Meta connection status

Whether this shop's Meta integration is live, and what it is wired to: the Facebook Page, the Instagram Business account, the ad account and the Business Manager. This is the cheap call — it reads the stored authorization rather than fanning out to Meta, with a single best-effort Instagram profile fetch layered on top (its failure degrades the ig object, never the response).

connected: false covers both never-connected and revoked/expired-and-not-yet-repaired; a shop in the latter state answers 409 META_REAUTH_REQUIRED on the endpoints that call Meta. Poll this before the network-bound reads. Single shop only.