Record the measured numbers (23 snapshot files, 26 assistant messages)
instead of the estimate, and document why the E2E hovers the unrated
control before asserting the restored state.
Consume the durable message-feedback sidecar from #2217 in the browser:
per-message Like/Dislike with an optional note, contributed through a
declared assistant-actions slot.
- carry MessageId on finalized AssistantMessageNode so a target is nameable
- declare conversation.chat.assistant-actions and render it in the
IconActions row between copy and branch
- hold one FeedbackController per Session with per-item ifVersion CAS,
reconciling a version-conflict from the reply's authoritative item
- mount messageFeedbackRemote alongside goalsRemote
Tianyi Cui