Ask for some usage issues and best practices

  1. Composer’s save all seems to be of little use, as it appears to have already been automatically saved?
  2. Project Rules is it better to write only one rule per rule, or can multiple rules be written like the previous .cursorrules?
  3. For projects similar to front-end and back-end separation using Vue and PHP, is it better to open the projects separately with Cursor (two windows) or to open both projects in one window for development?