Fix first local markdown open reload

rust/crates/mnote-web/browser/document-editor-adapter-runtime.js

@@ -257,6 +257,12 @@ import {
       shell.setAttribute('data-layout-density', String(options.layoutDensity || 'normal'));
       shell.setAttribute('data-page-font', String(options.pageFont || 'default'));
       shell.setAttribute('data-page-show-heading-numbers', String(Boolean(options.showHeadingNumbers)));
+      const hideTitleHeader = Boolean(options.hideTitleHeader || options.hide_title_header);
+      const header = shell.querySelector('.document-shell-header');
+      if (header instanceof HTMLElement) {
+        header.hidden = hideTitleHeader;
+        header.setAttribute('data-page-title-hidden', String(hideTitleHeader));
+      }
     }
     pane.querySelectorAll('[data-page-title-input="true"]').forEach((node) => {
       if (!(node instanceof HTMLTextAreaElement)) return;
@@ -756,6 +762,22 @@ import {
   bindMainEditorPageTab('primary');
   bindMainEditorPageTab('secondary');
 
+  const shouldPrewarmPrimaryRuntime = paneRuntimes.length === 0
+    && document.querySelector('.mnote-workspace-empty-editor-host')
+    && document.querySelector(`${ROOT_SELECTOR}[data-pane-role="primary"]`);
+  if (shouldPrewarmPrimaryRuntime) {
+    const prewarmRuntime = () => {
+      loadRuntime().catch((error) => {
+        console.warn('mnote editor runtime prewarm failed', error);
+      });
+    };
+    if (typeof window.requestIdleCallback === 'function') {
+      window.requestIdleCallback(prewarmRuntime, { timeout: 2000 });
+    } else {
+      window.setTimeout(prewarmRuntime, 800);
+    }
+  }
+
   window.addEventListener('pagehide', () => {
     Array.from(documentSessionRegistry.values()).forEach((session) => {
       sessionViews(session).forEach((view) => {