deepseek-harness/packages/bundle/headless

@deepseek-ai/dsh-headless

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The dsh one-shot bundle. cordis.patch.yml rides over dsh-base + dsh-web-app: it moves the webserver to an OS-assigned port (parallel runs never collide), silences the URL line, and inserts this package's headless-runner plugin (config {task}). The runner drives one task turn through the in-process API carrier (InProcessApiClient over toFetchHandler(ctx.apiProxy), so the full wire chain — serialization, zod, SSE framing — really runs), aggregates the turn's final assistant text, writes it to stdout, and requests exit (completed → 0, else 1) through the launcher-provided ctx.headlessIo seam. The Web composition stays mounted, so the running session is observable in a browser at the stderr-announced URL. The launcher patches the task text in (dsh --profile headless "task"), and fails loud when a task is given to a profile without this row.

Model Experience

None, as the runner submits the task as an ordinary user message over the shared composition; prompts and tools belong to the base/web bundles.

KV Cache effect

None; the runner adds nothing to the request prefix.

Known Limitations and Deferred Work

• One turn only — the runner anchors on the first message-triggered turn and exits at its end; queued follow-ups and multi-turn tasks are out of scope.
• ctx.headlessIo is launcher-owned — booting the headless profile outside the dsh launcher fails loud at activation until the host provides the seam.