feat: enhance push notification management and error handling

- Implemented error handling for unhandled promise rejections related to message channels, improving stability during push notification operations.
- Updated the PushNotificationManager component to manage push subscription registration with timeouts, preventing application hangs.
- Enhanced the sidebar and chat components to display user avatars, improving user experience and visual consistency.
- Refactored email processing logic to support scheduled email sending, integrating new backend functionalities for better email management.
- Improved overall error handling and logging across components to reduce console spam and enhance debugging capabilities.

packages/backend/convex/actions/email.ts

@@ -14,9 +14,10 @@ export const enviar = action({
     "use node";
     const nodemailer = await import("nodemailer");
 
+    let email;
     try {
       // Buscar email da fila
-      const email = await ctx.runQuery(internal.email.getEmailById, {
+      email = await ctx.runQuery(internal.email.getEmailById, {
         emailId: args.emailId,
       });