fix(service): 修复角色创建主键获取异常

创建角色改用 RETURNING id 显式取回主键，避免 PostgreSQL JDBC 对 RETURN_GENERATED_KEYS 追加 RETURNING * 导致 GeneratedKeyHolder.getKey() 抛 multiple keys 异常

src/main/java/com/wok/supportbot/service/CustomerServiceRoleService.java

@@ -5,13 +5,9 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.jdbc.core.JdbcTemplate;
-import org.springframework.jdbc.support.GeneratedKeyHolder;
-import org.springframework.jdbc.support.KeyHolder;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
-import java.sql.PreparedStatement;
-import java.sql.Statement;
 import java.util.ArrayList;
 import java.util.LinkedHashMap;
 import java.util.List;
@@ -114,23 +110,16 @@ public class CustomerServiceRoleService {
         String key = (roleKey == null || roleKey.trim().isEmpty())
                 ? "role_" + System.currentTimeMillis()
                 : roleKey.trim();
-        KeyHolder keyHolder = new GeneratedKeyHolder();
-        jdbcTemplate.update(con -> {
-            PreparedStatement ps = con.prepareStatement(
-                    "INSERT INTO customer_service_role (role_key, name, description, prompt, enabled) VALUES (?, ?, ?, ?, ?)",
-                    Statement.RETURN_GENERATED_KEYS);
-            ps.setString(1, key);
-            ps.setString(2, name.trim());
-            ps.setString(3, description);
-            ps.setString(4, prompt);
-            ps.setBoolean(5, enabled != null ? enabled : true);
-            return ps;
-        }, keyHolder);
-        Number generatedId = keyHolder.getKey();
+        // 使用 RETURNING id 显式取回主键，避免 PostgreSQL JDBC 对 RETURN_GENERATED_KEYS
+        // 追加 RETURNING *（返回整行多列），导致 GeneratedKeyHolder.getKey() 抛"multiple keys"异常
+        Long generatedId = jdbcTemplate.queryForObject(
+                "INSERT INTO customer_service_role (role_key, name, description, prompt, enabled) VALUES (?, ?, ?, ?, ?) RETURNING id",
+                Long.class,
+                key, name.trim(), description, prompt, enabled != null ? enabled : true);
         if (generatedId == null) {
             throw new RuntimeException("创建角色失败：无法获取自动生成的 ID");
         }
-        return generatedId.longValue();
+        return generatedId;
     }
 
     /**