LLM 做总结，增加成本与延迟
如何复现？

在同一会话中连续进行多轮对话
通过 on_llm_request 钩子抓取请求，观察 req.contexts

AstrBot 版本

null

操作系统

Windows

部署方式

null

使用的消息平台适配器

nc

错误日志
-
辅助信息

No response

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