refactor(internal): 分离runner

drivers/email/runner.go

@@ -0,0 +1,22 @@
+package email
+
+import (
+	"log"
+
+	"github.com/ssdomei232/goodBaby/model"
+)
+
+// EmailExecutor 邮件执行器
+type EmailExecutor struct{}
+
+func (e *EmailExecutor) GetType() string {
+	return "email"
+}
+
+func (e *EmailExecutor) Execute(rule *model.Rule) error {
+	log.Printf("执行邮件规则: %s (ID: %d)", rule.Name, rule.ID)
+
+	SendMail(rule)
+
+	return nil
+}