v0.11.1

Performance

Cut subprocess worker startup time by ~55% (312ms → 140ms) and the full test suite by ~29% (132s → 94s).

• Lazy-load optional integrations (vgi_rpc.http, vgi_rpc.sentry, vgi_rpc.otel, vgi_rpc.s3, vgi_rpc.gcs) via module-level __getattr__ instead of importing them eagerly from vgi_rpc/__init__.py. Cuts import vgi_rpc cost roughly in half (~250ms → ~115ms) for callers that don't need those extras — including every pipe/subprocess worker.
• Test fixture service (Protocol, Impl, state classes) extracted from tests.test_rpc into tests/_fixture_service.py so subprocess fixtures don't drag pytest and conftest into worker import paths.

No public API changes. from vgi_rpc import http_connect, vgi_rpc.SentryConfig, from vgi_rpc import * all behave identically.