Both new #2006 regressions faked the events response with an object cast
`as unknown as Response`, which AGENTS.md rejects — it erases the check
that the mock actually satisfies the API the hook consumes.
Each now builds a real `ReadableStream` inside a real `Response`. `pull`
runs once per chunk the hook's reader consumes, so awaiting a promise
inside it gates delivery exactly the way the hand-rolled reader did,
while the mock stays type-checked against the Response contract. The
chunk counter replaces the read counter as the "the reader has consumed
the previous chunk" signal.
Both still fail against the pre-fix parser, verified.
Raised by Copilot on PR #2036.
Signed-off-by: cliffhall <cliff@futurescale.com>
7a29a21618