feat(proxy): add Traefik version tracking with notifications and dismissible UI warnings

- Add automated Traefik version checking job running weekly on Sundays
- Implement version detection from running containers and comparison with versions.json
- Add notifications across all channels (Email, Discord, Slack, Telegram, Pushover, Webhook) for outdated versions
- Create dismissible callout component with localStorage persistence
- Display cross-branch upgrade warnings (e.g., v3.5 -> v3.6) with changelog links
- Show patch update notifications within same branch
- Add warning icon that appears when callouts are dismissed
- Prevent duplicate notifications during proxy restart by adding restarting parameter
- Fix notification spam with transition-based logic for status changes
- Enable system email settings by default in development mode
- Track last saved/applied proxy settings to detect configuration drift

app/Console/Commands/CheckTraefikVersionCommand.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Console\Commands;
+
+use App\Jobs\CheckTraefikVersionJob;
+use Illuminate\Console\Command;
+
+class CheckTraefikVersionCommand extends Command
+{
+    protected $signature = 'traefik:check-version';
+
+    protected $description = 'Check Traefik proxy versions on all servers and send notifications for outdated versions';
+
+    public function handle(): int
+    {
+        $this->info('Checking Traefik versions on all servers...');
+
+        try {
+            CheckTraefikVersionJob::dispatch();
+            $this->info('Traefik version check job dispatched successfully.');
+            $this->info('Notifications will be sent to teams with outdated Traefik versions.');
+
+            return Command::SUCCESS;
+        } catch (\Exception $e) {
+            $this->error('Failed to dispatch Traefik version check job: '.$e->getMessage());
+
+            return Command::FAILURE;
+        }
+    }
+}