Overview

Improve the built-in GitHub PR reading capability in gptme/util/gh.py to match the feature set of the standalone scripts (scripts/gh-pr-view-with-pr-comments.py and .sh).

Current State

The built-in get_github_pr_content() provides:

• ✅ Basic PR metadata (title, state, author, reviewers, etc.)
• ✅ PR description and comments
• ✅ Unresolved review comments (filtered)
• ✅ GitHub Actions status with emoji indicators
• ⚠️ Simple file:line references for review comments
• ❌ Missing code context snippets
• ❌ Missing code suggestions (diff format)

Proposed Enhancements

1. Add Code Context Snippets

Show the actual code being commented on for each review comment:

**@ErikBjare** on gptme/lessons/commands.py:29:
Duplicated with _lesson_help below

Referenced code in gptme/lessons/commands.py:29:
Context:
```gptme/lessons/commands.py
def lesson(ctx: "CommandContext") -> Generator["Message", None, None]:
    """Lesson system commands.
    
    Usage:
        /lesson list [category]         List available lessons
```

2. Include Code Suggestions

When reviewers provide code suggestions, show them in diff format:

**@ellipsis-dev[bot]** on gptme/tools/lessons.py:91:
Use logger.exception to log the full stack trace instead of logger.warning in the exception block.

```suggestion
        logger.exception(f"Failed to include lessons: {e}")
```

3. Better Thread Organization

Group review comments by file/thread with clear visual separation.

Implementation Notes

• Use GraphQL API to fetch review comment context (diff hunks)
• Extract code suggestions from comment bodies (GitHub suggestion syntax)
• Maintain current filtering of resolved comments
• Keep GitHub Actions status (already implemented)

Related

• Scripts: scripts/gh-pr-view-with-pr-comments.py, scripts/gh-pr-view-with-pr-comments.sh
• Code: gptme/util/gh.py

Success Criteria

• Review comments show code context (3-10 lines around commented line, or selected lines if several)
• Code suggestions are displayed in diff format
• All existing functionality preserved (resolved comment filtering, GitHub Actions status)
• Clean, readable output format