feat(DeploymentException): add custom exception for deployment errors and update handler to exclude from reporting

app/Exceptions/DeploymentException.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Exceptions;
+
+use Exception;
+
+/**
+ * Exception for expected deployment failures caused by user/application errors.
+ * These are not Coolify bugs and should not be logged to laravel.log.
+ * Examples: Nixpacks detection failures, missing Dockerfiles, invalid configs, etc.
+ */
+class DeploymentException extends Exception
+{
+    /**
+     * Create a new deployment exception instance.
+     *
+     * @param  string  $message
+     * @param  int  $code
+     */
+    public function __construct($message = '', $code = 0, ?\Throwable $previous = null)
+    {
+        parent::__construct($message, $code, $previous);
+    }
+
+    /**
+     * Create from another exception, preserving its message and stack trace.
+     */
+    public static function fromException(\Throwable $exception): static
+    {
+        return new static($exception->getMessage(), $exception->getCode(), $exception);
+    }
+}