Merge pull request #2663 from deepseek-harness/feat/subagent-provider

让 subagent 按需发现并选择子 Agent 模型

examples/python-sdk-agent/cordis.yml

@@ -69,6 +69,7 @@
   config:
     provider: spawn
     toolName: subagent
+    enableModelSelection: true
     enableRunInBackground: false
 
 - id: tool-todo

examples/python-sdk-agent/tests/keyless-smoke.e2e.ts

@@ -144,7 +144,9 @@ describe('Python SDK dsh profile keyless smoke', () => {
           },
         },
       })
+      const tools = modelRequests[0]?.tools as { function?: { name?: string } }[]
       expect(modelRequests[0]?.max_tokens).toBe(1234)
+      expect(tools.map(tool => tool.function?.name)).toContain('list_subagent_models')
 
       child.stdin.write(`${JSON.stringify({ jsonrpc: '2.0', id: 3, method: 'shutdown' })}\n`)
       const shutdown = await waitForLine(lines, value => value.id === 3, () => stderr)

examples/python-sdk-agent/tests/snapshots/subagent-spawn-in-process/notifications.expected.jsonl

@@ -104,7 +104,7 @@
 {"method":"session.status","params":{"sessionId":"{{sessionId}}","status":"running"}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"turn/start","seq":3,"time":0,"data":{"turn":1}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"agent/inbox/spliced","seq":4,"time":0,"data":{"target":"next-turn","start":0,"removedCount":1,"inserted":[]}}}}
-{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"subagent/descriptor","seq":5,"time":0,"data":{"version":2,"mode":"one-shot","provider":"spawn","label":"echo probe"}}}}
+{"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"subagent/descriptor","seq":5,"time":0,"data":{"version":3,"mode":"one-shot","provider":"spawn","label":"echo probe"}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"step/start","seq":6,"time":0,"data":{"turn":1,"step":1}}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"user/message","seq":7,"time":0,"data":{"content":[{"type":"text","text":"Reply with exactly: child answer 42."}],"source":{"kind":"user"},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}}}
 {"method":"session.event","params":{"sessionId":"{{sessionId}}","event":{"type":"user/message","seq":8,"time":0,"data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}\". Some platform temporary areas may also be writable.\n\nApproval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`).\n\nYou are a delegated subagent: your permission scope was fixed when you were started and cannot be widened from inside this session — operations that require approval are rejected automatically. When the task needs access beyond that scope, do not retry the denied operation; state the limitation in your reply so the delegating agent can handle it."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt","form":"snapshot","sections":[{"name":"sandbox:policy","text":"Current DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}\". Some platform temporary areas may also be writable."},{"name":"approval:policy","text":"Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."},{"name":"subagent:delegation","text":"You are a delegated subagent: your permission scope was fixed when you were started and cannot be widened from inside this session — operations that require approval are rejected automatically. When the task needs access beyond that scope, do not retry the denied operation; state the limitation in your reply so the delegating agent can handle it."}]},"role":"user","id":"{{sessionId}}"},"surfaceOp":"append"}}}

examples/python-sdk-agent/tests/snapshots/subagent-spawn-in-process/session.1.jsonl

@@ -4,7 +4,7 @@
 {"type":"agent/inbox/spliced","data":{"target":"next-turn","start":0,"inserted":[{"content":[{"type":"text","text":"Reply with exactly: child answer 42."}],"source":{"kind":"user"},"role":"user","id":"7ae1698c-db1d-4fca-8404-3a9dece9c1d0"}]}}
 {"type":"turn/start","data":{"turn":1}}
 {"type":"agent/inbox/spliced","data":{"target":"next-turn","start":0,"removedCount":1,"inserted":[]}}
-{"type":"subagent/descriptor","data":{"version":2,"mode":"one-shot","provider":"spawn","label":"echo probe"}}
+{"type":"subagent/descriptor","data":{"version":3,"mode":"one-shot","provider":"spawn","label":"echo probe"}}
 {"type":"step/start","data":{"turn":1,"step":1}}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Reply with exactly: child answer 42."}],"source":{"kind":"user"},"role":"user","id":"7ae1698c-db1d-4fca-8404-3a9dece9c1d0"},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}\". Some platform temporary areas may also be writable.\n\nApproval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`).\n\nYou are a delegated subagent: your permission scope was fixed when you were started and cannot be widened from inside this session — operations that require approval are rejected automatically. When the task needs access beyond that scope, do not retry the denied operation; state the limitation in your reply so the delegating agent can handle it."}],"source":{"kind":"plugin","plugin":"@deepseek-ai/dsh-system-prompt","form":"snapshot","sections":[{"name":"sandbox:policy","text":"Current DSH file policy: workspace-write. Any available operation enforced by the DSH file sandbox may modify files under the session workspace: \"{{cwd}}\". Some platform temporary areas may also be writable."},{"name":"approval:policy","text":"Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."},{"name":"subagent:delegation","text":"You are a delegated subagent: your permission scope was fixed when you were started and cannot be widened from inside this session — operations that require approval are rejected automatically. When the task needs access beyond that scope, do not retry the denied operation; state the limitation in your reply so the delegating agent can handle it."}]},"role":"user","id":"dc291267-28a7-40f4-adac-cd856dbe0bba"},"surfaceOp":"append"}