v0.1.0

Initial open-source release.

Added

• MQTT 5.0 broker with embedded JSON document database
• Standalone agent mode with full CRUD operations (create, read, update, delete, list)
• Distributed clustering with 256-partition sharding and RF=2 replication
• QUIC transport for inter-node communication with mTLS
• Raft consensus for cluster coordination
• Cross-node pub/sub routing with topic index and wildcard subscriptions
• Schema validation (JSON Schema draft 2020-12)
• Unique constraints with distributed 2-phase protocol
• Cascade delete with cross-ownership protection
• Owner-aware access control per entity
• ACL/RBAC for MQTT topic authorization
• Password authentication (plaintext file and SCRAM-SHA-256)
• JWT authentication (HS256, HS384, RS256, RS384, ES256, ES384)
• Vault integration for transparent field-level encryption (AES-256-GCM)
• Session migration and cleanup on node departure
• QoS 0/1/2 with state replication across cluster
• Last Will and Testament support
• Retained messages with TTL-based dedup
• WebSocket transport
• TLS support (TCP and WebSocket)
• WASM client library (mqdb-wasm) for browser-based applications
• CLI with CRUD commands, benchmarking, cluster management, and dev tooling
• Change event subscriptions ($DB/{entity}/events/#)
• Filter operators: =, <>, >, <, >=, <=, ~ (glob), ? (null), !? (not null)
• Field projection on read and list operations
• Async pipelined benchmarking mode with QoS 1 backpressure