docs(north-star,pm-dispatch): the feature axis — area:* labels, the 「路」 section as an ordered list of feature points, cross-layer features as parent + per-layer sub-issues, domain:* retreats to file ownership (#19483)

docs(north-star,pm-dispatch): the feature axis — area:* labels, the 「路」 section as an ordered list of feature points, cross-layer features as parent + per-layer sub-issues, domain:* retreats to file ownership (#19483) #6705