Provide an option to export session to a static html

### Problem Statement

I hope there's a way to export the session report to a static html. I use ocr in GitLab merge request pipeline. I want to archive a html report after all things are done and we can debug review process easily with the html file.

### Proposed Solution

parse jsonl to a html

### Alternatives Considered

_No response_

### Affected Area

Output / Formatting

### Additional Context

_No response_

Start by tracing how the session report is emitted as JSONL and locate the output/formatting entry point. Add an export path that produces a static HTML report suitable for archiving from a GitLab merge request pipeline; done means the report can be opened and used to review the completed session without the running tool.

Written by the indexing model from the issue text.