- Handle empty repos in ConfigureSparseCheckout (skip read-tree when no HEAD) - Fix errcheck: wrap fileLock.Unlock() error in defer - Fix unparam: remove unused *rig.Rig return from getWitnessManager - Fix unparam: mark unused agentType parameter with blank identifier 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>