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Merge branch 'master' into feat/tui-package

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Tianyi Cui
2026-07-19 12:31:53 +08:00
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parent 14542b2503 7bf0250604
commit 1bdee08c21
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docs/rfc/implemented/feature/2026-06-21-subagent-capability-seam.md
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Status: implemented
> The full seam is shipped: the `dsh-subagent` interface, the `dsh-subagent-mock` test backend, and the `dsh-tool-subagent` consumer; the two in-process backends (`dsh-subagent-spawn`, `dsh-subagent-fork`); the nested-agent snapshot infrastructure ([per-session snapshot replay](../testing/2026-06-22-subagent-snapshot-replay.md)); and the out-of-process `dsh-subagent-acp` backend ([its RFC](2026-06-22-acp-subagent-backend.md)).
> The full seam is shipped: the `dsh-subagent` interface and `dsh-tool-subagent` consumer; the two in-process backends (`dsh-subagent-spawn`, `dsh-subagent-fork`); the nested-agent snapshot infrastructure ([per-session snapshot replay](../testing/2026-06-22-subagent-snapshot-replay.md)); and the out-of-process `dsh-subagent-acp` backend ([its RFC](2026-06-22-acp-subagent-backend.md)).
## Problem
@@ -32,7 +32,6 @@ A new package group `packages/subagent/`:
| `@deepseek-ai/dsh-subagent-spawn` | implementation: a fresh in-process child via `ctx.agents.create` |
| `@deepseek-ai/dsh-subagent-fork` | implementation: an in-process child seeded with a snapshot of the parent's log |
| `@deepseek-ai/dsh-subagent-acp` | implementation: an ACP client driving a configured child process |
| `@deepseek-ai/dsh-subagent-mock` | support: a scripted provider for testing the seam through the real load path |
| `@deepseek-ai/dsh-tool-subagent` | consumer: the model-facing `subagent` tool over `ctx.subagents` |
### The primitive: async `start → SubagentRun`
@@ -62,7 +61,7 @@ Each subagent runs in its **own `Session`** (own id, `parentSession` lineage), p
## Testing
The seam is tested through the real Cordis Loader/export path, which catches the export-shape failure described in [postmortem 0001](../../../postmortem/0001-acp-default-export-drops-inject.md). Registry tests cover reload safety, duplicate names, and start-time capability rejection; nested-agent scenarios replay keylessly through [per-session snapshot replay](../testing/2026-06-22-subagent-snapshot-replay.md); in-process backends also have real-loop unit tests and a with-key e2e.
Registry and tool tests replace only the nondeterministic child boundary with a package-local scripted provider while exercising the real `SubagentService`, lifecycle, task integration, and model-facing tool. Provider and consumer export shapes retain their Loader regression coverage for the failure described in [postmortem 0001](../../../postmortem/0001-acp-default-export-drops-inject.md). Registry tests cover reload safety, duplicate names, and start-time capability rejection; nested-agent scenarios replay keylessly through [per-session snapshot replay](../testing/2026-06-22-subagent-snapshot-replay.md); in-process backends also have real-loop unit tests and a with-key e2e.
## Consequences