Extract shared comment helpers (content/item/form/geo/actions), port GIF [g=] smilies + FixedInput/moveForm UX, wire close_comments/city/quick settings, REST comment get, and align product review chrome with zibll.
Add REST comment/list + comment/submit HTML fragments, shared query renderer for order/author/hottest, fix load-more policy and DOM targets, and stop full-page scrapes for order/author/reload.