Ultrareview: add structured report view & download on web session page

Feature Request

The ultrareview web session page (claude.ai/code/session_*) currently only shows a raw execution log. When the review completes, there is no way to view or export the findings in a structured format from the web UI.

Requested Features

1. Structured report view — Display findings in a readable, organized format (severity, file, description, suggested fix) directly on the session page, instead of just the raw agent log.

1. Download button — Allow exporting the report as Markdown or JSON, so it can be shared with teammates or fed to another agent for automated fixes.

Why

• The findings data is already produced by the review agent — it just needs to be surfaced in the UI.
• Currently, users must rely on the CLI task notification to get structured results, and if that crashes (as it sometimes does), the findings visible in the web log are not actionable without manual copy-paste.
• Both features seem straightforward to implement since the structured JSON findings already exist server-side.

Current Workaround

Read the raw log visually from the web session page and manually reconstruct the report — which defeats the purpose of automation.