feat: 添加 builtin-tools 增强与测试覆盖

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/builtin-tools/src/tools/shared/__tests__/spawnMultiAgent.test.ts

@@ -0,0 +1,54 @@
+import { afterEach, beforeEach, describe, expect, test } from 'bun:test'
+import { rmSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { spawnTeammate } from '../spawnMultiAgent'
+
+let tempHome: string
+let previousConfigDir: string | undefined
+
+beforeEach(() => {
+  previousConfigDir = process.env.CLAUDE_CONFIG_DIR
+  tempHome = join(tmpdir(), `spawn-multi-agent-${Date.now()}-${Math.random().toString(16).slice(2)}`)
+  process.env.CLAUDE_CONFIG_DIR = tempHome
+})
+
+afterEach(() => {
+  if (previousConfigDir === undefined) {
+    delete process.env.CLAUDE_CONFIG_DIR
+  } else {
+    process.env.CLAUDE_CONFIG_DIR = previousConfigDir
+  }
+  rmSync(tempHome, { recursive: true, force: true })
+})
+
+describe('spawnTeammate', () => {
+  test('fails before spawn side effects when the team file is missing', async () => {
+    let setAppStateCalled = false
+    const context = {
+      getAppState: () => ({
+        teamContext: undefined,
+      }),
+      setAppState: () => {
+        setAppStateCalled = true
+      },
+      options: {
+        agentDefinitions: {
+          activeAgents: [],
+        },
+      },
+    }
+
+    await expect(
+      spawnTeammate(
+        {
+          name: 'worker',
+          prompt: 'do work',
+          team_name: 'missing-team',
+        },
+        context as any,
+      ),
+    ).rejects.toThrow('Team "missing-team" does not exist')
+    expect(setAppStateCalled).toBe(false)
+  })
+})