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Fixed

• Chat crash on Paper 26.x (ClassNotFoundException / AbstractMethodError in EngineChat$PaperChatListener): multiple layers of shade-related breakage were present and are fully resolved:
  • maven-shade rewrites net.kyori.adventure.* string literals in the bytecode constant pool to com.pvpindex.lib.adventure.*. At runtime Paper's classloader cannot find that relocated namespace, causing ClassNotFoundException. String literals are now constructed at runtime via String.valueOf concatenation so shade never sees the full class name in the constant pool.
  • The chat renderer was originally a raw 4-parameter lambda targeting ChatRenderer directly; LambdaMetafactory cannot reliably link it against Paper 26.x runtime classes. The renderer now uses ChatRenderer.viewerUnaware() and a Proxy-based InvocationHandler that implements only the 3-parameter ViewerUnaware.render method, eliminating cross-version descriptor mismatches.
  • EngineChat now contains zero net.kyori.adventure imports; all adventure interactions go through java.lang.reflect against classes loaded from Paper's own classloader, so shade has nothing to rewrite in type descriptors either.
• Chat listener rebuilt as clean OOP dual-path design: Paper/Folia servers use a PaperChatListener that installs a ChatRenderer.ViewerUnaware proxy; Spigot/Bukkit servers use a LegacyChatListener with AsyncPlayerChatEvent.setFormat. Reflection handles and the cached MiniMessage instance are resolved once at listener construction time to avoid per-message overhead.
• H2 database crash on first command (/f create, /f join, and any other command that saves a model): H2 2.x does not implement the VALUES(col) function reference inside ON DUPLICATE KEY UPDATE that Jaloquent generates, causing a JdbcSQLSyntaxErrorException (error code 42122) on every save against an H2 backend. Upsert SQL is now transparently rewritten to MERGE INTO … KEY(id) before execution, which H2 fully supports. MySQL/MariaDB backends are unaffected.

Changed

• Chat formatting is now disabled by default (factions.chat.show-tag: false in config.yml). Operators must opt in by setting show-tag: true. Previously it was enabled for all players by default.