Tags: Dabblecraft2DevTeam/MapFileCleanup

fix: NullPointerException when MapMeta.getMapView() returns null

Some filled map items in item frames have hasMapView() return true but
getMapView() returns null, causing a NPE when calling getId() on the
null MapView. Added explicit null check and try/catch to skip maps
that can't be resolved instead of crashing the command.

initial release: MapFileCleanup v1.0.0

Standalone Paper 1.21.x plugin that cleans up orphaned map_*.dat files.
Designed for NavyCraft servers where ship radar/sonar/helm maps accumulate
in world/data/ and are never deleted when ships sink.

Features:
- Scheduled cleanup every 30 minutes (configurable)
- Scans loaded chunks for active maps in item frames
- Deletes orphaned map files older than 24 hours (configurable)
- Dry-run mode for safe preview
- /mapcleanup command with dryrun, stats, reload subcommands
- No NavyCraft dependency -- pure Paper API