Implement integration test suite for Miroir with docker-compose:
- Updated docker-compose-dev.yml to use Meilisearch v1.37.0
- Created tests/integration.rs with comprehensive test coverage:
* Document round-trip (1000 docs)
* Search coverage across all shards (unique-keyword test)
* Facet aggregation (3 colors, sum = 100)
* Offset/limit paging
* Settings broadcast
* Task polling
* Health check
* Node failure test with RF=2
- Created docker-compose-dev-rf2.yml for RF=2/HA testing (6 nodes)
- Created dev-config-rf2.yaml for RF=2 configuration
- Created tests/README.md with documentation
Tests run against real Docker Compose stack:
cargo test --test integration -- --test-threads=1
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
