fix(window): 主窗口标题使用应用名，修复 Windows 任务栏无名称

build/splash.html

@@ -3,7 +3,7 @@
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width,initial-scale=1" />
-    <title></title>
+    <title>DSH Desktop</title>
     <style>
       :root { color-scheme: light; }
       * { box-sizing: border-box; }

src/main/index.ts

@@ -1125,7 +1125,7 @@ function createWindow(): BrowserWindow {
     minWidth: 900,
     minHeight: 640,
     show: false,
-    title: '',
+    title: app.getName(),
     icon: desktopIconPath(),
     ...(process.platform === 'darwin' ? {
       titleBarStyle: 'hiddenInset' as const,
@@ -1183,7 +1183,7 @@ function createWindow(): BrowserWindow {
   })
   window.on('page-title-updated', (event) => {
     event.preventDefault()
-    window.setTitle('')
+    window.setTitle(app.getName())
   })
   window.webContents.on('console-message', (details) => {
     if (details.level !== 'error') return

test/main-window-title.test.ts

@@ -0,0 +1,42 @@
+import { readFile } from 'node:fs/promises'
+import { describe, expect, it } from 'vitest'
+
+async function windowSource(): Promise<string> {
+  const main = await readFile('src/main/index.ts', 'utf8')
+  const start = main.indexOf('function createWindow(): BrowserWindow {')
+  expect(start).toBeGreaterThanOrEqual(0)
+  return main.slice(start, main.indexOf('\nasync function openHarness(', start))
+}
+
+// createWindow lives in the application entry point, which starts Electron on import.
+describe('main window title', () => {
+  it('uses the configured app name before any page loads', async () => {
+    const source = await windowSource()
+
+    expect(source).toContain('title: app.getName()')
+    expect(source).not.toMatch(/title:\s*(['"])\1/)
+  })
+
+  it('keeps the app name when renderer pages update their title', async () => {
+    const source = await windowSource()
+
+    expect(source).toMatch(
+      /window\.on\('page-title-updated', \(event\) => \{\s*event\.preventDefault\(\)\s*window\.setTitle\(app\.getName\(\)\)\s*\}\)/
+    )
+    expect(source).not.toMatch(/\.setTitle\((['"])\1\)/)
+  })
+
+  it('retains hidden native captions on macOS and Windows', async () => {
+    const source = await windowSource()
+
+    expect(source).toMatch(/process\.platform === 'darwin' \? \{\s*titleBarStyle: 'hiddenInset'/)
+    expect(source).toMatch(/isWindows\s*\? \{\s*titleBarStyle: 'hidden'/)
+    expect(source).toContain('titleBarOverlay: windowsTitleBarOverlay(')
+  })
+
+  it('does not give the startup page an empty document title', async () => {
+    const splash = await readFile('build/splash.html', 'utf8')
+
+    expect(splash).toContain('<title>DSH Desktop</title>')
+  })
+})