ragleap-tools v0.1.1

Fixed: ingest_document now passes metadata={"filename": filename} to ingest_text() - v0.1.0 passed no metadata at all, silently making every ingested document unfilterable by anything using metadata_filter. Added: search_documents tool (SearchConfig, make_search_tool) wrapping ragleap-rag's retrieve() for hybrid vector+keyword search, with an optional filename= parameter to scope search to a single document. 69 tests passing (was 51 in v0.1.0). Backward compatible - no breaking changes.