fix(stats): refresh word/char/reading-time on every render

desktop-app/resources/js/script.js

@@ -11139,7 +11139,6 @@ ${selector} .arrowheadPath {
     renderMathJaxNodes(roots, rawVal, context, { snapshotReviewTargets: true });
 
     decorateReviewTargets();
-    updateDocumentStats();
     updateFindHighlights();
     scheduleLineNumberUpdate();
     scheduleAdvancedPostProcessRecovery(rawVal, context);
@@ -11188,6 +11187,10 @@ ${selector} .arrowheadPath {
     options = options || {};
     const rawVal = markdownEditor.value;
     const force = options.force === true;
+    // Stats must reflect the current editor content on every render call, even when
+    // the preview HTML itself is skipped below because it's already up to date
+    // (e.g. switching back to a tab whose content didn't change).
+    updateDocumentStats();
     const previewDocumentId = getActivePreviewDocumentId();
     const hasCurrentPreview =
       previewHasCommittedRender &&

script.js

@@ -11139,7 +11139,6 @@ ${selector} .arrowheadPath {
     renderMathJaxNodes(roots, rawVal, context, { snapshotReviewTargets: true });
 
     decorateReviewTargets();
-    updateDocumentStats();
     updateFindHighlights();
     scheduleLineNumberUpdate();
     scheduleAdvancedPostProcessRecovery(rawVal, context);
@@ -11188,6 +11187,10 @@ ${selector} .arrowheadPath {
     options = options || {};
     const rawVal = markdownEditor.value;
     const force = options.force === true;
+    // Stats must reflect the current editor content on every render call, even when
+    // the preview HTML itself is skipped below because it's already up to date
+    // (e.g. switching back to a tab whose content didn't change).
+    updateDocumentStats();
     const previewDocumentId = getActivePreviewDocumentId();
     const hasCurrentPreview =
       previewHasCommittedRender &&

tests/e2e/tab-split-sidebar-update.spec.js

@@ -257,6 +257,24 @@ test('closing a tab keeps the document in Files and reopening restores the tab',
   await expect(reopenedRow).toHaveCount(0);
 });
 
+test('reopening the only closed tab restores the word/char/reading-time stats', async ({ page }) => {
+  const closedTabId = await page.locator('#tab-list .tab-item.active').getAttribute('data-tab-id');
+  await setEditorContent(page, '# Kept document\n\nSome words to count here.');
+
+  await expect(page.locator('#word-count')).toHaveText('8');
+  await expect(page.locator('#char-count')).toHaveText('42');
+
+  await page.locator('#tab-list .tab-item.active .tab-close-btn').click();
+  await expect(page.locator('#word-count')).toHaveText('0');
+  await expect(page.locator('#char-count')).toHaveText('0');
+
+  await page.locator(`.document-tree-row[data-document-id="${closedTabId}"] .document-tree-main`).click();
+  await expect(page.locator('#markdown-editor')).toHaveValue('# Kept document\n\nSome words to count here.');
+  await expect(page.locator('#word-count')).toHaveText('8');
+  await expect(page.locator('#char-count')).toHaveText('42');
+  await expect(page.locator('#reading-time')).toHaveText('1');
+});
+
 test('format toolbar consolidates heading, case, alignment, and insert actions', async ({ page }) => {
   await expect(page.locator('[data-md-action="clear-formatting"]')).toHaveCount(0);
   await expect(page.locator('[data-md-action="help"]')).toHaveCount(0);