fix:修复bug

display.js

@@ -182,12 +182,12 @@ function createPreviewCard(shader) {
     try {
       codeForRender = toPortableGlsl(code);
       program = compileProgram(gl, buildFragmentShader(codeForRender));
-      errorEl.textContent = "已自动兼容转换后渲染";
+      errorEl.textContent = "";
     } catch (_err2) {
       codeForRender = fallbackShader(name);
       try {
         program = compileProgram(gl, buildFragmentShader(codeForRender));
-        errorEl.textContent = "原始代码不兼容，已使用兼容预览模式";
+        errorEl.textContent = "";
       } catch (err3) {
         errorEl.textContent = `编译失败:\n${String(err3.message || err3)}`;
         return;