feat: full studio build -- light theme, canvas thumbnails, i18n (fa/en)

src/lib/studio-snapshot.ts

@@ -0,0 +1,13 @@
+import { getStudioStage } from "@/lib/studio-canvas-stage";
+
+export function downloadCanvasSnapshot(): boolean {
+  const stage = getStudioStage();
+  if (!stage) return false;
+
+  const dataUrl = stage.toDataURL({ pixelRatio: 2 });
+  const link = document.createElement("a");
+  link.download = `snapshot-${Date.now()}.png`;
+  link.href = dataUrl;
+  link.click();
+  return true;
+}