Enhance Windows startup window management

- Introduced a delay for maximizing the window on startup to improve user experience on Windows.
- Refactored window state application logic to ensure proper handling of window maximization and layout synchronization.
- Updated platform checks to use a dedicated constant for Windows, improving code clarity and maintainability.

src/desktop/window.js

@@ -7,6 +7,8 @@ import {
 import { sendToRenderer, setMessageSender } from './notify.js'
 
 const isMacOS = process.platform === 'darwin'
+const isWindows = process.platform === 'win32'
+const WINDOWS_STARTUP_MAXIMIZE_DELAY_MS = 1500
 
 const DEV_SERVER_PORT = 5780
 const DEV_SERVER_URL = `http://localhost:${DEV_SERVER_PORT}`
@@ -144,7 +146,7 @@ function broadcastWindowState() {
 function applyStartupWindowState(window) {
   if (!window) return
 
-  if (isMacOS || process.platform === 'win32') {
+  if (isMacOS) {
     window.maximize?.()
   }
 
@@ -168,10 +170,13 @@ function syncWindowsWebviewLayout(window) {
 function applyWindowsStartupWindowState(window) {
   if (!window) return
 
+  setTimeout(() => {
+    window.maximize?.()
     syncWindowsWebviewLayout(window)
     setTimeout(() => syncWindowsWebviewLayout(window), 0)
     setTimeout(() => syncWindowsWebviewLayout(window), 100)
     setTimeout(broadcastWindowState, 100)
+  }, WINDOWS_STARTUP_MAXIMIZE_DELAY_MS)
 }
 
 function setupWindowEvents(window) {
@@ -264,7 +269,7 @@ export async function createMainWindow(rpc) {
     mainWindow.webview.on('dom-ready', () => {
       webviewDomReady = true
 
-      if (process.platform === 'win32') {
+      if (isWindows) {
         applyWindowsStartupWindowState(mainWindow)
       }