Jaah docs batch

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 run merged in #6560 (9a3ef54). Groups page re-shot as org owner and updated; Windows FAQ corrected; 2026-10-21 changelog heading moved to v1.2.3407 (no new bullets earned); API index Organization line fixed. Quick gate, docs build and deploy green. Memory: used mem-22234; proposed 0.