Breaking changes

XML-based device support has been removed. The "non950type" module — covering both XMPP/XML and MQTT/XML protocol variants — has been deleted entirely. Devices that communicated via these older protocols are no longer supported. Only JSON-based MQTT devices ("950-type" and later) remain supported.
Node.js ≥ 22.15 is now required. Older versions are no longer supported.
The native node-canvas dependency has been removed entirely (see Map rendering below). Any project that relied on it being a transitive dependency must install it directly.

New features

The map rendering stack has been completely rewritten in pure JavaScript
- A custom framebuffer, PNG encoder, and rasterizer for map overlays replace the previous node-canvas dependency.
- Live map rendering with piece tracking and validation is now included, along with zstd decompression support for map data.
Promise-based command execution
- runAsync() provides a promise-based API for sending commands and awaiting their response.
- A new PendingCommandRegistry tracks in-flight commands and routes responses back to their callers.
Shared MQTT connections
- connectShared() allows multiple VacBot instances to share a single MQTT client connection, reducing resource usage when managing a fleet of devices.
Revised device support
- Optional auto-empty station capability
- smartType / productIotMap for internal IoT protocol resolution
- deviceType property on model definitions
- Heuristic model resolver for discovery and similarity analysis

Model dictionaries are now frozen at load time and deep-clone calls on hot paths have been removed, reducing GC pressure during high-frequency message handling.
MQTT client ID now includes a truncated device ID suffix to ensure uniqueness when connecting multiple devices.
Incoming MQTT messages with malformed JSON are now caught and logged rather than crashing the handler.
set-prefixed commands are excluded from command name normalization to prevent misrouting.

Docker support added with a Dockerfile and updated local deployment docs.
ESLint migrated to flat config format; linting added to CI.
Removed all native build dependencies from the Dockerfile (no more node-gyp, python, make, etc.).
Comprehensive unit test coverage added for map decoding, MQTT message parsing, command dispatch, and model capability regression testing.