feat: apply disable animations before the first paint

backend/frontend/frontend_excluded.go

@@ -3,9 +3,11 @@
 package frontend
 
 import (
+	"context"
+
 	"github.com/gin-gonic/gin"
 )
 
-func RegisterFrontend(router *gin.Engine) error {
+func RegisterFrontend(router *gin.Engine, animationsDisabled func(ctx context.Context) bool) error {
 	return ErrFrontendNotIncluded
 }