Load editable blocklist from plugin data folder + moderation notify permission

[Geph]

Summary

The swear/slur blocklist lives only in the JAR (blocked-words.txt). Staff must rebuild to customize it. Profanity alerts go only to ops (Player#isOp).

Suggested approach

• On enable, copy/merge a default blocked-words.txt into plugins/WHIMC-Observations/
• Prefer the data-folder file (or merge with JAR defaults)
• Notify players with a permission such as whimc-observations.moderation.notify instead of (or in addition to) ops
• Optionally support /adminobservations reload to pick up list changes (see related reload issue)

Related

ObservationContentValidator, notifyOps