feat: update dependencies and improve dashboard functionality

- Added new dependencies for Next.js and lucide-react in pnpm-workspace.yaml.
- Refactored DashboardPage component to improve readability and error handling.
- Enhanced Header component to display error status with an alert icon.
- Updated MobileTabBar and Sidebar components to use a centralized tabs definition.
- Improved ChannelsView in dashboard-panel to handle channel fetching more cleanly.
- Fixed ActiveSpeaker type to use camelCase for userId.
- Updated MessagesPanel to handle guildId checks more gracefully.
- Adjusted API calls in dashboard and messages to align with backend expectations.
- Refined type definitions across various interfaces for consistency and clarity.

services/discord-gateway/src/modules/gateway-metrics/metrics.ts

@@ -1,6 +1,5 @@
 import http from "node:http";
 import { createChildLogger } from "@bete/shared/logger";
-import type { AppConfig as GatewayConfig } from "../../shared/config/config.js";
 import { config } from "../../shared/config/config.js";
 
 const logger = createChildLogger("gateway-metrics");
@@ -82,7 +81,7 @@ function formatMetrics(): string {
     lines.push(`${fullName} ${metric.value}`);
   }
 
-  return lines.join("\n") + "\n";
+  return `${lines.join("\n")}\n`;
 }
 
 export function startMetricsServer(): void {