Tianyi Cui a53a56ff48 fix(agent-loop): fold session lifecycle into the agent effect for ordered teardown
A stronger durability test (dispose MID-turn, then re-load from disk) caught
that the original two-sibling-effect design dropped the loop's closing
`turn/end` on the bare fiber-dispose path: a fiber unload disposes sibling
effects CONCURRENTLY (`Promise.all`, vendor/cordis/fiber.ts), so the
session-create effect detached `onAppend` racing the loop's final
`session/flush` — the re-loaded log showed crash-recovery's synthetic
`interrupted` closer instead of the real `disposed` reason. The disconnect
path happened to work (only `quiesce()` ran), but the contract must hold
uniformly.

Fix: fold the session lifecycle INTO the agent's single composite effect.
`SessionStore` now exposes `prepare` (validate + construct, no store entry),
`enter` (attach onAppend + store, returns detach), and `announce` (emit
session/created), replacing the sibling-effect `createOwned`. `AgentLoop.start`
builds ONE effect that yields, in order: session-detach, register, then
stop-and-`await agent.done`. LIFO disposal runs them as an ORDERED chain (the
runtime awaits each disposer's promise before the next), so the loop is
stopped and awaited to exit — its closing flush captured through the still-
attached onAppend — BEFORE the session detaches, whether the trigger is the
handle's dispose() OR a fiber unload. The config path uses prepare()+start
too, so it gets the same ordered teardown. All three factory entrypoints now
funnel through the one composite builder.

The mid-turn durability test asserts the REAL `disposed` reason lands on disk
(not a recovered `interrupted` substitute), proving the closing event was
captured rather than reconstructed.
2026-06-20 07:12:29 +08:00
2026-06-16 14:55:37 +08:00
2026-06-16 14:55:37 +08:00
2026-06-16 14:55:37 +08:00
2026-06-16 14:55:37 +08:00

DeepSeek Harness

Monorepo for the DeepSeek Harness group.

Projects

  • DeepSeek Code — DeepSeek's coding agent product.

Development

This monorepo is built on the Cordis framework (vendored as source under vendor/), microkernel-style: everything is a plugin.

pnpm install
pnpm run test          # vitest
pnpm run demo:echo     # runnable echo-agent example (no API key needed)
pnpm run demo:coding   # the real DeepSeek coding agent (needs DEEPSEEK_API_KEY)

For humans, start with the development guide for local setup, hooks, environment variables, and quality gates, then read the architecture design before package work. Local context lives in packages/ and vendor/.

For agents, follow AGENTS.md.

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