Complete documentation writer run tasks

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 run: refreshed the Secrets reference with 9 new prod captures, set the 2026-11-02 changelog day to v1.3.1464 and dropped an internals bullet, made two small Jaah API reference fixes. Guides not due. Quick gate green, review and verifier passed; PR #7819 queued in the merge lane. Memory: used mem-22234, mem-32882.