feat: include subagent in task_metadata when resuming sessions

When delegate-task resumes a session via session_id, the response task_metadata now includes a subagent field identifying which agent was running in the resumed session. This allows the parent agent to know what type of subagent it is continuing. - sync-continuation: uses resumeAgent extracted from session messages - background-continuation: uses task.agent from BackgroundTask object - Gracefully omits subagent when agent info is unavailable
2026-02-12 19:09:15 +09:00
parent 56d4dcffed
commit 9b53cac570
4 changed files with 205 additions and 2 deletions
@@ -0,0 +1,95 @@
+const { describe, test, expect, mock } = require("bun:test")
+
+describe("executeBackgroundContinuation - subagent metadata", () => {
+  test("includes subagent in task_metadata when task has agent", async () => {
+    //#given - mock manager.resume returning task with agent info
+    const mockManager = {
+      resume: async () => ({
+        id: "bg_task_001",
+        description: "oracle consultation",
+        agent: "oracle",
+        status: "running",
+        sessionID: "ses_resumed_123",
+      }),
+    }
+
+    const mockCtx = {
+      sessionID: "parent-session",
+      callID: "call-456",
+      metadata: mock(() => Promise.resolve()),
+    }
+
+    const mockExecutorCtx = {
+      manager: mockManager,
+    }
+
+    const parentContext = {
+      sessionID: "parent-session",
+      messageID: "msg-parent",
+      agent: "sisyphus",
+    }
+
+    const args = {
+      session_id: "ses_resumed_123",
+      prompt: "continue working",
+      description: "resume oracle",
+      load_skills: [],
+      run_in_background: true,
+    }
+
+    //#when - executeBackgroundContinuation completes
+    const { executeBackgroundContinuation } = require("./background-continuation")
+    const result = await executeBackgroundContinuation(args, mockCtx, mockExecutorCtx, parentContext)
+
+    //#then - task_metadata should contain subagent field
+    expect(result).toContain("<task_metadata>")
+    expect(result).toContain("subagent: oracle")
+    expect(result).toContain("session_id: ses_resumed_123")
+  })
+
+  test("omits subagent from task_metadata when task agent is undefined", async () => {
+    //#given - mock manager.resume returning task without agent
+    const mockManager = {
+      resume: async () => ({
+        id: "bg_task_002",
+        description: "unknown task",
+        agent: undefined,
+        status: "running",
+        sessionID: "ses_resumed_456",
+      }),
+    }
+
+    const mockCtx = {
+      sessionID: "parent-session",
+      callID: "call-789",
+      metadata: mock(() => Promise.resolve()),
+    }
+
+    const mockExecutorCtx = {
+      manager: mockManager,
+    }
+
+    const parentContext = {
+      sessionID: "parent-session",
+      messageID: "msg-parent",
+      agent: "sisyphus",
+    }
+
+    const args = {
+      session_id: "ses_resumed_456",
+      prompt: "continue",
+      description: "resume task",
+      load_skills: [],
+      run_in_background: true,
+    }
+
+    //#when - executeBackgroundContinuation completes without agent
+    const { executeBackgroundContinuation } = require("./background-continuation")
+    const result = await executeBackgroundContinuation(args, mockCtx, mockExecutorCtx, parentContext)
+
+    //#then - task_metadata should NOT contain subagent field
+    expect(result).toContain("<task_metadata>")
+    expect(result).toContain("session_id: ses_resumed_456")
+    expect(result).not.toContain("subagent:")
+  })
+})