fix(html): preserve responsive block paths

Co-Authored-By: Virgil <virgil@lethean.io>

path_test.go

@@ -121,6 +121,19 @@ func TestNestedLayout_ThroughElementWrapper(t *testing.T) {
 	}
 }
 
+func TestNestedLayout_ThroughResponsiveWrapper(t *testing.T) {
+	ctx := NewContext()
+
+	inner := NewLayout("C").C(Raw("wrapped"))
+	wrapped := NewResponsive().
+		Variant("desktop", inner)
+	got := NewLayout("C").C(wrapped).Render(ctx)
+
+	if !strings.Contains(got, `data-block="C-0-C-0"`) {
+		t.Fatalf("responsive wrapper should preserve nested block path, got:\n%s", got)
+	}
+}
+
 func TestNestedLayout_NilChild(t *testing.T) {
 	ctx := NewContext()
 

responsive.go

@@ -103,6 +103,10 @@ func (r *Responsive) Variant(name string, layout *Layout) *Responsive {
 // responsive.go: Render produces HTML with each variant in a data-variant container.
 // Example: NewResponsive().Variant("desktop", NewLayout("C")).Render(NewContext()).
 func (r *Responsive) Render(ctx *Context) string {
+	return r.renderWithPath(ctx, "")
+}
+
+func (r *Responsive) renderWithPath(ctx *Context, path string) string {
 	if r == nil {
 		return ""
 	}
@@ -125,7 +129,7 @@ func (r *Responsive) Render(ctx *Context) string {
 		b.WriteString(` data-variant="`)
 		b.WriteString(escapeAttr(v.name))
 		b.WriteString(`">`)
-		b.WriteString(Render(v.layout, ctx))
+		b.WriteString(renderNodeWithPath(v.layout, ctx, path))
 		b.WriteString(`</div>`)
 	}
 	return b.String()