test(startup): isolate post-load IPC control (#37)

- Issue #37: test whether a single command is safe after the document load callback returns.
- Keep the native shell unchanged while replacing the renderer with one post-load IPC call.

Refs #37.

src/main.tsx

@@ -1,15 +1,20 @@
-import { invoke } from "@tauri-apps/api/core";
+import { invoke } from '@tauri-apps/api/core';
 
-const rootElement = document.getElementById("root");
-if (rootElement) rootElement.textContent = "Firelink startup control";
+const rootElement = document.getElementById('root');
+if (rootElement) {
+  rootElement.textContent = 'Firelink startup control';
+}
 
-const documentLoaded = new Promise<void>((resolve) => {
+const documentLoaded = new Promise<void>(resolve => {
   const releaseAfterNativeLoad = () => window.setTimeout(resolve, 0);
-  if (document.readyState === "complete") releaseAfterNativeLoad();
-  else window.addEventListener("load", releaseAfterNativeLoad, { once: true });
+  if (document.readyState === 'complete') {
+    releaseAfterNativeLoad();
+  } else {
+    window.addEventListener('load', releaseAfterNativeLoad, { once: true });
+  }
 });
 
 void documentLoaded.then(async () => {
-  await invoke<boolean>("is_log_paused");
-  if (rootElement) rootElement.textContent = "Firelink post-load log read";
+  await invoke<number>('begin_dock_badge_session');
+  if (rootElement) rootElement.textContent = 'Firelink post-load IPC control';
 });