feat(imLoginFailureLog): 用户登录密码错误次数锁定与解锁能力（管理端）

- 安全策略登录限频由 JSON 文本改为结构化表单（次数/锁定分钟/窗口分钟），编辑校验同步扩展
- 失败日志新增解锁入口：/imLoginFailureLog/unlock 经 internal 通道调用 im-server 释放锁定
- 失败日志模型补充 accountHash 字段，解锁按钮按 risk_action=account_locked 展示
- 租户业务库初始化模板补充 im_login_lockouts 等表；新增解锁按钮菜单权限 SQL

server/api/admin/imconfiginternal/im_config.go

@@ -99,13 +99,21 @@ type SecurityPolicyReq struct {
 }
 
 type SecurityPolicyRes struct {
-	TenantID             int64                    `json:"tenant_id"`
-	TenantCode           string                   `json:"tenant_code"`
-	PolicyVersion        uint                     `json:"policy_version"`
-	GlobalFriendEnabled  bool                     `json:"global_friend_enabled"`
-	FriendDisabledPolicy map[string]interface{}   `json:"friend_disabled_policy"`
-	MessageCurfewEnabled bool                     `json:"message_curfew_enabled"`
-	CurfewRules          []*SecurityCurfewRuleRes `json:"curfew_rules"`
+	TenantID             int64                     `json:"tenant_id"`
+	TenantCode           string                    `json:"tenant_code"`
+	PolicyVersion        uint                      `json:"policy_version"`
+	GlobalFriendEnabled  bool                      `json:"global_friend_enabled"`
+	FriendDisabledPolicy map[string]interface{}    `json:"friend_disabled_policy"`
+	MessageCurfewEnabled bool                      `json:"message_curfew_enabled"`
+	LoginRateLimit       *SecurityLoginRateLimitRes `json:"login_rate_limit"`
+	CurfewRules          []*SecurityCurfewRuleRes  `json:"curfew_rules"`
+}
+
+type SecurityLoginRateLimitRes struct {
+	Enabled             bool `json:"enabled"`
+	PasswordMaxAttempts int  `json:"password_max_attempts"`
+	LockSeconds         int  `json:"lock_seconds"`
+	WindowSeconds       int  `json:"window_seconds"`
 }
 
 type SecurityCurfewRuleRes struct {

server/api/admin/imloginfailurelog/im_login_failure_log.go

@@ -35,3 +35,8 @@ type BanUserReq struct {
 	sysin.ImLoginFailureBanUserInp
 }
 type BanUserRes struct{ *sysin.ImUserCommandModel }
+type UnlockReq struct {
+	g.Meta `path:"/imLoginFailureLog/unlock" method:"post" tags:"IM登录失败日志" summary:"解锁登录失败锁定"`
+	sysin.ImLoginFailureUnlockInp
+}
+type UnlockRes struct{}