Fix: Propagate ws_url in AgentServer.from_server_options

[kstonekuan]

Summary

This PR fixes a bug where the ws_url parameter from WorkerOptions was not being passed to the AgentServer constructor in AgentServer.from_server_options(). This caused runtime errors when ws_url was provided in WorkerOptions but not set in the environment variables.

Changes

• Updated AgentServer.from_server_options in livekit/agents/worker.py to explicitly pass ws_url=options.ws_url to the AgentServer constructor.

Testing

• Ran linting (ruff check), formatting (ruff format), and type checking (mypy) as per CONTRIBUTING.md.
• Ran the following script to verify the fix:

import os
import asyncio
from livekit.agents import AgentServer, WorkerOptions, JobContext

async def test_ws_url_propagation():
    # Clear environment variables to ensure we're testing WorkerOptions
    for key in ['LIVEKIT_URL', 'LIVEKIT_API_KEY', 'LIVEKIT_API_SECRET']:
        os.environ.pop(key, None)

    async def entrypoint(ctx: JobContext):
        pass

    worker_options = WorkerOptions(
        entrypoint_fnc=entrypoint,
        ws_url='wss://test-server.livekit.cloud',
        api_key='test-api-key',
        api_secret='test-api-secret',
    )

    # This should work without environment variables
    server = AgentServer.from_server_options(worker_options)
    
    # Verify that the ws_url was correctly set on the server instance
    assert server._ws_url == 'wss://test-server.livekit.cloud'
    print("✅ ws_url propagated correctly!")

if __name__ == '__main__':
    asyncio.run(test_ws_url_propagation())

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[theomonnom]

Thanks!