chore: Remove Claude Code artifacts and fix .gitignore

- Remove .claude-flow/ directory from version control
- Fix .gitignore formatting (.DS_Store was concatenated with .claude-flow/)
- Add .claude/, .claude-code/, .claude-flow/, and .hive-mind/ to .gitignore
- Restore yarn.lock to remove unnecessary fsevents top-level entry
  (fsevents is already properly included as optional dependency via jest)
- Remove accidental dist/index1.js build artifact
- Rebuild dist with current source

Addresses review feedback from @goruha in PR #106

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: jamengual