added0778e
Add CloseIssue (PATCH state=closed) and PostComment (POST comment body)
methods to the Gitea client with cache invalidation. Add corresponding
handler routes POST /issues/{owner}/{repo}/{index}/close and
POST /issues/{owner}/{repo}/{index}/comment with HTMX support.
Include unit tests for both client methods.
Closes leeworks-agents/gitea-mobile#36
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>