git-parsec 0.3.0

Git worktree lifecycle manager — ticket to PR in one command. Parallel AI agent workflows with Jira & GitHub Issues integration.
## Summary

<!-- Brief description of the changes -->

## Related Issue

<!-- Link to the related issue: Fixes #123 / Closes #123 -->

## Type of Change

- [ ] Bug fix
- [ ] New feature
- [ ] Refactoring (no functional changes)
- [ ] Documentation
- [ ] CI/CD
- [ ] Other (describe below)

## Pre-submit Checklist

- [ ] `cargo test` passes
- [ ] `cargo fmt --check` passes
- [ ] `cargo clippy` passes
- [ ] I have added/updated relevant documentation (if applicable)