fix(chat): 为低VIP用户增加每日体验次数限制

- 在ChatServiceImpl.message()中新增VIP等级检查逻辑
- 使用Redis计数器实现每日额度控制，午夜自动重置
- 新增错误码VIP_TRIAL_LIMIT_REACHED(50030)
- 同步更新.gitignore忽略.omc目录

.gitignore

@@ -46,3 +46,4 @@ build/
 /voice-optimization-plan.md
 /docs/websocket-api.md
 /src/main/resources/static/ws-test.html
+/.omc/

.omc/ultrawork-state.json

@@ -2,6 +2,6 @@
   "active": true,
   "started_at": "2026-01-26T13:01:18.447Z",
   "original_prompt": "刚刚回滚了代码，现在AI陪聊角色评论需要使用KeyboardAiCompanionCommentLikeService添加一个评论点赞接口，用来记录点赞和取消点赞。 ulw",
-  "reinforcement_count": 2,
+  "reinforcement_count": 4,
-  "last_checked_at": "2026-01-26T13:21:19.022Z"
+  "last_checked_at": "2026-01-26T13:55:34.306Z"
 }

src/main/java/com/yolo/keyborad/common/ErrorCode.java

@@ -69,7 +69,8 @@ public enum ErrorCode {
     INVITE_CODE_USED_UP(50026, "邀请码使用次数已达上限"),
     INVITE_CODE_ALREADY_BOUND(50028, "您已绑定过邀请码，无法重复绑定"),
     INVITE_CODE_CANNOT_BIND_SELF(50029, "不能绑定自己的邀请码"),
-    RECEIPT_ALREADY_PROCESSED(50027, "收据已处理");
+    RECEIPT_ALREADY_PROCESSED(50027, "收据已处理"),
+    VIP_TRIAL_LIMIT_REACHED(50030, "今日体验次数已达上限，请开通会员");
 
     /**
      * 状态码

src/main/java/com/yolo/keyborad/service/impl/ChatServiceImpl.java

@@ -39,6 +39,11 @@ import reactor.core.scheduler.Schedulers;
 
 import java.math.BigDecimal;
 import java.io.ByteArrayInputStream;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
+import java.time.ZoneId;
+import java.time.temporal.ChronoUnit;
 import java.util.ArrayList;
 import java.util.Base64;
 import java.util.Date;
@@ -96,6 +101,8 @@ public class ChatServiceImpl implements ChatService {
     private static final String AUDIO_TASK_PREFIX = "audio:task:";
     private static final long AUDIO_TASK_EXPIRE_SECONDS = 3600; // 1小时过期
 
+    private static final String CHAT_DAILY_LIMIT_PREFIX = "chat:daily:limit:";
+
     private final NacosAppConfigCenter.DynamicAppConfig cfgHolder;
 
     public ChatServiceImpl(NacosAppConfigCenter.DynamicAppConfig cfgHolder) {
@@ -369,6 +376,43 @@ public class ChatServiceImpl implements ChatService {
     public ChatMessageVO message(String content, String userId, Long companionId) {
         log.info("同步对话请求, userId: {}, companionId: {}, content: {}", userId, companionId, content);
 
+        // ============ VIP等级检查 ============
+        AppConfig appConfig = cfgHolder.getRef().get();
+        KeyboardUser user = userService.getById(Long.parseLong(userId));
+
+        // 获取VIP等级（null视为0）
+        int vipLevel = user != null && user.getVipLevel() != null ? user.getVipLevel() : 0;
+
+        // 如果VIP等级 <= 1，需要限制每日体验次数
+        if (vipLevel <= 1) {
+            Integer dailyLimit = appConfig.getUserRegisterProperties().getVipFreeTrialTalk();
+            String redisKey = CHAT_DAILY_LIMIT_PREFIX + userId;
+
+            // 获取当前使用次数
+            String countStr = stringRedisTemplate.opsForValue().get(redisKey);
+            int currentCount = countStr != null ? Integer.parseInt(countStr) : 0;
+
+            // 检查是否超出限制
+            if (currentCount >= dailyLimit) {
+                log.warn("用户 {} VIP等级 {} 已达到每日体验次数限制 {}", userId, vipLevel, dailyLimit);
+                throw new BusinessException(ErrorCode.VIP_TRIAL_LIMIT_REACHED);
+            }
+
+            // 增加使用次数
+            Long newCount = stringRedisTemplate.opsForValue().increment(redisKey);
+
+            // 设置到午夜过期（只有第一次设置时需要设置过期时间）
+            if (newCount != null && newCount == 1) {
+                // 计算到今天午夜的剩余秒数
+                LocalDateTime now = LocalDateTime.now(ZoneId.of("America/New_York"));
+                LocalDateTime midnight = LocalDateTime.of(LocalDate.now(ZoneId.of("America/New_York")).plusDays(1), LocalTime.MIDNIGHT);
+                long secondsUntilMidnight = ChronoUnit.SECONDS.between(now, midnight);
+                stringRedisTemplate.expire(redisKey, secondsUntilMidnight, TimeUnit.SECONDS);
+            }
+
+            log.info("用户 {} VIP等级 {} 今日已使用 {}/{} 次", userId, vipLevel, newCount, dailyLimit);
+        }
+
         long startTime = System.currentTimeMillis();
 
         // 获取AI人设的系统提示词