Five browser e2e scenarios over the existing keyless lane, one recorded
base fixture per spec family:
- live-interactions: one tool-free recorded turn + per-run override
sidecars authored in the spec (content single-sourced from the fixture
via deriveReplayScript, minted into a spec-owned temp dir). Cancel uses
a hang patch with a readyFile marker — the marker proves the stream is
parked mid-turn before the Stop click, so mid-stream cancellation is
deterministic by construction (turn/end 'aborted', composer re-enabled).
AUTH pins the non-retryable path: turn/end 'error', zero llm/retry
events, composer recovers; FIXME(web-error-surface) marks the found
product gap (no error copy renders — the client consumes no agent/error
frames and a pre-chunk failure freezes no partial). SERVER retry appends
the fixture's own success after an injected throw and proves llm-retry
end-to-end in the browser via the durable llm/retry record.
- question-composer: the shipped ask_user_question takeover blocks the
turn mid-step on the real userInteraction seam; the test answers through
the composer (the one sanctioned model-content-reactive drive step: the
turn cannot complete without it) and the tool result carries the answer.
Adds the composer waiting-state aria golden.
- steering: steers mid-turn while the composer blocks the step (the
deterministic mid-turn window). The steer rides the real wire
(session.prompt mode:'steer' POSTed from the page; the locked composer
has no steering gesture yet — TODO(web-steer-composer)); downstream is
all product: gateway -> Agent.steer -> step-boundary drain -> durable
steering/message -> SSE -> badged interjection bubble. Record mode
rejects a fixture whose live reply ignored the steer.
Scaffold gains the replayOverride passthrough; specs register in both
tsconfig planes (client exclude, host include).
Tianyi Cui