ResourceWorldResetter

v4.0.1 focuses on cross-version compatibility and safer deployment.

What changed:

• Dual target support:
• Minecraft 1.21.1+ servers
• 26.1+ API build line
• Build improvements for choosing API target at compile time
• Validation tasks added to check both compatibility targets
• Metadata/docs cleanup to match actual supported versions

This is a patch release. No command or config migration changes from v4.0.0.