fix(git): scope git-workflow's trigger to ambiguity rather than to its domains

git-workflow's description enumerated the six domains it exists to route away
from, so it competed for selection with the very skills it should be handing
off to. It now triggers on the case it actually serves: an interactive request
whose domain is not yet clear.

Also clears frontmatter drift across the plugin and removes duplicated guidance
in pc-run that had diverged from its reference.

plugins/git/skills/git-commits/SKILL.md

@@ -8,7 +8,6 @@ description: >
   Not branch lifecycle -> `git-branches`.
 
 metadata:
-  version: "0.1.3"
   category: git
   source_keys:
     - conventional-commits-spec