Tianyi Cui
81d434896d
Adds the snapshot-test harness and the keyless replay pipeline end-to-end. - snapshot-harness.ts: boots the real acp-agent subprocess via the cordis Loader (preserving TSX_TSCONFIG_PATH so unbuilt dsh-* imports resolve from a temp cwd), tees raw stdout into an SDK ClientSideConnection, interprets a per-scenario input.json DSL (initialize / newSession capturing the random sessionId / prompt / cancel), closes stdin to trigger graceful shutdown, and harvests the persisted session.jsonl. Failure-safe: a finally block SIGKILLs a live child, awaits its exit, and removes both temp dirs even on a thrown step or harvest. Raw bytes are buffered and decoded once (no multibyte split). - snapshot-normalize.ts (+ spec): two pure normalizers (stdout frames + session JSONL) scrub cwd, session ids / UUIDs, and JSON-RPC ids, and zero time / createdAt — but keep `seq` (deterministic by contract). normalizeStdout throws on a non-JSON line (the stdout-purity check). - start.ts: selects cordis.snapshot.yml (replay, providerless) or cordis.snapshot-record.yml (record, real adapter) from DSH_SNAPSHOT, skips .env in replay, and disposes the ctx on stdin end so persistence flushes before exit (harvest-after-flush, not on the prompt response). - acp.snapshot.ts: asserts the normalized stdout golden (and, for model scenarios, the re-persisted JSONL golden) via toMatchFileSnapshot; record mode writes the harvested log back to the scenario fixture; an orphan-fixture guard fails on an unregistered scenario dir. - handshake scenario: initialize + session/new (no model call; a header-only session.jsonl, since session/new persists no events). - vitest.snapshot.config.ts, test:snapshot / test:snapshot:record scripts, a pre-push snapshot job, and the knip entry. Incorporates Codex review: record-fixture writeback, failure-safe teardown, seq-not-scrubbed, harvest-after-flush. Per docs/rfc/implemented/2026-06-19.
Examples
Runnable demos (not workspaces) that showcase how the harness is wired.
echo-agent
A mock model + echo tool + stdio UI + JSONL persistence demo. Demonstrates:
- Loading plugins from a
cordis.ymlvia@cordisjs/plugin-loader+@cordisjs/plugin-include - Registering a mock
LlmAdapter(streaming scripted responses) - Registering a tool via
ctx.tools.register() - Persisting session events to JSONL via the
session/event+session/flushpattern - A minimal stdio UI consuming
agent/stream-chunkand session events
Run with: pnpm run demo:echo
When prompted, type "echo " to trigger a tool call round-trip.
coding-agent
The real thing: DeepSeek V4 + the bash tool suite + stdio chat + JSONL persistence, wired from cordis.yml. Where echo-agent proves the skeleton with mocks, this is a usable coding assistant.
Run with: pnpm run demo:coding (needs DEEPSEEK_API_KEY in the environment or a gitignored repo-root .env). See coding-agent/README.md for details.