Since the questions[]-only schema (#95907) every single question is a
one-entry batch on both the tool args and the gateway wire, yet no test
exercised that shape (called out in #98645). Lock the behavior down at
both layers:
- unit: a one-entry batch renders the batch card (not a blank/spinner
single card) both with the wire already parked and when the request
lands after the tool row, and answers with the qid-keyed lock
- e2e: a SINGLE_BATCH trigger drives the real chain (composer -> gateway
-> agent -> clarify tool -> clarify.request -> renderer) through mount,
pick, confirm, and settle for questions.length === 1
The e2e mock's trigger routing also learns to scope its has-tool-result
guard to the answering turn's own question text: the existing any-tool-
result check would false-positive once a second scripted clarify shares
the conversation history.
Adapted to main: the mock server now lives in tests-js/scripts, and a batch
confirm answers with clarify.lock.
00c8e5ca48