Cloud Build Worker Pool Integration

[base698]

Is your feature request related to a problem? Please describe.

When deploying Agent Engines because there’s no way to specify a custom Cloud Build worker pool. This prevents deploying in environments that require private worker pools for security, compliance, or network connectivity to private resources.

Describe the solution you’d like

Add an optional worker_pool parameter to agent_engines.create():

from vertexai import agent_engines

remote_app = agent_engines.create(
    agent_engine=root_agent,
    requirements=[
        "google-cloud-aiplatform[adk,agent_engines]",
    ],
    worker_pool="projects/my-project/locations/us-central1/workerPools/my-private-pool"
)

This should accept the full worker pool resource name and pass it to the underlying Cloud Build process.

Describe alternatives you’ve considered

• Manual Cloud Build configuration (loses Agent Engines integration)