Products And Orders Pages Faster On Large Datasets

A handful of changes that together cut the Products and Orders list pages from tens of seconds to milliseconds on large accounts: a redundant unfiltered count query was removed from both pages, partial indexes were added on orders(company_id, created_at) and products(company_id, created_at) (archived rows excluded), pagination on the products resolver moved into SQL, and the fulfillment timeline events query was lazy-loaded out of the V2 order detail query so the order page returns in milliseconds instead of seconds.

No user-facing behavior change beyond the speed.