Purpur Sentinel

Passive, explainable movement-pattern observation for Purpur servers.

Sentinel gives permitted operators bounded evidence of repeated suspicious on-foot horizontal movement and sustained unauthorized unsupported flight. It does not cancel movement, change flight permissions, punish players, persist player evidence, or export telemetry.

Development

Requires Java 25 and Node.js 20.

./gradlew clean check jar

The output JAR is written to build/libs/. Production installation and deployment are separately gated operations.