Continued building out the PR review workflow with prs fixed and prs wontfix commands. These replace the earlier reply and resolve commands with more opinionated actions — fixed replies with a message about the fix and resolves the thread, while wontfix explains why the comment won’t be addressed and resolves it. This better matches how I actually respond to review feedback.

Improved the list-comments flow to handle the case where all review threads are already resolved — it now drops the comment cache and prints a clear message instead of showing an empty list.