style: apply backend go fmt and frontend biome auto-fixes

backend/internal/handler/auth_handler.go

@@ -216,7 +216,7 @@ func (h *AuthHandler) CheckLoginID(c *fiber.Ctx) error {
 	if err != nil {
 		return errorJSON(c, fiber.StatusServiceUnavailable, "Identity provider unavailable")
 	}
-	
+
 	if exists {
 		return c.JSON(fiber.Map{"available": false, "message": "ID already registered"})
 	}
@@ -4058,7 +4058,8 @@ func (h *AuthHandler) resolveCurrentProfile(c *fiber.Ctx) (*domain.UserProfileRe
 					// Fallback to Hydra introspection. This is expected for API calls using Bearer tokens.
 					slog.Debug("Kratos cookie session absent, falling back to Hydra token", "error", err.Error())
 					profile, err = h.getHydraProfile(c.Context(), token)
-				}			} else if cookie != "" {
+				}
+			} else if cookie != "" {
 				profile, err = h.getKratosProfileWithCookie(cookie)
 			}
 		}