Port to Paper 26.2 (2.0.0)

Snapshot of the 26.2 port published on Modrinth as 2.0.0 on 2026-08-06.
Built against paper-api 26.2.build.100-stable on Java 25. The changes had
only lived in the working tree on HPDebian (/root/mc-26.2/repos); this
commit records them as they were shipped. Details are in the 2.0.0 section
of the Modrinth changelog.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

dependency-reduced-pom.xml

@@ -18,13 +18,13 @@
         <artifactId>maven-compiler-plugin</artifactId>
         <version>3.12.1</version>
         <configuration>
-          <source>21</source>
-          <target>21</target>
+          <source>25</source>
+          <target>25</target>
         </configuration>
       </plugin>
       <plugin>
         <artifactId>maven-shade-plugin</artifactId>
-        <version>3.5.1</version>
+        <version>3.6.2</version>
         <executions>
           <execution>
             <phase>package</phase>
@@ -72,7 +72,7 @@
     <dependency>
       <groupId>io.papermc.paper</groupId>
       <artifactId>paper-api</artifactId>
-      <version>1.21.1-R0.1-SNAPSHOT</version>
+      <version>26.2.build.100-stable</version>
       <scope>provided</scope>
     </dependency>
     <dependency>
@@ -83,9 +83,9 @@
     </dependency>
   </dependencies>
   <properties>
-    <maven.compiler.target>21</maven.compiler.target>
-    <maven.compiler.source>21</maven.compiler.source>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <paper.version>1.21.1-R0.1-SNAPSHOT</paper.version>
+    <paper.version>26.2.build.100-stable</paper.version>
+    <maven.compiler.target>25</maven.compiler.target>
+    <maven.compiler.source>25</maven.compiler.source>
   </properties>
 </project>