- config: Add tests for GetStringSlice, GetMultiRepoConfig, and nil viper behavior. Coverage improved from 65.3% to 84.0%. - git: Add tests for error paths in RemoveBeadsWorktree, SyncJSONLToWorktree, CheckWorktreeHealth, and sparse checkout functions. Coverage improved from 72.9% to 82.7%. Closes: bd-t3b, bd-4h3, bd-ge7 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>