fix: create S3 event classes and add formatBytes helper

- Create S3DownloadFinished event to cleanup MinIO containers
- Create S3RestoreJobFinished event to cleanup temp files and S3 downloads
- Add formatBytes() helper function for human-readable file sizes
- Update Import component to use full Event class names in callEventOnFinish
- Fix activity monitor visibility issues with proper event dispatching

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/Events/S3DownloadFinished.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Events;
+
+use App\Models\Server;
+use Illuminate\Broadcasting\InteractsWithSockets;
+use Illuminate\Foundation\Events\Dispatchable;
+use Illuminate\Queue\SerializesModels;
+
+class S3DownloadFinished
+{
+    use Dispatchable, InteractsWithSockets, SerializesModels;
+
+    public function __construct($data)
+    {
+        $containerName = data_get($data, 'containerName');
+        $serverId = data_get($data, 'serverId');
+
+        if (filled($containerName) && filled($serverId)) {
+            // Clean up the MinIO client container
+            $commands = [];
+            $commands[] = "docker stop {$containerName} 2>/dev/null || true";
+            $commands[] = "docker rm {$containerName} 2>/dev/null || true";
+            instant_remote_process($commands, Server::find($serverId), throwError: false);
+        }
+    }
+}

app/Events/S3RestoreJobFinished.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace App\Events;
+
+use App\Models\Server;
+use Illuminate\Broadcasting\InteractsWithSockets;
+use Illuminate\Foundation\Events\Dispatchable;
+use Illuminate\Queue\SerializesModels;
+
+class S3RestoreJobFinished
+{
+    use Dispatchable, InteractsWithSockets, SerializesModels;
+
+    public function __construct($data)
+    {
+        $scriptPath = data_get($data, 'scriptPath');
+        $tmpPath = data_get($data, 'tmpPath');
+        $container = data_get($data, 'container');
+        $serverId = data_get($data, 'serverId');
+        $s3DownloadedFile = data_get($data, 's3DownloadedFile');
+
+        // Clean up temporary files from container
+        if (filled($scriptPath) && filled($tmpPath) && filled($container) && filled($serverId)) {
+            if (str($tmpPath)->startsWith('/tmp/')
+                && str($scriptPath)->startsWith('/tmp/')
+                && ! str($tmpPath)->contains('..')
+                && ! str($scriptPath)->contains('..')
+                && strlen($tmpPath) > 5  // longer than just "/tmp/"
+                && strlen($scriptPath) > 5
+            ) {
+                $commands[] = "docker exec {$container} sh -c 'rm {$scriptPath}'";
+                $commands[] = "docker exec {$container} sh -c 'rm {$tmpPath}'";
+                instant_remote_process($commands, Server::find($serverId), throwError: true);
+            }
+        }
+
+        // Clean up S3 downloaded file from server
+        if (filled($s3DownloadedFile) && filled($serverId)) {
+            if (str($s3DownloadedFile)->startsWith('/tmp/s3-restore-')
+                && ! str($s3DownloadedFile)->contains('..')
+                && strlen($s3DownloadedFile) > 16  // longer than just "/tmp/s3-restore-"
+            ) {
+                $commands = [];
+                $commands[] = "rm -f {$s3DownloadedFile}";
+                instant_remote_process($commands, Server::find($serverId), throwError: false);
+            }
+        }
+    }
+}