Writing documentation for Jaah console feature

Docs-writer run. Follow apps/docs/WRITER.md on develop. Do each item that is due, all in ONE PR: 1. Screens: one console feature's reference page. 2. Guides: one Get started, Using Jaah or FAQ item. 3. Changelog: the next batch of prod promotions 4. Reference: the Jaah API and Real-time reference against the code. Sign in only through the capture helper. Nothing due: end with no PR.

Docs-writer: Plan and billing pages refreshed and recaptured on prod (Jaah AI cards plan-gated), changelog 2026-10-22 v1.2.3597; Guides and Reference had nothing due. Quick gate green; PR #6624 queued in the merge lane. Draft follow-up #8985. Memory: none applied.