DL-290

A profile-named model that fails registry resolution FAILS LOUD on ALL sessions (every session carries a profile; default included) — the spawn fails with a frame-visible error (the Manager belt cli.ts:991-1005 fires on session.model === undefined); a model that resolves but has no working auth fails loud as a frame-visible HARD error (at spawn if T6 auth-pre-flights the pinned model, else at first turn), never a silent substitution. Compass never relies on the SDK’s built-in silent auth-fallback substitution

Status: Active (Matt, 2026-08-29)

Record: ../../agent/compass-per-agent-overrides/design.md#t6–agent-profile-resolution–model-stack-render