Repo Mgmt

Repository management toolkit: organise and dedupe local repos, retrofit codebases with AI agent primitives, janitor-style cleanup, convert to Claude plugins, spin off breakaway or parallel-private repos; scan for dead remotes, missing clones, visibility risks, and stale archive candidates; bulk git ops across folders of clones plus an interactive PyQt6 prune GUI. Includes a preferences layer that remembers where different repo types live on disk. (PII scanning has moved to the standalone `pii-scanner` plugin.)