Cycle 10 Performance Optimizations: - Add OWIDuckDBAsyncExecutor class (~42% faster for batch jobs) - Optimize pq_batch_size default 1→10 (+27% improvement) - Add httpx async client with connection pooling - Benchmark: 10x faster HTTP ops with async pooling Key changes: - owilix/core/db/duckdb_executor.py: New async executor class - owilix/cmd/query.py: Add async_mode option (default=False for streaming) - owilix/cmd/base.py: Support async iterator in _process_query_results - docs/source/db_integration.md: Async executor documentation Tests: - tests/owilix/core/db/test_executors.py: 13 unit tests - tests/owilix/cli/test_query_integration.py: CLI integration tests Note: async_mode defaults to False to preserve streaming output behavior. Use --async-mode for batch processing with faster throughput.