feat: 领取记录清理、BaoTa第三路备选更新检查

- TreasureManager: forceCleanClaims()完整清理claimedSet+claimDb；reload()调用forceCleanClaims()
- UpdateChecker: 添加BaoTa HTML第三路备选通道，GitHub/Gitee限流后自动降级

pom.xml

@@ -11,7 +11,7 @@
     <packaging>jar</packaging>
 
     <properties>
-        <java.version>21</java.version>
+        <java.version>25</java.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
@@ -37,10 +37,10 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.11.0</version>
+                <version>3.14.0</version>
                 <configuration>
-                    <source>21</source>
-                    <target>21</target>
+                    <source>25</source>
+                    <target>25</target>
                 </configuration>
             </plugin>
         </plugins>