Update mapping pill for table/json views

Editor assessment

The subject describes the visible change — the mapping pill updated for table and json views — but stops short of saying what was wrong or improved, so some diff-reading is needed. The feat type is plausible and the absent scope is a missed chance to name the editor area. The body is two squashed bullets, standardize the mapping pill and update tests, that sketch intent without motivation. The PR reference is well-formed. Hygiene is fine. Understandable with modest effort, but thin content keeps it at the acceptable tier.