로그인 페이지 및 기능 구현

backend/internal/domain/auth_models.go

@@ -31,3 +31,31 @@ type QRInitResponse struct {
 	PendingRef string `json:"pendingRef"`
 	ExpiresIn  int    `json:"expiresIn"`
 }
+
+// Signup Flow Models
+
+type CheckEmailRequest struct {
+	Email string `json:"email"`
+}
+
+type SendSignupCodeRequest struct {
+	Target string `json:"target"` // Email or Phone
+	Type   string `json:"type"`   // "email" or "phone"
+}
+
+type VerifySignupCodeRequest struct {
+	Target string `json:"target"` // Email or Phone
+	Type   string `json:"type"`   // "email" or "phone"
+	Code   string `json:"code"`
+}
+
+type SignupRequest struct {
+	Email           string `json:"email"`
+	Password        string `json:"password"`
+	Name            string `json:"name"`
+	Phone           string `json:"phone"`
+	AffiliationType string `json:"affiliationType"` // "AFFILIATE" or "GENERAL"
+	CompanyCode     string `json:"companyCode,omitempty"`
+	Department      string `json:"department"`
+	TermsAccepted   bool   `json:"termsAccepted"`
+}

backend/internal/handler/auth_handler.go

@@ -97,6 +97,11 @@ func (h *AuthHandler) CheckEmail(c *fiber.Ctx) error {
 		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "Invalid request"})
 	}
 
+	// Email Format Validation
+	if !strings.Contains(req.Email, "@") || !strings.Contains(req.Email, ".") {
+		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "Invalid email format"})
+	}
+
 	if h.DescopeClient == nil {
 		return c.Status(fiber.StatusServiceUnavailable).JSON(fiber.Map{"error": "Identity provider unavailable"})
 	}
@@ -366,7 +371,7 @@ func (h *AuthHandler) Signup(c *fiber.Ctx) error {
 		slog.Error("[Signup] Failed to set password", "error", err)
 		// Rollback? Delete user?
 		h.DescopeClient.Management.User().Delete(context.Background(), req.Email)
-		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": "Failed to set password"})
+		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": fmt.Sprintf("Failed to set password: %v", err)})
 	}
 
 	// 4. Cleanup Redis

backend/internal/service/redis_service.go

@@ -30,6 +30,10 @@ func NewRedisService() (*RedisService, error) {
 		return nil, err
 	}
 
+	// [DEV-FIX] Disable stop-writes-on-bgsave-error to allow writes even if persistence fails
+	// This is common in dev docker environments with permission issues.
+	rdb.ConfigSet(ctx, "stop-writes-on-bgsave-error", "no")
+
 	return &RedisService{Client: rdb}, nil
 }