create identification parts functions

public/userarea/delete_part.php

@@ -0,0 +1,29 @@
+<?php
+header('Content-Type: application/json');
+
+include('include/headscript.php');
+
+$dbHandler = DBHandlerSelect::getInstance();
+$pdo = $dbHandler->getConnection();
+
+$data = json_decode(file_get_contents('php://input'), true);
+
+$partId = $data['part_id'] ?? null;
+
+if (!$partId) {
+    echo json_encode(['success' => false, 'message' => 'ID parte mancante']);
+    exit;
+}
+
+try {
+    $stmt = $pdo->prepare("DELETE FROM identification_parts WHERE id = :part_id");
+    $stmt->execute([':part_id' => $partId]);
+    $rowCount = $stmt->rowCount();
+    if ($rowCount > 0) {
+        echo json_encode(['success' => true, 'message' => 'Parte eliminata con successo']);
+    } else {
+        echo json_encode(['success' => false, 'message' => 'Nessuna parte trovata con ID ' . $partId]);
+    }
+} catch (PDOException $e) {
+    echo json_encode(['success' => false, 'message' => 'Errore nell\'eliminazione: ' . $e->getMessage()]);
+}