- Replace interface{} with any in github/reviews.go (Go 1.18+ idiom)
- Add default panic case to VCS client init switch
- Refactor supersedeOldReviews to return error instead of os.Exit(1)
- Remove spurious blank lines in formatter.go and formatter_test.go
- Add doc comment to DeleteReview explaining when to use vs DismissReview
- Sanitize extractSentinelName output to prevent log injection
- Add --provider flag (gitea|github) for VCS backend selection
- Add --base-url flag for GitHub API endpoint configuration
- Rename --gitea-url to --vcs-url with backward-compatible alias
- Replace direct gitea.Client usage with vcs.Client interface
- Create vcs.Client via factory switch based on --provider value
- Implement Reviewer + Identity interfaces on github.Client
- Add verdictToEvent() using canonical vcs.ReviewEvent types
- Remove review.GiteaEvent() (replaced by verdictToEvent)
- GitHub supersede uses DismissReview; Gitea keeps EditComment flow
- Add VCS_PROVIDER, VCS_BASE_URL, VCS_URL env var support
Closes#82