Files
deepseek-harness/examples/AGENTS.md
T
Tianyi Cui 072f97c184 refactor(examples): extract reusable logic into tested packages
Logic that lived under examples/ was outside the per-file 100% coverage
gate (examples/ are not workspaces) and, in the stdio-UI case, duplicated
across two examples. Move it into packages/ so it is gated and de-duped.

- packages/ui-stdio (new): unify the two diverged stdio-chat.ts copies into
  one @deepseek-ai/dsh-ui-stdio plugin (welcome/agent Config). A test-only
  I/O seam (createStdioChat(ctx, config, runtime)) keeps process streams out
  of the serializable config and makes every render/EOF/disposal branch
  unit-testable. Per-file 100%. echo/coding cordis.yml now load the package;
  both src/stdio-chat.ts deleted.
- packages/llm-replay (new): move examples/acp-agent/src/llm-replay.ts (+ its
  spec) here so its derive/parse/replay branches fall under the coverage gate.
  cordis.snapshot.yml + README rewired to the package name; added apply/env
  /assertNever/abort tests to reach per-file 100%.
- examples/{echo,coding}-agent: keyless Loader-path e2e smokes that boot the
  real cordis.yml (no key) — the guard a hand-mounted unit test cannot be for
  the unwrapExports/export-shape class (postmortem 0001). examples/AGENTS.md
  codifies the keyless+with-key smoke convention (keyless-by-nature exception
  for echo-agent).
- AGENTS.md: a scoped, removal-triggered pre-release stance (foundation over
  blast radius). packages/README.md: new rows + a FIXME to later regroup ALL
  packages into a hierarchy. Wiring: tsconfig paths/refs, publint, knip,
  module-graph.

Verified: typecheck, lint, test:coverage (887 tests, 100%), build, hygiene,
doc-sync, test:snapshot (10), test:e2e (6 keyless pass, with-key self-skip).
2026-06-19 12:42:28 +08:00

3.4 KiB

AGENTS.md — Examples

Runnable demos that show how the harness is wired. Examples are NOT workspaces — each examples/*/package.json is a private, dependency-free stub with no build. They are booted as unbuilt tsx subprocesses via the cordis Loader reading a cordis.yml; the @deepseek-ai/dsh-* plugin names in those YAML files resolve through the root tsconfig.json paths map, not through node_modules.

Because examples are not under the packages/*/src coverage gate, an example that grows real, reusable logic should extract it into a packages/ package (where it gets the per-file 100% gate and a README). Keep only example-specific glue here: start.ts, the cordis.yml wiring, demo-only mocks/teaching artifacts, and the e2e/snapshot scenarios.

Every example ships e2e smokes (keyless + with-key)

Each example must have both kinds of end-to-end smoke, because they catch different failures:

  • Keyless smoke — boot the example through its real cordis.yml via the Loader (no API key), drive it, and assert the rendered output and a clean exit. This is the guard a hand-mounted unit test structurally cannot be: it exercises the REAL load path (unwrapExports, inject, the whole plugin tree), so a broken plugin export shape — e.g. a stray export default that collapses a namespace plugin and drops inject — fails here even when unit tests stay green (see docs/postmortem/0001). It runs in the default e2e gate (CI has no secrets).
  • With-key smoke — send a real prompt against the live model and verify the WORLD (a file on disk, a non-empty assistant turn), not the agent's self-report. This proves the actual product works, which a mock/keyless run structurally cannot. Key-gated: it self-skips without DEEPSEEK_API_KEY (see the with-key policy — inference is cheap here, so write many).

Exception — keyless-by-nature examples. An example whose model is itself a mock/deterministic stand-in (no real provider) has no meaningful with-key smoke; the keyless smoke is the complete requirement. State the exception inline in the test.

A keyless smoke that spawns the example from a temp cwd must set TSX_TSCONFIG_PATH to the repo-root tsconfig — the unbuilt paths map is found by searching UP from cwd, so a temp cwd outside the repo would otherwise fall back to stale built lib/. Pass --expose-internals when the example's cordis.yml loads the HMR plugin (mirror the demo:* script).

Current state

Example Keyless smoke With-key smoke
echo-agent tests/echo.e2e.ts — boots the real cordis.yml, drives the echo tool round-trip and the direct canned reply N/A — keyless by nature (the mock-echo model has no real provider)
coding-agent tests/keyless-smoke.e2e.ts — boots the full real tree (dummy key, no prompt → no model call), asserts banner + clean exit tests/{full-loop,coding-task,resume}.e2e.ts — real model + real bash, world-verified
acp-agent pnpm run test:snapshot — boots the real ACP subprocess and replays a recorded session keyless; tests/acp.e2e.ts also asserts stdout purity without a key tests/acp.e2e.ts — real ACP prompt, verifies a file the agent wrote

See the root AGENTS.md for repo-wide conventions and docs/architecture.md for the design.