Patch Changes

• #190 b0babcc Thanks @camoneart! - 🚨 Critical Fix: Prevent infinite directory creation in watch command

  This patch fixes a critical bug where the watch command could create 65,535 subdirectories (macOS filesystem limit), causing filesystem corruption that cannot be cleaned up with normal methods.

  Root Cause:

  • Slash-containing branch names (e.g., feature/awesome-feature) caused problematic directory structures
  • Watch command's relative path calculation could generate paths like ../feature/awesome-feature/...
  • This triggered infinite directory creation loops

  Security Improvements:

  • Added path validation to prevent directory traversal attacks (../ patterns)
  • Implemented loop detection to stop infinite directory creation
  • Added path depth limits (maximum 10 levels)
  • Ensures all file operations stay within worktree boundaries

  User Impact:
  Users running mst watch with worktrees created from slash-containing branch names will no longer experience filesystem corruption.

  Fixes #189