- Compatibility checks: detect non-Paper servers and Minecraft versions below 1.21.9 and enter a restricted compatibility mode when needed (physical bodies and chunk-loading disabled).
- Added runtime guard for missing server API classes (prevents NoClassDefFoundError when the Mannequin class is absent).
- Admin-facing in-game compatibility warning (configurable) sent on enable and on admin join.
- Teleport commands updated: `/fpp tp` and `/fpp tph` now report when no physical body is available; `/fpp info` shows "No Body" when bodies are disabled.
- Command rename: `/fpp delete` renamed to `/fpp despawn` (permission node `fpp.delete` retained for compatibility).