fix(user): invalidate user and token caches when disabling user

When an admin disables/deletes/promotes/demotes a user via ManageUser,
explicitly evict the user cache and all of the user's token caches from
Redis. This prevents a disabled user from continuing to make successful
API requests until the user cache TTL expires, and ensures subsequent
requests reload fresh status from the database.

model/token.go

@@ -480,3 +480,32 @@ func GetTokenKeysByIds(ids []int, userId int) ([]Token, error) {
 		Find(&tokens).Error
 	return tokens, err
 }
+
+// InvalidateUserTokensCache 清理指定用户所有令牌在 Redis 中的缓存，
+// 配合 InvalidateUserCache 使用，可在用户被禁用/删除时立即阻断其令牌的请求。
+// 下一次请求将从数据库重新加载令牌及用户状态，从而立即识别出被禁用的用户。
+func InvalidateUserTokensCache(userId int) error {
+	if !common.RedisEnabled {
+		return nil
+	}
+	if userId <= 0 {
+		return errors.New("userId 无效")
+	}
+	var tokens []Token
+	if err := DB.Unscoped().
+		Select("id", commonKeyCol).
+		Where("user_id = ?", userId).
+		Find(&tokens).Error; err != nil {
+		return err
+	}
+	var firstErr error
+	for _, t := range tokens {
+		if t.Key == "" {
+			continue
+		}
+		if err := cacheDeleteToken(t.Key); err != nil && firstErr == nil {
+			firstErr = err
+		}
+	}
+	return firstErr
+}

model/user_cache.go

@@ -57,6 +57,12 @@ func invalidateUserCache(userId int) error {
 	return common.RedisDelKey(getUserCacheKey(userId))
 }
 
+// InvalidateUserCache is the exported version of invalidateUserCache.
+// 供 controller 等上层包在用户状态变更（如禁用、删除、角色变更）后主动清理缓存。
+func InvalidateUserCache(userId int) error {
+	return invalidateUserCache(userId)
+}
+
 // updateUserCache updates all user cache fields using hash
 func updateUserCache(user User) error {
 	if !common.RedisEnabled {