1097fa3507
A client-callback throw only becomes a JSON-RPC error RESPONSE to the agent's session/request_permission — runScenario itself kept going, so a tolerant agent could treat the error as a denial and the scenario would pass, or worse, record: the impossible click baked into fixture and golden, green on every replay. The mismatch is now captured as a harness error while the agent is answered plain cancelled (a well-defined path it cannot reinterpret), and the step loop rejects the run on it as soon as the in-flight step settles. The spec asserts the rejection instead of the agent-side error echo.
support/ — dev/test/example infrastructure
Packages that exist to serve development, testing, and the examples rather than to ship as product API. They are real workspace packages (typed, tested, under the coverage gate), but they carry lower compatibility expectations: they may change or be removed when the development need behind them does, without the deprecation care a product package would warrant.
| Package | Role | ctx key |
|---|---|---|
acp-snapshot/ |
ACP snapshot suite kit: subprocess scenario harness + golden normalizers + the defineAcpSnapshotSuite factory |
(library — imported by example *.snapshot.ts suites) |
invariants/ |
Dev-mode event-contract invariants + session-log freeze | (listens on session/*, agent/*) |
llm-replay/ |
Record/replay adapter: short-circuits llm/stream from a recorded session JSONL (keyless snapshot tests) |
(listens on llm/stream) |
subagent-mock/ |
Scripted SubagentProvider for deterministic seam/tool tests |
(registers on ctx.subagents) |
invariants runs only in dev mode (contract checks, not runtime behavior). llm-replay backs the demos and the snapshot test tier under the per-file coverage gate. acp-snapshot carries the snapshot tier's harness/normalizer/suite machinery so every example's suite is a scenario table over one shared, gate-covered implementation. subagent-mock exercises the real ctx.subagents load path without a model or child agent. A package graduates OUT of support/ into a product group only when it gains documented product consumers.