Claude Code recently added native worktree support (--worktree), which helps a lot with parallel agent isolation.

What's still unsolved is conflicts across active worktrees, which often surfaces late.

I built Clash (OSS, Rust) to detect potential conflicts earlier using read-only merge simulation across worktrees during edits.

  - clash check <file> for pre-edit checks
  - clash status for a cross-worktree conflict matrix
  - clash watch for live monitoring
  - Claude plugin hook support for Write|Edit|MultiEdit

Quick setup (CLI + Claude plugin):

  curl -fsSL https://clash.sh/install.sh | sh && \
  (claude plugin marketplace add clash-sh/clash || true) && \
  (claude plugin install clash@clash-sh || claude plugin update clash@clash-sh)

Would love feedback or your thoughts on this.