Antigravity responses without a model field or a Model Selection event (subagents, ACP sessions) were imported as unknown. Recover the model from the native conversations/<id>.db: prefer the tiered model ID (field 21, matching Model Selection and pricing) and fall back to the base model name (field 19). The database is opened read-only, never waits on a writer, and keeps already recovered names when it cannot be read.
Co-authored-by: Jason <farion1231@gmail.com>
