Added support for Streamdeck Pedal and updated UI to better fit the Packed UI style

pirp/public/expense_file.php

@@ -0,0 +1,29 @@
+<?php
+require_once __DIR__ . '/../src/config.php';
+require_once __DIR__ . '/../src/auth.php';
+require_once __DIR__ . '/../src/expense_functions.php';
+require_login();
+
+$id = (int)($_GET['id'] ?? 0);
+$expense = get_expense($id);
+
+if (!$expense || empty($expense['attachment_path'])) {
+    http_response_code(404);
+    echo 'Datei nicht gefunden.';
+    exit;
+}
+
+$fsPath = __DIR__ . '/' . $expense['attachment_path'];
+
+if (!is_readable($fsPath)) {
+    http_response_code(404);
+    echo 'Datei nicht gefunden.';
+    exit;
+}
+
+header('Content-Type: application/pdf');
+header('Content-Disposition: inline; filename="Ausgabe-' . $id . '.pdf"');
+header('Content-Length: ' . filesize($fsPath));
+readfile($fsPath);
+exit;
+