Add comprehensive integration tests that verify NATSEventBus behavior
with a real NATS server. Tests cover:
- Cross-node event delivery (multiple NATSEventBus instances)
- Namespace isolation with single and multiple NATS connections
- High-throughput scenarios (1000 events)
- Event ordering within namespace
- No cross-namespace leakage verification
- Concurrent publish/subscribe operations
- Multiple subscribers to same namespace
- Event metadata preservation across NATS
- Large event payload handling (100KB)
- Subscribe/unsubscribe lifecycle
- Reconnection behavior
- Graceful degradation under load
- Benchmarks for publish and publish-receive
Tests require a running NATS server and are tagged with +build integration.
Run with: go test -tags=integration -v ./...
Closes#18
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
