- Expand .golangci.yml with more linters (bodyclose, errcheck, etc.), settings for govet, revive, gocritic, gosec
- Add // nolint:gosec comments for intentional file operations and subprocesses
- Change file write permissions from 0644 to 0600 for better security
- Refactor loops, error handling, and test parallelism with t.Parallel()
- Minor fixes: ignore unused args, use errors.Is, adjust mkdir permissions to 0750
- Implement `grokkit changelog` command with flags for version, since, stdout, and commit reminder
- Add git helpers for latest/previous tags and formatted log since ref
- Include tests for message building and full changelog construction
