[Bug] Safeguards false positive: Constant triggering on benign messages

**Bug Description**
Constant false triggering of "safeguards flagged this message"

**Environment Info**
- Platform: darwin
- Terminal: pycharm
- Version: 2.1.236
- Feedback ID: e982c394-48af-4bc6-bca0-fe35f865cee2

**Errors**
```json
[]
```

Start by reproducing the false safeguard trigger in the darwin/PyCharm environment on version 2.1.236, using the benign message context associated with feedback ID e982c394-48af-4bc6-bca0-fe35f865cee2. Trace the safeguard response and compare it with the empty errors reported here; done means benign messages no longer produce the false-positive warning.

索引モデルが issue の本文から書いたものです。