Show Feishu app visibility and preserve sync toggle

backend/internal/model/model.go

@@ -41,15 +41,17 @@ type IdentityProfile struct {
 
 // FeishuDirectorySync tracks a single application's import schedule and outcome.
 type FeishuDirectorySync struct {
-	ID          uint       `gorm:"primaryKey"`
-	Enabled     bool       `json:"enabled"`
-	Issuer      string     `gorm:"size:256"`
-	AppID       string     `gorm:"size:128"`
-	LastAttempt *time.Time `json:"last_attempt"`
-	LastSuccess *time.Time `json:"last_success"`
-	LastError   string     `gorm:"size:512" json:"last_error"`
-	Departments int        `json:"departments"`
-	Members     int        `json:"members"`
+	ID                 uint       `gorm:"primaryKey"`
+	Enabled            bool       `json:"enabled"`
+	Issuer             string     `gorm:"size:256"`
+	AppID              string     `gorm:"size:128"`
+	LastAttempt        *time.Time `json:"last_attempt"`
+	LastSuccess        *time.Time `json:"last_success"`
+	LastError          string     `gorm:"size:512" json:"last_error"`
+	Departments        int        `json:"departments"`
+	Members            int        `json:"members"`
+	VisibleDepartments int        `json:"visible_departments"`
+	VisibleUsers       int        `json:"visible_users"`
 }
 
 type FeishuDepartment struct {