Return clone-safe persona spawn payloads

src/main/broker.test.ts

@@ -220,6 +220,29 @@ async function attachCloud(manager: BrokerManager, agents: string[] = []): Promi
   return lastConstructed()
 }
 
+async function writeAgentWorkforceFixture(projectDir: string): Promise<void> {
+  const binDir = join(projectDir, 'node_modules', '.bin')
+  const posixBin = join(binDir, 'agentworkforce')
+  const winBin = join(binDir, 'agentworkforce.cmd')
+  const jsBin = join(binDir, 'agentworkforce.js')
+  const script = [
+    'const command = process.argv[2]',
+    "if (command === 'show') {",
+    "  console.log(JSON.stringify({ spec: { id: 'autonomous-actor', harness: 'claude' } }))",
+    '} else {',
+    "  console.log(JSON.stringify({ personas: [{ persona: 'autonomous-actor', harness: 'claude' }] }))",
+    '}'
+  ].join('\n')
+
+  await mkdir(binDir, { recursive: true })
+  await writeFile(jsBin, script)
+  await writeFile(posixBin, `#!/usr/bin/env node\n${script}\n`)
+  await writeFile(winBin, `@echo off\r\nnode "%~dp0agentworkforce.js" %*\r\n`)
+  await chmod(jsBin, 0o755)
+  await chmod(posixBin, 0o755)
+  await chmod(winBin, 0o755)
+}
+
 describe('resolveAgentRelayMcpCommand', () => {
   let tempDir: string | null = null
   let extraTempDir: string | null = null
@@ -328,6 +351,8 @@ describe('resolveAgentRelayMcpCommand', () => {
 })
 
 describe('BrokerManager local + cloud coexistence', () => {
+  let personaTempDir: string | null = null
+
   beforeEach(() => {
     mock.state.spawnedClients.length = 0
     mock.state.constructedClients.length = 0
@@ -340,6 +365,11 @@ describe('BrokerManager local + cloud coexistence', () => {
     mock.HarnessDriverClient.connect.mockClear()
   })
 
+  afterEach(async () => {
+    if (personaTempDir) await rm(personaTempDir, { recursive: true, force: true })
+    personaTempDir = null
+  })
+
   it('keeps the local session alive when a cloud sandbox attaches', async () => {
     const manager = new BrokerManager()
     const local = await startLocal(manager, ['local-agent'])
@@ -565,6 +595,78 @@ describe('BrokerManager local + cloud coexistence', () => {
     await manager.shutdown()
   })
 
+  it('returns a clone-safe payload when spawning a workforce persona', async () => {
+    personaTempDir = await mkdtemp(join(tmpdir(), 'pear-persona-spawn-'))
+    await writeAgentWorkforceFixture(personaTempDir)
+
+    const manager = new BrokerManager()
+    mock.state.nextLocalAgents = []
+    await manager.start(PROJECT_ID, personaTempDir, 'pear-project-1', undefined as never, [])
+    const local = lastSpawned()
+    local.spawnPty.mockImplementationOnce(async (input: { name: string }) => {
+      local.agentNames.push(input.name)
+      return {
+        name: input.name,
+        runtime: 'pty',
+        cli: 'agentworkforce',
+        nonCloneable: () => undefined
+      }
+    })
+
+    const result = await manager.spawnPersona(PROJECT_ID, 'autonomous-actor')
+
+    expect(result).toEqual({
+      name: 'autonomous-actor',
+      runtime: 'pty',
+      cli: 'claude'
+    })
+    expect(() => structuredClone(result)).not.toThrow()
+
+    await manager.shutdown()
+  })
+
+  it('coalesces concurrent duplicate workforce persona spawn requests', async () => {
+    personaTempDir = await mkdtemp(join(tmpdir(), 'pear-persona-spawn-'))
+    await writeAgentWorkforceFixture(personaTempDir)
+
+    const manager = new BrokerManager()
+    mock.state.nextLocalAgents = []
+    await manager.start(PROJECT_ID, personaTempDir, 'pear-project-1', undefined as never, [])
+    const local = lastSpawned()
+    let releaseSpawn!: () => void
+    local.spawnPty.mockImplementationOnce(async (input: { name: string }) => {
+      await new Promise<void>((resolve) => {
+        releaseSpawn = resolve
+      })
+      local.agentNames.push(input.name)
+      return {
+        name: input.name,
+        runtime: 'pty',
+        cli: 'agentworkforce',
+        nonCloneable: () => undefined
+      }
+    })
+
+    const first = manager.spawnPersona(PROJECT_ID, 'autonomous-actor')
+    const second = manager.spawnPersona(PROJECT_ID, 'autonomous-actor')
+    await Promise.resolve()
+    await Promise.resolve()
+
+    expect(local.spawnPty).toHaveBeenCalledTimes(1)
+    releaseSpawn()
+    const results = await Promise.all([first, second])
+
+    expect(results).toEqual([
+      { name: 'autonomous-actor', runtime: 'pty', cli: 'claude' },
+      { name: 'autonomous-actor', runtime: 'pty', cli: 'claude' }
+    ])
+    expect(() => structuredClone(results[0])).not.toThrow()
+    expect(() => structuredClone(results[1])).not.toThrow()
+    expect(local.agentNames).toEqual(['autonomous-actor'])
+
+    await manager.shutdown()
+  })
+
   it('spawning with broker: cloud fails clearly when no sandbox is attached', async () => {
     const manager = new BrokerManager()
     await startLocal(manager)

src/main/broker.ts

@@ -389,10 +389,41 @@ function spawnRequestKey(
   })
 }
 
+function personaSpawnRequestKey(projectId: string, personaId: string): string {
+  return JSON.stringify({
+    projectId,
+    personaId
+  })
+}
+
 function isRecord(value: unknown): value is Record<string, unknown> {
   return typeof value === 'object' && value !== null
 }
 
+type BrokerSpawnResult = {
+  name: string
+  runtime: string
+  cli?: string
+}
+
+function normalizeSpawnPtyResult(value: unknown, fallbackName: string, cli?: string): BrokerSpawnResult {
+  const record = isRecord(value) ? value : {}
+  const name = typeof record.name === 'string' && record.name.trim()
+    ? record.name.trim()
+    : fallbackName
+  const runtime = typeof record.runtime === 'string' && record.runtime.trim()
+    ? record.runtime.trim()
+    : 'pty'
+  const result: BrokerSpawnResult = { name, runtime }
+  const resolvedCli = typeof cli === 'string' && cli.trim()
+    ? cli.trim()
+    : typeof record.cli === 'string' && record.cli.trim()
+      ? record.cli.trim()
+      : undefined
+  if (resolvedCli) result.cli = resolvedCli
+  return result
+}
+
 function brokerEventString(event: BrokerEvent, key: string): string | undefined {
   const value = (event as unknown as Record<string, unknown>)[key]
   return typeof value === 'string' ? value : undefined
@@ -1176,7 +1207,7 @@ export class BrokerManager {
   private sessions = new Map<string, BrokerSession>()
   private startPromises = new Map<string, Promise<boolean | void>>()
   private revivePromises = new Map<string, Promise<boolean>>()
-  private inFlightSpawnRequests = new Map<string, Promise<{ name: string; runtime: string }>>()
+  private inFlightSpawnRequests = new Map<string, Promise<BrokerSpawnResult>>()
   // Which broker sessions (by session key) an agent name is registered on.
   // Both a project's local and cloud brokers join the same relay workspace,
   // so agent names are project-unique in practice — the set tracks which
@@ -2306,12 +2337,12 @@ export class BrokerManager {
     projectId: string,
     spawnInput: SpawnPtyInput & { broker?: 'local' | 'cloud' },
     options: { parentAgentName?: string } = {}
-  ): Promise<{ name: string; runtime: string }> {
+  ): Promise<BrokerSpawnResult> {
     const requestKey = spawnRequestKey(projectId, spawnInput, options)
     const inFlight = this.inFlightSpawnRequests.get(requestKey)
     if (inFlight) return inFlight
 
-    let promise!: Promise<{ name: string; runtime: string }>
+    let promise!: Promise<BrokerSpawnResult>
     promise = this.spawnAgentOnce(projectId, spawnInput, options).finally(() => {
       if (this.inFlightSpawnRequests.get(requestKey) === promise) {
         this.inFlightSpawnRequests.delete(requestKey)
@@ -2325,7 +2356,7 @@ export class BrokerManager {
     projectId: string,
     spawnInput: SpawnPtyInput & { broker?: 'local' | 'cloud' },
     options: { parentAgentName?: string } = {}
-  ): Promise<{ name: string; runtime: string }> {
+  ): Promise<BrokerSpawnResult> {
     // `broker` selects which of the project's sessions the agent spawns on.
     // Default: local-first via getSessionForProject (cloud only when no local
     // broker is running, preserving the cloud-only flow).
@@ -2377,7 +2408,8 @@ export class BrokerManager {
           )
         }
         const spawned = await session.client.spawnPty(nextInput)
-        const spawnedName = spawned.name || nextInput.name
+        const safeSpawned = normalizeSpawnPtyResult(spawned, nextInput.name)
+        const spawnedName = safeSpawned.name
         this.rememberAgentSession(spawnedName, sessionKeyFor(session))
         const burnInput = { ...nextInput, name: spawnedName }
         const lineage = session.pearLineage.get(spawnedName)
@@ -2393,12 +2425,7 @@ export class BrokerManager {
         ).catch((err) => {
           console.warn('[burn-spawn-hook] post-spawn burn stamp failed:', err)
         })
-        return {
-          name: spawnedName,
-          runtime: typeof spawned.runtime === 'string' && spawned.runtime.trim()
-            ? spawned.runtime
-            : 'pty'
-        }
+        return safeSpawned
       } catch (err) {
         if (!isAgentNameConflict(err)) {
           throw buildSpawnFailureError(err, nextInput, session.cloudSandboxId ? 'cloud' : 'local')
@@ -2425,13 +2452,29 @@ export class BrokerManager {
     }
   }
 
-  async spawnPersona(projectId: string, personaId: string): Promise<{ name: string; runtime: string; cli?: string }> {
-    const session = this.getSessionForProject(projectId)
+  async spawnPersona(projectId: string, personaId: string): Promise<BrokerSpawnResult> {
     const trimmedPersonaId = personaId.trim()
     if (!trimmedPersonaId) {
       throw new Error('Persona id is required')
     }
 
+    const requestKey = personaSpawnRequestKey(projectId, trimmedPersonaId)
+    const inFlight = this.inFlightSpawnRequests.get(requestKey)
+    if (inFlight) return inFlight
+
+    let promise!: Promise<BrokerSpawnResult>
+    promise = this.spawnPersonaOnce(projectId, trimmedPersonaId).finally(() => {
+      if (this.inFlightSpawnRequests.get(requestKey) === promise) {
+        this.inFlightSpawnRequests.delete(requestKey)
+      }
+    })
+    this.inFlightSpawnRequests.set(requestKey, promise)
+    return promise
+  }
+
+  private async spawnPersonaOnce(projectId: string, trimmedPersonaId: string): Promise<BrokerSpawnResult> {
+    const session = this.getSessionForProject(projectId)
+
     const command = resolveAgentWorkforceCommand(session.cwd)
     const persona = findWorkforcePersona(session.cwd, trimmedPersonaId, command)
 
@@ -2478,7 +2521,7 @@ export class BrokerManager {
       command: { cli: string; args: string[] }
       resolvedHarness: string
     }
-  ): Promise<{ name: string; runtime: string; cli?: string }> {
+  ): Promise<BrokerSpawnResult> {
     const existingNames = new Set(
       (await session.client.listAgents()).map((agent) => agent.name)
     )
@@ -2495,15 +2538,9 @@ export class BrokerManager {
     for (let attempt = 0; attempt < 20; attempt += 1) {
       try {
         const spawned = await session.client.spawnPty(nextInput)
-        const spawnedName = spawned.name || nextInput.name
-        this.rememberAgentSession(spawnedName, sessionKeyFor(session))
-        return {
-          name: spawnedName,
-          runtime: typeof spawned.runtime === 'string' && spawned.runtime.trim()
-            ? spawned.runtime
-            : 'pty',
-          cli: input.resolvedHarness
-        }
+        const safeSpawned = normalizeSpawnPtyResult(spawned, nextInput.name, input.resolvedHarness)
+        this.rememberAgentSession(safeSpawned.name, sessionKeyFor(session))
+        return safeSpawned
       } catch (err) {
         if (!isAgentNameConflict(err)) {
           throw err