StackEnv v0.1.4

What changed

• Discovers every linked Git worktree with git worktree list --porcelain.
• Deduplicates linked checkouts into their primary repository.
• Tracks branch, path, lifecycle status, and Git changes independently per worktree.
• Displays all worktrees in Projects and each dirty worktree in Git changes.
• Adds worktree totals to Overview and stackenv status.
• Includes backend, model, frontend, detached, compatibility, and responsive regression coverage.