Tianyi Cui
706691a7df
Codex convergence round 1 on the review-response commits: agent()'s post-acquire window was real and unguarded. `await acquireSlot()` yields at least one microtask tick even when a slot is free (and a queued waiter resumes a tick after its release), so a cancel() landing in that tick let the continuation start a child carrying an ALREADY-aborted signal — the in-code comment claimed the window could not exist. A provider that subscribes only to future abort events (the test stub; the seam does not promise pre-aborted-signal handling) would never settle such a child, leaking it until the dispose grace abandoned the run, and a backend that misses the pre-aborted signal would burn a full model turn after the user cancelled. agent() now re-checks isCancelled() immediately after the acquire (inside the slot-owning try, so the finally still releases), making every post-cancel path reject before subagents.start. New deterministic regression: cancel() in the same synchronous frame as start() lands in the free-slot await tick — the run settles cancelled with ZERO children started (previously: one leaked child and a grace-delayed settle). The raced-release test's comment now states what it actually pins (the queued-waiter rejection path). Also aligns the RFC's auto-concurrency formula with the code (min(16, max(1, availableParallelism() - 2))).
DeepSeek Harness
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The DeepSeek Harness SDK is a plugin-based SDK for building agent harnesses.
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:repl # REPL agent demo (needs DEEPSEEK_API_KEY)
pnpm run demo:acp # ACP server agent demo (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.