Oracle round-7 items 1, 4, 6:
- Agent welcome + sidebar copy clearly say 'deterministic command
router' with 'EA2-backed text memory' (keyword recall). LLM adapter
described as 'separate component, off by default'. No more 'natural
language LLM on the roadmap' overclaim.
- 3 new full_dogfood gates:
* memory_vault_remember_acks (proves vault write)
* memory_vault_recall_returns_match (proves vault read by content)
* llm_unconfigured_falls_back_gracefully (proves agent never crashes
when LLM proxy isn't wired - the current state)
* chat_sidebar_shows_previews_and_timestamps (proves chat polish
elements render)