Replace RealBrokerClient (which connects to localhost:50054) with MockBrokerService in test, so it runs without a live broker. All 209 risk tests now pass. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace RealBrokerClient (which connects to localhost:50054) with MockBrokerService in test, so it runs without a live broker. All 209 risk tests now pass. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>