Follow-ups found during the server-readiness effort

This is the tracking issue for work discovered during the server-readiness effort (see #23) that is real but explicitly out of scope for it — either because it's a future feature, a deferred performance concern, or a decision that depends on the deployment target. Collected here as sub-issues so nothing gets lost.

Start by reading #23 and the follow-up sub-issues collected under this tracker. Choose one concrete follow-up with explicit scope, then review its deployment-target assumptions and acceptance criteria before making changes. This tracker is complete when each follow-up is separately actionable.

Written by the indexing model from the issue text.