Assert some request the model received contained needle — the "did the
injected context land" invariant (SessionStart additionalContext, slash
command expansion). Harness tier only; a zero-request trace fails with a hint
that the eval tier can't capture requests.
Assert some request the model received contained
needle— the "did the injected context land" invariant (SessionStartadditionalContext, slash command expansion). Harness tier only; a zero-request trace fails with a hint that the eval tier can't capture requests.