[Bug] Anthropic API connection errors and dropped sessions recurring over 3 days

**Bug Description**
for the last 3 days i've been having issues with "API error" and "connection dropped" in my claude code sessions. Not sure what has changed, since I have been running claude cexactly in this way (terminal window in pycharm) for over a year and on this Mac for almost that long. please help, this is very frustrating.

**Environment Info**
- Platform: darwin
- Terminal: pycharm
- Version: 2.1.269
- Feedback ID: 5349d35c-e025-4451-8139-44d016c7f99f

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

The report concerns Claude Code 2.1.269 running in a PyCharm terminal on macOS, with recurring API errors and dropped sessions over three days. Start by reproducing the failure in that environment and reviewing feedback ID 5349d35c-e025-4451-8139-44d016c7f99f; done means identifying a reproducible cause and verifying stable sessions.

索引モデルが issue の本文から書いたものです。