okhp3-repl-repo-janitor

Clean up a single Replit-hosted Git repository — squash-merge and delete old, merged, or abandoned branches and pull requests (including Replit-generated subrepl-*, replit-agent, and agent/* branches), and normalize file/folder names against a kebab-case default with documented exceptions. Use when a user asks to purge dead/stale branches, clean up merged PRs, decrapify or tidy the repo, fix inconsistent file naming, or wants a repeatable Replit-repo hygiene routine across multiple Repls.