[BUG] All kinds of problems during last night's session

### Preflight Checklist

- [x] I have searched [existing issues](https://github.com/anthropics/claude-code/issues?q=is%3Aissue%20state%3Aopen%20label%3Abug) and this hasn't been reported yet
- [x] This is a single bug report (please file separate reports for different bugs)
- [x] I am using the latest version of Claude Code

### What's Wrong?

The concrete items worth listing, from this transcript: reasoning shown as if addressed to you ("What I need next, privately"); a Cyrillic identifier generated in Swift source; three wrong diagnoses of the identical previews before the log line that answered it was read; generalising from five log lines; and a test report on a binary that hadn't been rebuilt. The timestamps and the quotes are all in the transcript.

### What Should Happen?

I don't need to see internal dialog. I am talking in English; I should not see Cyrillic. I should not have to point out obvious misdiagnoses and tell Claude how to diagnose.

[cc-20260916-135150-5ad822.zip](https://github.com/user-attachments/files/32292453/cc-20260916-135150-5ad822.zip)

### Error Messages/Logs

```shell

```

### Steps to Reproduce

The transcript has everything in it.

### Claude Model

Opus

### Is this a regression?

I don't know

### Last Working Version

_No response_

### Claude Code Version

Claude 2.110.0 (dfb2ba) 2026-09-15T05:50:55.000Z

### Platform

Anthropic API

### Operating System

macOS

### Terminal/Shell

Other

### Additional Information

This was in the Claude desktop app on Mac OS

Start by reviewing the attached transcript and its timestamps and quotes; no source file, test, or reproducible command is identified in the issue. Done would require isolating these reported behaviors into actionable, reproducible bugs rather than treating the transcript as a single diagnosis.

Written by the indexing model from the issue text.