harness-rs-memory 0.0.62

Every memory and recall backend for harness-rs behind one door: open_memory(url) / open_recall(url) pick the store from the URL. JSONL files with no features; SQLite FTS5, SurrealDB (embedded or remote, BM25 + HNSW hybrid) and CortexDB each behind a feature, so you compile only the store you run.