feat: 添加密码验证诊断端点

目的：
- 系统化调试密码验证失败问题
- 验证passwordEncoder是否正确工作
- 收集诊断数据以定位根本原因

诊断端点：
- GET /api/diagnostic/password
- 测试密码: Test@123
- 数据库哈希: $2a$12$...
- 返回验证结果和编码器类型

novalon-manage-api/manage-app/src/main/java/cn/novalon/manage/app/config/SystemRouter.java

@@ -49,9 +49,13 @@ public class SystemRouter {
             SysNoticeHandler noticeHandler,
             SysUserMessageHandler messageHandler,
             SysFileHandler fileHandler,
-            SysPermissionHandler permissionHandler) {
+            SysPermissionHandler permissionHandler,
+            cn.novalon.manage.sys.handler.auth.PasswordDiagnosticHandler passwordDiagnosticHandler) {
         
         return route()
+                // ========== 诊断路由 ==========
+                .GET("/api/diagnostic/password", passwordDiagnosticHandler::diagnose)
+                
                 // ========== 字典路由 ==========
                 .GET("/api/dictionaries", dictionaryHandler::getAllDictionaries)
                 .GET("/api/dictionaries/{id}", dictionaryHandler::getDictionaryById)

novalon-manage-api/manage-sys/src/main/java/cn/novalon/manage/sys/handler/auth/PasswordDiagnosticHandler.java

@@ -0,0 +1,44 @@
+package cn.novalon.manage.sys.handler.auth;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.stereotype.Component;
+import org.springframework.web.reactive.function.server.ServerRequest;
+import org.springframework.web.reactive.function.server.ServerResponse;
+import reactor.core.publisher.Mono;
+
+@Component
+public class PasswordDiagnosticHandler {
+
+    private static final Logger logger = LoggerFactory.getLogger(PasswordDiagnosticHandler.java);
+    private final PasswordEncoder passwordEncoder;
+
+    public PasswordDiagnosticHandler(PasswordEncoder passwordEncoder) {
+        this.passwordEncoder = passwordEncoder;
+        logger.info("PasswordDiagnosticHandler initialized with encoder: {}", passwordEncoder.getClass().getName());
+    }
+
+    public Mono<ServerResponse> diagnose(ServerRequest request) {
+        String testPassword = "Test@123";
+        String dbHash = "$2a$12$nZ1EMUpZQljbnEdIKzH72eHlDJKUmHmHppnTTVth/SlHs5VpSAr8C";
+        
+        logger.info("=== Password Diagnostic Start ===");
+        logger.info("Test password: {}", testPassword);
+        logger.info("DB hash: {}", dbHash);
+        logger.info("Encoder type: {}", passwordEncoder.getClass().getName());
+        
+        boolean matches = passwordEncoder.matches(testPassword, dbHash);
+        
+        logger.info("Match result: {}", matches);
+        logger.info("=== Password Diagnostic End ===");
+        
+        return ServerResponse.ok()
+                .bodyValue(java.util.Map.of(
+                    "testPassword", testPassword,
+                    "dbHash", dbHash,
+                    "encoderType", passwordEncoder.getClass().getName(),
+                    "matches", matches
+                ));
+    }
+}