feat: 更新验证码逻辑，优化邮件验证功能，增加验证码冷却时间，改进用户体验Closes #17

internal/middleware/captcha.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/cloudwego/hertz/pkg/app"
 	"github.com/sirupsen/logrus"
+	"github.com/snowykami/neo-blog/pkg/constant"
 	"github.com/snowykami/neo-blog/pkg/resps"
 	"github.com/snowykami/neo-blog/pkg/utils"
 )
@@ -14,8 +15,8 @@ func UseCaptcha() app.HandlerFunc {
 	captchaConfig := utils.Captcha.GetCaptchaConfigFromEnv()
 	return func(ctx context.Context, c *app.RequestContext) {
 		CaptchaToken := string(c.GetHeader("X-Captcha-Token"))
-		if utils.IsDevMode && CaptchaToken == utils.Env.Get("CAPTCHA_DEV_PASSCODE", "dev_passcode") {
-			// 开发模式直接通过密钥
+		if utils.IsDevMode && CaptchaToken == utils.Env.Get(constant.EnvKeyPasscode, constant.DefaultCaptchaDevPasscode) {
+			// 开发模式直接通过密钥，开启开发模式后，Captcha可被绕过，请注意安全
 			c.Next(ctx)
 			return
 		}

internal/service/user.go

@@ -114,7 +114,13 @@ func (s *UserService) UserRegister(req *dto.UserRegisterReq) (*dto.UserRegisterR
 
 func (s *UserService) RequestVerifyEmail(req *dto.VerifyEmailReq) (*dto.VerifyEmailResp, error) {
 	verifyCode := utils.RequestEmailVerify(req.Email)
-	template, err := static.RenderTemplate("email/verification-code.tmpl", map[string]interface{}{})
+	template, err := static.RenderTemplate("email/verification-code.tmpl", map[string]interface{}{
+		"Title":      "NEO-BLOG",
+		"Email":      req.Email,
+		"VerifyCode": verifyCode,
+		"Expire":     10,
+		"Details":    "你正在验证电子邮件所有权",
+	})
 	if err != nil {
 		return nil, errs.ErrInternalServer
 	}