[Docs] Correct recent personal workflow guidance

[roomote-community]

​Opened on behalf of @mrubens. Follow up by mentioning @roomote, in the web UI, or in Discord.

What changed

• document the opt-in Home suggestions setting and its use of recent completed-task memories
• correct Session secret approval guidance after the header entry point and saved-approval management controls were removed

Why this change was made

The daily public-documentation audit inspected all 22 first-parent commits on develop in the exact window from 2026-09-13T03:00:45.839Z through 2026-09-14T03:00:45.839Z. These two user-facing workflows were the confirmed documentation gaps not already covered by an active docs pull request.

Draft PR #2615 remains separate for task retry, notification, and widget-delivery guidance; this change does not duplicate that scope. Draft PRs #2582 and #2633 also remain separate for automation/Telegram and Resend documentation.

Impact

Users can now find the current secure approval path for Session API keys and understand when personalized Home suggestions read their memories. Mintlify validation, broken-link checking, git diff --check, the pre-push lint suite, 27 fast typechecks, and Knip passed. Rendered screenshots are unavailable because the local Mintlify preview returned an internal error after generated .next artifacts went missing; no visual proof is claimed.

[roomote-community]

No code issues found. See task

_{Reviewed ee98bcd}