feat: 发布 v0.4.0 桌面端

apps/web/src/App.tsx

@@ -37,9 +37,11 @@ import {
   downloadPdf,
   getCachedPdfExport,
   getOrRequestPdfExport,
+  requestDesktopPdfExport,
   type CachedPdfExport,
   type PdfExportRequest
 } from "./pdf-export";
+import { APP_VERSION_LABEL } from "./app-version";
 import { getSyncedScrollTop } from "./scroll-sync";
 import {
   loadPreviewZoom,
@@ -832,7 +834,10 @@ export function App() {
     try {
       const resolved = await getOrRequestPdfExport(
         pdfRequest,
-        pdfCache
+        pdfCache,
+        previewPayload && window.mdToPdfDesktop
+          ? () => requestDesktopPdfExport(previewPayload)
+          : undefined
       );
       if (pdfRequestKeyRef.current !== requestedKey) {
         setStatus("文档已更新，已丢弃过期 PDF");
@@ -841,7 +846,11 @@ export function App() {
       setPdfCache(resolved);
       const exported = resolved.result;
       if (download) {
-        downloadPdf(exported.blob, exported.fileName);
+        const saved = await downloadPdf(exported.blob, exported.fileName);
+        if (!saved) {
+          setStatus("已取消 PDF 保存");
+          return;
+        }
       }
       const pageDescription =
         exported.pageCount === undefined
@@ -893,7 +902,10 @@ export function App() {
         <div className="topbar-primary">
           <div className="topbar-brand">
             <p className="eyebrow">内网文档工具</p>
-            <h1>Markdown PDF 导出器</h1>
+            <div className="topbar-brand-title">
+              <h1>Markdown PDF 导出器</h1>
+              <span className="app-version">{APP_VERSION_LABEL}</span>
+            </div>
           </div>
           <div className="document-summary">
             <span className="panel-kicker">源文件</span>