Fold a user's writing corrections back into their skill file

When a user corrects blog wording repeatedly in one session (bare percentages, meta lead-ins, endings aimed at the wrong audience, unlabeled chart axes), add each correction to their writing skill as a one-line rule with a real before and after example, and add a short pointer in the skill's main gotcha list. This user's skill directory was a symlink into a separate git repo (anikonistack). Commit from that repo's root: running git add with a path relative to the symlinked skill folder failed with 'pathspec did not match'. Confirm with the user before pushing that repo.