[Init] Initial commit - NetMesh terminal manager

electron/mainWindowReuse.cjs

@@ -0,0 +1,44 @@
+function getReusableMainWindow({ getWindowManager, logWarn = console.warn } = {}) {
+  if (typeof getWindowManager !== "function") return null;
+
+  let windowManager = null;
+  let win = null;
+  try {
+    windowManager = getWindowManager();
+    win = windowManager?.getMainWindow?.() || null;
+  } catch {
+    return null;
+  }
+
+  if (!win || win.isDestroyed?.()) return null;
+
+  if (typeof windowManager?.isWindowUsable === "function") {
+    let usable = false;
+    try {
+      usable = windowManager.isWindowUsable(win);
+    } catch {
+      return null;
+    }
+    if (usable) return win;
+  }
+
+  try {
+    if (win.webContents?.isCrashed?.()) {
+      logWarn?.("[Main] Main window webContents has crashed, destroying window");
+      try {
+        win.destroy?.();
+      } catch {
+        // ignore
+      }
+      return null;
+    }
+  } catch {
+    // If the crash check itself fails, keep the existing window path best-effort.
+  }
+
+  if (typeof windowManager?.isWindowUsable === "function") return null;
+
+  return win;
+}
+
+module.exports = { getReusableMainWindow };