Three Oracle round-7 caveats:
1. Wizard view replacement now deletes old presentation edges before
creating new field-based ones. Previously handleDataSave added new
edges additively, so runtime could still hit the generic Notes view.
2. Chat sidebar QA assertion was vacuously true (previewRows >= 0 &&
timeBadges >= 0). Now: when threads exist, preview count must equal
thread count AND at least one relative timestamp must render.
3. Agent composer placeholder rebranded from 'Ask Pi...' to 'Ask the
assistant...'. Closes residual Pi/LLM framing leak.