Git Squash

Squash the current PR branch into one commit based on net branch changes relative to the default branch. Do not create or invoke a helper script. Run the Git commands directly.

Arguments

Parse $ARGUMENTS for optional flags:

• --subject <line>: Override the generated commit subject line
• --base <branch>: Override default-branch auto-detection

Defaults:

• Subject: infer a conventional-commit subject from the squashed changes themselves; do not default to chore
• Base detection order:
  1. refs/remotes/origin/HEAD
  2. git remote show origin
  3. main, master, trunk