Add human-style explanatory comments in main runtime flow

src/main/main.ts

@@ -31,6 +31,7 @@ let loadingWindow: BrowserWindow | null = null;
 let shutdownState: AppShutdownState = "running";
 
 async function launchApplication(): Promise<void> {
+  // We create both windows early so startup feels instant while NodeCG is booting in the background.
   mainWindow = createMainWindow({ appConfig, rootPath, mainDashboardUrl });
   loadingWindow = createLoadingWindow({ appConfig, rootPath });
 
@@ -53,6 +54,7 @@ async function launchApplication(): Promise<void> {
 
   await mainWindow.loadURL(mainDashboardUrl);
 
+  // Keep the loading overlay visible for a minimum amount of time to avoid abrupt flashes.
   const remainingLoadingDelay = getRemainingDelayMs(appConfig.loadDelayMs, loadingShownAt);
   if (remainingLoadingDelay > 0) {
     await sleep(remainingLoadingDelay);
@@ -126,6 +128,7 @@ app.on("before-quit", (event) => {
     return;
   }
 
+  // Block the default quit flow until we ask NodeCG to stop cleanly.
   event.preventDefault();
 
   stopNodecgGracefully().finally(() => {