Node-RED Dashboard State Trail Chart

node-red-contrib-ui-state-trail is a Node-RED dashboard UI node that renders a Gantt-type chart to visualize the historical changes of a state over a configurable time period. It is designed for displaying single-line state timelines, such as the operational status (on/off, running/stopped) of a device or process. The current stable version is 1.0.2. As a Node-RED contrib node, it typically receives updates on an as-needed basis rather than a strict release cadence, focusing on stability and new features. Key differentiators include its ability to accept both simple and timestamped historical data, customizable legend display (showing all states, current states, or latest state), state aggregation for performance, and optional persistent data storage when Node-RED's context storage is properly configured. It supports string, number, and boolean state types, which are treated distinctly.