Merge branch 'feature/inventory-maintaince'

public/userarea/delete_tool.php

@@ -6,40 +6,37 @@ header('Content-Type: application/json');
 
 require_once 'include/headscript.php';
 
+/**
+ * Soft-deletes a tool: it is marked as decommissioned, not removed, because
+ * production records reference it (productiondata_tools.tool_id).
+ *
+ * production_tools is now the unified registry inv_equipment.
+ *
+ * Note: the page calls this endpoint with GET ?id=..., while the previous
+ * version only read $_POST['id'] and required a name — so deletion always
+ * failed with "Invalid ID.". Both methods are accepted now.
+ */
 try {
     $db  = DBHandlerSelect::getInstance();
     $pdo = $db->getConnection();
 
-    $id         = (int)($_POST['id'] ?? 0);
-    $name       = trim($_POST['name'] ?? '');
-    $tool_type  = trim($_POST['tool_type'] ?? '');
-    $description = trim($_POST['description'] ?? '');
-    $is_active  = isset($_POST['is_active']) ? (int)$_POST['is_active'] : 1;
+    $id = (int)($_POST['id'] ?? $_GET['id'] ?? 0);
 
     if ($id <= 0) {
         echo json_encode(['success' => false, 'message' => 'Invalid ID.']);
         exit;
     }
 
-    if ($name === '') {
-        echo json_encode(['success' => false, 'message' => 'Name is required.']);
+    $stmt = $pdo->prepare("SELECT id FROM inv_equipment WHERE id = ?");
+    $stmt->execute([$id]);
+
+    if (!$stmt->fetchColumn()) {
+        echo json_encode(['success' => false, 'message' => 'Strumento non trovato.']);
         exit;
     }
 
-    $sql = "UPDATE production_tools
-            SET name = :name,
-                tool_type = :tool_type,
-                description = :description,
-                is_active = :is_active
-            WHERE id = :id";
-    $stmt = $pdo->prepare($sql);
-    $stmt->execute([
-        'name'        => $name,
-        'tool_type'   => $tool_type ?: null,
-        'description' => $description ?: null,
-        'is_active'   => $is_active,
-        'id'          => $id
-    ]);
+    $stmt = $pdo->prepare("UPDATE inv_equipment SET status = 'decommissioned' WHERE id = ?");
+    $stmt->execute([$id]);
 
     echo json_encode(['success' => true]);
 } catch (Exception $e) {

public/userarea/edit_tool.php

@@ -17,7 +17,7 @@ try {
     $toolType           = trim($_POST['tool_type'] ?? '');
     $manufacturer       = trim($_POST['manufacturer'] ?? '');
     $description        = trim($_POST['description'] ?? '');
-    $isActive           = isset($_POST['is_active']) ? (int)$_POST['is_active'] : 1;
+    $status             = (string)($_POST['status'] ?? 'active');
 
     if ($id <= 0) {
         echo json_encode(['success' => false, 'message' => 'Invalid ID.']);
@@ -29,14 +29,19 @@ try {
         exit;
     }
 
-    $sql = "UPDATE production_tools
+    if (!in_array($status, ['active', 'out_of_service', 'decommissioned'], true)) {
+        $status = 'active';
+    }
+
+    // production_tools is now inv_equipment (see manutenzioni/sql)
+    $sql = "UPDATE inv_equipment
             SET name = :name,
                 registration_number = :registration_number,
                 serial_number = :serial_number,
                 tool_type = :tool_type,
                 manufacturer = :manufacturer,
                 description = :description,
-                is_active = :is_active
+                status = :status
             WHERE id = :id";
 
     $stmt = $pdo->prepare($sql);
@@ -47,7 +52,7 @@ try {
         'tool_type'          => $toolType ?: null,
         'manufacturer'       => $manufacturer ?: null,
         'description'        => $description ?: null,
-        'is_active'          => $isActive,
+        'status'             => $status,
         'id'                 => $id
     ]);
 

public/userarea/include/navbar.php

@@ -346,6 +346,66 @@
             </li>
         <?php endif; ?>
 
+
+        <?php
+        $canSeeMaintenance =
+            userCan('maintenance.equipment.view')
+            || userCan('maintenance.maintenances.view')
+            || userCan('maintenance.calendar.view')
+            || userCan('maintenance.categories.view');
+        ?>
+
+        <?php if ($canSeeMaintenance) : ?>
+            <li>
+                <a href="javascript:;" class="has-arrow">
+                    <div class="parent-icon">
+                        <i class="bx bx-wrench"></i>
+                    </div>
+                    <div class="menu-title">Manutenzioni</div>
+                </a>
+
+                <ul>
+                    <?php if (userCan('maintenance.equipment.view')) : ?>
+                        <li>
+                            <a href="manutenzioni/index.php">
+                                <i class='bx bx-radio-circle'></i>Registro Attrezzature
+                            </a>
+                        </li>
+                    <?php endif; ?>
+
+                    <?php if (userCan('maintenance.maintenances.view')) : ?>
+                        <li>
+                            <a href="manutenzioni/maintenances.php">
+                                <i class='bx bx-radio-circle'></i>Manutenzioni
+                            </a>
+                        </li>
+                    <?php endif; ?>
+
+                    <?php if (userCan('maintenance.calendar.view')) : ?>
+                        <li>
+                            <a href="manutenzioni/calendar.php">
+                                <i class='bx bx-radio-circle'></i>Calendario
+                            </a>
+                        </li>
+                    <?php endif; ?>
+
+                    <li>
+                        <a href="manutenzioni/calendar_global.php">
+                            <i class='bx bx-radio-circle'></i>Calendario Cumulativo
+                        </a>
+                    </li>
+
+                    <?php if (userCan('maintenance.categories.view')) : ?>
+                        <li>
+                            <a href="manutenzioni/categories/index.php">
+                                <i class='bx bx-radio-circle'></i>Categorie
+                            </a>
+                        </li>
+                    <?php endif; ?>
+                </ul>
+            </li>
+        <?php endif; ?>
+
         <li>
             <a href="javascript:;" class="has-arrow">
                 <div class="parent-icon">

public/userarea/manutenzioni/INSTALLATION.md

@@ -0,0 +1,17 @@
+```bash
+# 1. database — nell'ordine, tutti idempotenti
+cd public/userarea/manutenzioni/sql
+for f in 1_rename_production_tools 2_create_tables 3_seed_and_link 4_permissions; do
+    mysql -u <user> -p <database> < $f.sql
+done
+
+# 2. dati reali del cliente dagli XLS (facoltativo)
+mysql -u <user> -p <database> < 5_import_from_xls.sql
+
+# 3. cartella allegati scrivibile
+chmod 755 ../attachments && chown www-data:www-data ../attachments
+
+# 4. cron giornaliero delle notifiche
+echo '0 7 * * * php /var/www/html/public/userarea/manutenzioni/cron/send_notifications.php' | crontab -
+```
+

public/userarea/manutenzioni/ajax/auth_check.php

@@ -0,0 +1,82 @@
+<?php
+
+/**
+ * Auth + permission guard for the Manutenzioni ajax endpoints.
+ * Include at the top of every handler; it defines $currentUserId.
+ *
+ * Authorisation is enforced here, on the backend — the UI only hides
+ * buttons, it never decides what a request is allowed to do.
+ */
+
+if (session_status() === PHP_SESSION_NONE) {
+    session_start();
+}
+
+header('Content-Type: application/json; charset=utf-8');
+
+if (empty($_SESSION['iduserlogin'])) {
+    http_response_code(401);
+    echo json_encode(['success' => false, 'message' => 'Non autorizzato. Effettua il login.']);
+    exit;
+}
+
+$currentUserId = (int)$_SESSION['iduserlogin'];
+
+require_once __DIR__ . '/../include/functions.php';
+
+if (!function_exists('mnt_user_can')) {
+    /**
+     * Permission check straight from the Vanguard RBAC tables
+     * (the Auth facade is not bootstrapped in these endpoints).
+     */
+    function mnt_user_can(string $permission): bool
+    {
+        global $currentUserId;
+
+        static $permissions = null;
+
+        if ($permissions === null) {
+            $stmt = mnt_pdo()->prepare("
+                SELECT p.name
+                FROM auth_users u
+                INNER JOIN auth_permission_role pr ON pr.role_id = u.role_id
+                INNER JOIN auth_permissions p ON p.id = pr.permission_id
+                WHERE u.id = ?
+            ");
+            $stmt->execute([$currentUserId]);
+            $permissions = $stmt->fetchAll(PDO::FETCH_COLUMN);
+        }
+
+        return in_array($permission, $permissions, true);
+    }
+}
+
+if (!function_exists('mnt_require_permission')) {
+    function mnt_require_permission(string $permission): void
+    {
+        if (!mnt_user_can($permission)) {
+            http_response_code(403);
+            echo json_encode(['success' => false, 'message' => 'Permesso negato.']);
+            exit;
+        }
+    }
+}
+
+if (!function_exists('mnt_json_fail')) {
+    function mnt_json_fail(string $message, int $code = 200): void
+    {
+        if ($code !== 200) {
+            http_response_code($code);
+        }
+        echo json_encode(['success' => false, 'message' => $message]);
+        exit;
+    }
+}
+
+if (!function_exists('mnt_json_ok')) {
+    function mnt_json_ok(array $payload = []): void
+    {
+        echo json_encode(['success' => true] + $payload);
+        exit;
+    }
+}

public/userarea/manutenzioni/ajax/delete_category.php

@@ -0,0 +1,31 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+mnt_require_permission('maintenance.manage');
+
+try {
+    $pdo = mnt_pdo();
+
+    $id = (int)($_POST['id'] ?? 0);
+
+    if ($id <= 0) {
+        mnt_json_fail('ID non valido.');
+    }
+
+    // The FK is ON DELETE SET NULL, so a delete would silently orphan items:
+    // refuse while the category is still in use.
+    $stmt = $pdo->prepare("SELECT COUNT(*) FROM inv_equipment WHERE category_id = ?");
+    $stmt->execute([$id]);
+    $inUse = (int)$stmt->fetchColumn();
+
+    if ($inUse > 0) {
+        mnt_json_fail('Impossibile eliminare: la categoria è usata da ' . $inUse . ' attrezzature.');
+    }
+
+    $pdo->prepare("DELETE FROM inv_categories WHERE id = ?")->execute([$id]);
+
+    mnt_json_ok();
+} catch (Throwable $e) {
+    mnt_json_fail('Errore: ' . $e->getMessage());
+}

public/userarea/manutenzioni/ajax/delete_equipment.php

@@ -0,0 +1,85 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+mnt_require_permission('maintenance.manage');
+
+try {
+    $pdo = mnt_pdo();
+
+    $id = (int)($_POST['id'] ?? 0);
+
+    if ($id <= 0) {
+        mnt_json_fail('ID non valido.');
+    }
+
+    $stmt = $pdo->prepare("SELECT id, name FROM inv_equipment WHERE id = ?");
+    $stmt->execute([$id]);
+    $equipment = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    if (!$equipment) {
+        mnt_json_fail('Attrezzatura non trovata.');
+    }
+
+    // Legacy production records reference tools without ON DELETE CASCADE:
+    // refuse with a clear message instead of letting the FK throw.
+    $stmt = $pdo->prepare("SELECT COUNT(*) FROM productiondata_tools WHERE tool_id = ?");
+    $stmt->execute([$id]);
+    $usedInProduction = (int)$stmt->fetchColumn();
+
+    if ($usedInProduction > 0) {
+        mnt_json_fail(
+            'Impossibile eliminare: l\'attrezzatura è usata in ' . $usedInProduction .
+            ' registrazioni di produzione. Impostala su "Dismesso" per escluderla dalle pianificazioni.'
+        );
+    }
+
+    // Collect stored files before the cascade removes their rows
+    $storedNames = [];
+
+    $stmt = $pdo->prepare("SELECT stored_name FROM inv_equipment_files WHERE equipment_id = ?");
+    $stmt->execute([$id]);
+    $storedNames = array_merge($storedNames, $stmt->fetchAll(PDO::FETCH_COLUMN));
+
+    $stmt = $pdo->prepare("
+        SELECT f.stored_name
+        FROM maint_maintenance_files f
+        INNER JOIN maint_maintenances m ON m.id = f.maintenance_id
+        WHERE m.equipment_id = ?
+    ");
+    $stmt->execute([$id]);
+    $storedNames = array_merge($storedNames, $stmt->fetchAll(PDO::FETCH_COLUMN));
+
+    $stmt = $pdo->prepare("
+        SELECT f.stored_name
+        FROM maint_intervention_files f
+        INNER JOIN maint_interventions i ON i.id = f.intervention_id
+        WHERE i.equipment_id = ?
+    ");
+    $stmt->execute([$id]);
+    $storedNames = array_merge($storedNames, $stmt->fetchAll(PDO::FETCH_COLUMN));
+
+    $stmt = $pdo->prepare("SELECT signature_path FROM maint_interventions WHERE equipment_id = ? AND signature_path IS NOT NULL");
+    $stmt->execute([$id]);
+    $storedNames = array_merge($storedNames, $stmt->fetchAll(PDO::FETCH_COLUMN));
+
+    // cover_file_id points at inv_equipment_files, which cascades from the
+    // equipment row: clear it first so the FK does not block the delete.
+    $pdo->beginTransaction();
+    $pdo->prepare("UPDATE inv_equipment SET cover_file_id = NULL WHERE id = ?")->execute([$id]);
+    $pdo->prepare("DELETE FROM inv_equipment WHERE id = ?")->execute([$id]);
+    $pdo->commit();
+
+    foreach (array_filter($storedNames) as $storedName) {
+        mnt_delete_stored_file($storedName);
+    }
+
+    mnt_log($pdo, 'equipment_deleted', null, null, null, $currentUserId, null, $equipment['name']);
+
+    mnt_json_ok();
+} catch (Throwable $e) {
+    if (isset($pdo) && $pdo->inTransaction()) {
+        $pdo->rollBack();
+    }
+    mnt_json_fail('Errore: ' . $e->getMessage());
+}

public/userarea/manutenzioni/ajax/delete_file.php

@@ -0,0 +1,56 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+mnt_require_permission('maintenance.manage');
+
+try {
+    $pdo = mnt_pdo();
+
+    $scope = (string)($_POST['scope'] ?? 'equipment');
+    $id = (int)($_POST['id'] ?? 0);
+
+    $tables = [
+        'equipment'    => 'inv_equipment_files',
+        'maintenance'  => 'maint_maintenance_files',
+        'intervention' => 'maint_intervention_files',
+    ];
+
+    if (!isset($tables[$scope])) {
+        mnt_json_fail('Scope non valido.');
+    }
+    if ($id <= 0) {
+        mnt_json_fail('ID non valido.');
+    }
+
+    $stmt = $pdo->prepare("SELECT * FROM {$tables[$scope]} WHERE id = ?");
+    $stmt->execute([$id]);
+    $file = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    if (!$file) {
+        mnt_json_fail('File non trovato.');
+    }
+
+    // Clear the cover reference first — the FK would block the delete
+    if ($scope === 'equipment') {
+        $pdo->prepare("UPDATE inv_equipment SET cover_file_id = NULL WHERE cover_file_id = ?")->execute([$id]);
+    }
+
+    $pdo->prepare("DELETE FROM {$tables[$scope]} WHERE id = ?")->execute([$id]);
+    mnt_delete_stored_file((string)$file['stored_name']);
+
+    mnt_log(
+        $pdo,
+        'file_deleted',
+        $scope === 'equipment' ? (int)$file['equipment_id'] : null,
+        $scope === 'maintenance' ? (int)$file['maintenance_id'] : null,
+        $scope === 'intervention' ? (int)$file['intervention_id'] : null,
+        $currentUserId,
+        null,
+        (string)$file['original_name']
+    );
+
+    mnt_json_ok();
+} catch (Throwable $e) {
+    mnt_json_fail('Errore: ' . $e->getMessage());
+}

public/userarea/manutenzioni/ajax/delete_intervention.php

@@ -0,0 +1,55 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+mnt_require_permission('maintenance.manage');
+
+try {
+    $pdo = mnt_pdo();
+
+    $id = (int)($_POST['id'] ?? 0);
+
+    if ($id <= 0) {
+        mnt_json_fail('ID non valido.');
+    }
+
+    $stmt = $pdo->prepare("SELECT * FROM maint_interventions WHERE id = ?");
+    $stmt->execute([$id]);
+    $intervention = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    if (!$intervention) {
+        mnt_json_fail('Intervento non trovato.');
+    }
+
+    $stmt = $pdo->prepare("SELECT stored_name FROM maint_intervention_files WHERE intervention_id = ?");
+    $stmt->execute([$id]);
+    $storedNames = $stmt->fetchAll(PDO::FETCH_COLUMN);
+
+    if (!empty($intervention['signature_path'])) {
+        $storedNames[] = $intervention['signature_path'];
+    }
+
+    $pdo->prepare("DELETE FROM maint_interventions WHERE id = ?")->execute([$id]);
+
+    foreach (array_filter($storedNames) as $storedName) {
+        mnt_delete_stored_file($storedName);
+    }
+
+    // Removing the last completed intervention must roll the due date back
+    mnt_recalc_maintenance($pdo, (int)$intervention['maintenance_id']);
+
+    mnt_log(
+        $pdo,
+        'intervention_deleted',
+        (int)$intervention['equipment_id'],
+        (int)$intervention['maintenance_id'],
+        null,
+        $currentUserId,
+        null,
+        'Intervento del ' . $intervention['performed_at']
+    );
+
+    mnt_json_ok();
+} catch (Throwable $e) {
+    mnt_json_fail('Errore: ' . $e->getMessage());
+}

public/userarea/manutenzioni/ajax/delete_maintenance.php

@@ -0,0 +1,53 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+mnt_require_permission('maintenance.manage');
+
+try {
+    $pdo = mnt_pdo();
+
+    $id = (int)($_POST['id'] ?? 0);
+
+    if ($id <= 0) {
+        mnt_json_fail('ID non valido.');
+    }
+
+    $stmt = $pdo->prepare("SELECT id, equipment_id, title FROM maint_maintenances WHERE id = ?");
+    $stmt->execute([$id]);
+    $maintenance = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    if (!$maintenance) {
+        mnt_json_fail('Manutenzione non trovata.');
+    }
+
+    // Files of the maintenance and of its interventions (both cascade in DB)
+    $stmt = $pdo->prepare("SELECT stored_name FROM maint_maintenance_files WHERE maintenance_id = ?");
+    $stmt->execute([$id]);
+    $storedNames = $stmt->fetchAll(PDO::FETCH_COLUMN);
+
+    $stmt = $pdo->prepare("
+        SELECT f.stored_name
+        FROM maint_intervention_files f
+        INNER JOIN maint_interventions i ON i.id = f.intervention_id
+        WHERE i.maintenance_id = ?
+    ");
+    $stmt->execute([$id]);
+    $storedNames = array_merge($storedNames, $stmt->fetchAll(PDO::FETCH_COLUMN));
+
+    $stmt = $pdo->prepare("SELECT signature_path FROM maint_interventions WHERE maintenance_id = ? AND signature_path IS NOT NULL");
+    $stmt->execute([$id]);
+    $storedNames = array_merge($storedNames, $stmt->fetchAll(PDO::FETCH_COLUMN));
+
+    $pdo->prepare("DELETE FROM maint_maintenances WHERE id = ?")->execute([$id]);
+
+    foreach (array_filter($storedNames) as $storedName) {
+        mnt_delete_stored_file($storedName);
+    }
+
+    mnt_log($pdo, 'maintenance_deleted', (int)$maintenance['equipment_id'], null, null, $currentUserId, null, $maintenance['title']);
+
+    mnt_json_ok();
+} catch (Throwable $e) {
+    mnt_json_fail('Errore: ' . $e->getMessage());
+}

public/userarea/manutenzioni/ajax/download_file.php

@@ -0,0 +1,72 @@
+<?php
+
+/**
+ * Serves an attachment. The attachments/ folder itself is closed by
+ * .htaccess — this is the only way to read a file, and it requires a
+ * logged-in session.
+ *
+ * scope = equipment | maintenance | intervention | signature
+ */
+
+if (session_status() === PHP_SESSION_NONE) {
+    session_start();
+}
+
+if (empty($_SESSION['iduserlogin'])) {
+    http_response_code(401);
+    exit('Non autorizzato.');
+}
+
+require_once __DIR__ . '/../include/functions.php';
+
+$scope = (string)($_GET['scope'] ?? 'equipment');
+$id = (int)($_GET['id'] ?? 0);
+
+if ($id <= 0) {
+    http_response_code(400);
+    exit('ID non valido.');
+}
+
+$tables = [
+    'equipment'    => 'inv_equipment_files',
+    'maintenance'  => 'maint_maintenance_files',
+    'intervention' => 'maint_intervention_files',
+];
+
+$pdo = mnt_pdo();
+
+if ($scope === 'signature') {
+    $stmt = $pdo->prepare("SELECT signature_path AS stored_name, 'firma.png' AS original_name, 'image/png' AS mime_type FROM maint_interventions WHERE id = ?");
+    $stmt->execute([$id]);
+} elseif (isset($tables[$scope])) {
+    $stmt = $pdo->prepare("SELECT stored_name, original_name, mime_type FROM {$tables[$scope]} WHERE id = ?");
+    $stmt->execute([$id]);
+} else {
+    http_response_code(400);
+    exit('Scope non valido.');
+}
+
+$file = $stmt->fetch(PDO::FETCH_ASSOC);
+
+if (!$file || empty($file['stored_name'])) {
+    http_response_code(404);
+    exit('File non trovato.');
+}
+
+// basename() keeps a crafted stored_name from escaping the folder
+$path = __DIR__ . '/../attachments/' . basename((string)$file['stored_name']);
+
+if (!is_file($path)) {
+    http_response_code(404);
+    exit('File non presente sul server.');
+}
+
+$mimeType = $file['mime_type'] ?: 'application/octet-stream';
+$disposition = isset($_GET['download']) ? 'attachment' : 'inline';
+
+header('Content-Type: ' . $mimeType);
+header('Content-Length: ' . filesize($path));
+header('Content-Disposition: ' . $disposition . '; filename="' . rawurlencode((string)$file['original_name']) . '"');
+header('X-Content-Type-Options: nosniff');
+
+readfile($path);

public/userarea/manutenzioni/ajax/get_calendar_events.php

@@ -0,0 +1,80 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+mnt_require_permission('maintenance.calendar.view');
+
+/**
+ * FullCalendar feed for maintenance due dates.
+ * Optional filters: type=scheduled|extraordinary, category=<id>
+ */
+try {
+    $pdo = mnt_pdo();
+
+    $start = (string)($_GET['start'] ?? date('Y-m-01', strtotime('-6 months')));
+    $end   = (string)($_GET['end'] ?? date('Y-m-t', strtotime('+12 months')));
+    $type  = (string)($_GET['type'] ?? '');
+    $categoryId = (int)($_GET['category'] ?? 0);
+
+    // Le attrezzature dismesse o fuori servizio restano fuori dalle viste di
+    // pianificazione: è a questo che serve lo stato (capitolato §1).
+    $where = [
+        "m.is_active = 1",
+        "e.status = 'active'",
+        "m.next_due_date IS NOT NULL",
+        "m.next_due_date BETWEEN ? AND ?",
+    ];
+    $params = [substr($start, 0, 10), substr($end, 0, 10)];
+
+    if (array_key_exists($type, mnt_intervention_types())) {
+        $where[] = "m.intervention_type = ?";
+        $params[] = $type;
+    }
+    if ($categoryId > 0) {
+        $where[] = "e.category_id = ?";
+        $params[] = $categoryId;
+    }
+
+    $stmt = $pdo->prepare("
+        SELECT m.id, m.title, m.code, m.next_due_date, m.alert_days, m.is_critical, m.intervention_type,
+               e.id AS equipment_id, e.name AS equipment_name,
+               c.color AS category_color
+        FROM maint_maintenances m
+        INNER JOIN inv_equipment e ON e.id = m.equipment_id
+        LEFT JOIN inv_categories c ON c.id = e.category_id
+        WHERE " . implode(' AND ', $where) . "
+        ORDER BY m.next_due_date ASC
+    ");
+    $stmt->execute($params);
+
+    $events = [];
+
+    foreach ($stmt->fetchAll(PDO::FETCH_ASSOC) as $row) {
+        $state = mnt_due_state($row['next_due_date'], (int)$row['alert_days']);
+
+        // Overdue/soon override the category colour so urgency wins visually
+        $color = $state === 'overdue' ? '#dc3545' : ($state === 'due_soon' ? '#f0a202' : ($row['category_color'] ?: '#2f7d8f'));
+
+        $events[] = [
+            'id' => (int)$row['id'],
+            'title' => ($row['code'] ? $row['code'] . ' — ' : '') . $row['equipment_name'] . ': ' . $row['title'],
+            'start' => $row['next_due_date'],
+            'allDay' => true,
+            'backgroundColor' => $color,
+            'borderColor' => $color,
+            'extendedProps' => [
+                'equipmentId' => (int)$row['equipment_id'],
+                'equipmentName' => $row['equipment_name'],
+                'maintenanceTitle' => $row['title'],
+                'isCritical' => (int)$row['is_critical'] === 1,
+                'state' => $state,
+                'type' => $row['intervention_type'],
+            ],
+        ];
+    }
+
+    echo json_encode($events);
+} catch (Throwable $e) {
+    http_response_code(500);
+    echo json_encode(['error' => $e->getMessage()]);
+}

public/userarea/manutenzioni/ajax/get_equipment.php

@@ -0,0 +1,25 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+mnt_require_permission('maintenance.equipment.view');
+
+try {
+    $id = (int)($_GET['id'] ?? 0);
+
+    if ($id <= 0) {
+        mnt_json_fail('ID non valido.');
+    }
+
+    $stmt = mnt_pdo()->prepare("SELECT * FROM inv_equipment WHERE id = ?");
+    $stmt->execute([$id]);
+    $equipment = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    if (!$equipment) {
+        mnt_json_fail('Attrezzatura non trovata.');
+    }
+
+    mnt_json_ok(['equipment' => $equipment]);
+} catch (Throwable $e) {
+    mnt_json_fail('Errore: ' . $e->getMessage());
+}

public/userarea/manutenzioni/ajax/get_global_calendar_events.php

@@ -0,0 +1,122 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+/**
+ * Cumulative calendar feed: deadlines + trainings + maintenances.
+ * Each layer is returned only if the user may see that module, and only
+ * if the layer is requested via ?layers=deadlines,trainings,maintenances
+ */
+try {
+    $pdo = mnt_pdo();
+
+    $start = substr((string)($_GET['start'] ?? date('Y-m-01', strtotime('-6 months'))), 0, 10);
+    $end   = substr((string)($_GET['end'] ?? date('Y-m-t', strtotime('+12 months'))), 0, 10);
+
+    $requested = array_filter(explode(',', (string)($_GET['layers'] ?? 'deadlines,trainings,maintenances')));
+    $wants = fn(string $layer): bool => in_array($layer, $requested, true);
+
+    $events = [];
+
+    // ---- Maintenances --------------------------------------------------
+    if ($wants('maintenances') && mnt_user_can('maintenance.calendar.view')) {
+        $stmt = $pdo->prepare("
+            SELECT m.id, m.title, m.code, m.next_due_date, m.alert_days, m.is_critical,
+                   e.id AS equipment_id, e.name AS equipment_name
+            FROM maint_maintenances m
+            INNER JOIN inv_equipment e ON e.id = m.equipment_id
+            WHERE m.is_active = 1
+              AND e.status = 'active'
+              AND m.next_due_date BETWEEN ? AND ?
+        ");
+        $stmt->execute([$start, $end]);
+
+        foreach ($stmt->fetchAll(PDO::FETCH_ASSOC) as $row) {
+            $state = mnt_due_state($row['next_due_date'], (int)$row['alert_days']);
+            $color = $state === 'overdue' ? '#dc3545' : '#2f7d8f';
+
+            $events[] = [
+                'id' => 'maint-' . $row['id'],
+                'title' => '🔧 ' . $row['equipment_name'] . ': ' . $row['title'],
+                'start' => $row['next_due_date'],
+                'allDay' => true,
+                'backgroundColor' => $color,
+                'borderColor' => $color,
+                'extendedProps' => [
+                    'layer' => 'maintenances',
+                    'url' => 'manutenzioni/equipment.php?id=' . (int)$row['equipment_id'],
+                    'state' => $state,
+                ],
+            ];
+        }
+    }
+
+    // ---- Deadlines (scadenzario) --------------------------------------
+    if ($wants('deadlines') && mnt_user_can('deadlines.view')) {
+        $stmt = $pdo->prepare("
+            SELECT d.id, d.topic, d.due_date, d.status, d.notification_days, s.name AS subject_name
+            FROM scad_deadlines d
+            LEFT JOIN scad_subjects s ON s.id = d.subject_id
+            WHERE d.due_date BETWEEN ? AND ?
+        ");
+        $stmt->execute([$start, $end]);
+
+        foreach ($stmt->fetchAll(PDO::FETCH_ASSOC) as $row) {
+            $isCompleted = $row['status'] === 'completed';
+            $state = $isCompleted ? 'ok' : mnt_due_state($row['due_date'], (int)$row['notification_days']);
+            $color = $isCompleted ? '#6c757d' : ($state === 'overdue' ? '#b02a37' : '#6f42c1');
+
+            $events[] = [
+                'id' => 'scad-' . $row['id'],
+                'title' => '📅 ' . $row['topic'],
+                'start' => $row['due_date'],
+                'allDay' => true,
+                'backgroundColor' => $color,
+                'borderColor' => $color,
+                'extendedProps' => [
+                    'layer' => 'deadlines',
+                    'url' => 'scadenzario/detail.php?id=' . (int)$row['id'],
+                    'state' => $state,
+                ],
+            ];
+        }
+    }
+
+    // ---- Trainings (formazione) ---------------------------------------
+    if ($wants('trainings') && mnt_user_can('hr.trainings.view')) {
+        $stmt = $pdo->prepare("
+            SELECT t.id, t.next_due_date, t.reminder_days,
+                   tt.name AS topic_name,
+                   CONCAT(e.first_name, ' ', e.last_name) AS employee_name
+            FROM employee_trainings t
+            INNER JOIN training_topics tt ON tt.id = t.training_topic_id
+            INNER JOIN employees e ON e.id = t.employee_id
+            WHERE t.next_due_date IS NOT NULL AND t.next_due_date BETWEEN ? AND ?
+        ");
+        $stmt->execute([$start, $end]);
+
+        foreach ($stmt->fetchAll(PDO::FETCH_ASSOC) as $row) {
+            $state = mnt_due_state($row['next_due_date'], (int)($row['reminder_days'] ?? 0));
+            $color = $state === 'overdue' ? '#a94442' : '#198754';
+
+            $events[] = [
+                'id' => 'train-' . $row['id'],
+                'title' => '🎓 ' . $row['topic_name'] . ' — ' . $row['employee_name'],
+                'start' => $row['next_due_date'],
+                'allDay' => true,
+                'backgroundColor' => $color,
+                'borderColor' => $color,
+                'extendedProps' => [
+                    'layer' => 'trainings',
+                    'url' => 'trainings.php',
+                    'state' => $state,
+                ],
+            ];
+        }
+    }
+
+    echo json_encode($events);
+} catch (Throwable $e) {
+    http_response_code(500);
+    echo json_encode(['error' => $e->getMessage()]);
+}

public/userarea/manutenzioni/ajax/get_interventions.php

@@ -0,0 +1,51 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+mnt_require_permission('maintenance.maintenances.view');
+
+try {
+    $pdo = mnt_pdo();
+
+    $maintenanceId = (int)($_GET['maintenance_id'] ?? 0);
+    $interventionId = (int)($_GET['id'] ?? 0);
+
+    if ($interventionId > 0) {
+        $stmt = $pdo->prepare("SELECT * FROM maint_interventions WHERE id = ?");
+        $stmt->execute([$interventionId]);
+        $intervention = $stmt->fetch(PDO::FETCH_ASSOC);
+
+        if (!$intervention) {
+            mnt_json_fail('Intervento non trovato.');
+        }
+
+        $stmt = $pdo->prepare("SELECT id, original_name FROM maint_intervention_files WHERE intervention_id = ?");
+        $stmt->execute([$interventionId]);
+
+        mnt_json_ok([
+            'intervention' => $intervention,
+            'files' => $stmt->fetchAll(PDO::FETCH_ASSOC),
+        ]);
+    }
+
+    if ($maintenanceId <= 0) {
+        mnt_json_fail('ID non valido.');
+    }
+
+    $stmt = $pdo->prepare("
+        SELECT i.*,
+            CONCAT(e.first_name, ' ', e.last_name) AS operator_full_name,
+            s.supplier_name,
+            (SELECT COUNT(*) FROM maint_intervention_files f WHERE f.intervention_id = i.id) AS file_count
+        FROM maint_interventions i
+        LEFT JOIN employees e ON e.id = i.operator_employee_id
+        LEFT JOIN suppliers s ON s.idsupplier = i.supplier_id
+        WHERE i.maintenance_id = ?
+        ORDER BY i.performed_at DESC, i.id DESC
+    ");
+    $stmt->execute([$maintenanceId]);
+
+    mnt_json_ok(['interventions' => $stmt->fetchAll(PDO::FETCH_ASSOC)]);
+} catch (Throwable $e) {
+    mnt_json_fail('Errore: ' . $e->getMessage());
+}

public/userarea/manutenzioni/ajax/get_maintenance.php

@@ -0,0 +1,43 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+mnt_require_permission('maintenance.maintenances.view');
+
+try {
+    $pdo = mnt_pdo();
+
+    $id = (int)($_GET['id'] ?? 0);
+
+    if ($id <= 0) {
+        mnt_json_fail('ID non valido.');
+    }
+
+    $stmt = $pdo->prepare("
+        SELECT m.*, e.name AS equipment_name
+        FROM maint_maintenances m
+        INNER JOIN inv_equipment e ON e.id = m.equipment_id
+        WHERE m.id = ?
+    ");
+    $stmt->execute([$id]);
+    $maintenance = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    if (!$maintenance) {
+        mnt_json_fail('Manutenzione non trovata.');
+    }
+
+    $stmt = $pdo->prepare("
+        SELECT id, original_name, size
+        FROM maint_maintenance_files
+        WHERE maintenance_id = ?
+        ORDER BY created_at ASC
+    ");
+    $stmt->execute([$id]);
+
+    mnt_json_ok([
+        'maintenance' => $maintenance,
+        'files' => $stmt->fetchAll(PDO::FETCH_ASSOC),
+    ]);
+} catch (Throwable $e) {
+    mnt_json_fail('Errore: ' . $e->getMessage());
+}

public/userarea/manutenzioni/ajax/save_category.php

@@ -0,0 +1,53 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+mnt_require_permission('maintenance.manage');
+
+try {
+    $pdo = mnt_pdo();
+
+    $id           = (int)($_POST['id'] ?? 0);
+    $name         = trim((string)($_POST['name'] ?? ''));
+    $code         = trim((string)($_POST['code'] ?? ''));
+    $color        = trim((string)($_POST['color'] ?? '#6c757d'));
+    $requiresLine = !empty($_POST['requires_line']) ? 1 : 0;
+    $sortOrder    = (int)($_POST['sort_order'] ?? 999);
+    $isActive     = !empty($_POST['is_active']) ? 1 : 0;
+    $description  = trim((string)($_POST['description'] ?? ''));
+
+    if ($name === '') {
+        mnt_json_fail('Il nome è obbligatorio.');
+    }
+    if (!preg_match('/^#[0-9A-Fa-f]{6}$/', $color)) {
+        $color = '#6c757d';
+    }
+
+    // name is UNIQUE — check first so the user gets a readable message
+    $stmt = $pdo->prepare("SELECT id FROM inv_categories WHERE name = ? AND id <> ?");
+    $stmt->execute([$name, $id]);
+    if ($stmt->fetchColumn()) {
+        mnt_json_fail('Esiste già una categoria con questo nome.');
+    }
+
+    if ($id > 0) {
+        $stmt = $pdo->prepare("
+            UPDATE inv_categories
+            SET name = ?, code = ?, color = ?, requires_line = ?, sort_order = ?, is_active = ?, description = ?
+            WHERE id = ?
+        ");
+        $stmt->execute([$name, $code ?: null, $color, $requiresLine, $sortOrder, $isActive, $description ?: null, $id]);
+
+        mnt_json_ok(['id' => $id]);
+    }
+
+    $stmt = $pdo->prepare("
+        INSERT INTO inv_categories (name, code, color, requires_line, sort_order, is_active, description)
+        VALUES (?, ?, ?, ?, ?, ?, ?)
+    ");
+    $stmt->execute([$name, $code ?: null, $color, $requiresLine, $sortOrder, $isActive, $description ?: null]);
+
+    mnt_json_ok(['id' => (int)$pdo->lastInsertId()]);
+} catch (Throwable $e) {
+    mnt_json_fail('Errore: ' . $e->getMessage());
+}

public/userarea/manutenzioni/ajax/save_equipment.php

@@ -0,0 +1,95 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+mnt_require_permission('maintenance.manage');
+
+try {
+    $pdo = mnt_pdo();
+
+    $id                = (int)($_POST['id'] ?? 0);
+    $name              = trim((string)($_POST['name'] ?? ''));
+    $categoryId        = (int)($_POST['category_id'] ?? 0);
+    $lineId            = (int)($_POST['line_id'] ?? 0);
+    $registration      = trim((string)($_POST['registration_number'] ?? ''));
+    $serial            = trim((string)($_POST['serial_number'] ?? ''));
+    $batchLot          = trim((string)($_POST['batch_lot'] ?? ''));
+    $manufacturer      = trim((string)($_POST['manufacturer'] ?? ''));
+    $purchaseDate      = trim((string)($_POST['purchase_date'] ?? ''));
+    $commissioningDate = trim((string)($_POST['commissioning_date'] ?? ''));
+    $toolType          = trim((string)($_POST['tool_type'] ?? ''));
+    $status            = (string)($_POST['status'] ?? 'active');
+    $departmentId      = (int)($_POST['department_id'] ?? 0);
+    $location          = trim((string)($_POST['location'] ?? ''));
+    $description       = trim((string)($_POST['description'] ?? ''));
+    $notes             = trim((string)($_POST['notes'] ?? ''));
+
+    if ($name === '') {
+        mnt_json_fail('Il nome è obbligatorio.');
+    }
+    if ($categoryId <= 0) {
+        mnt_json_fail('La categoria è obbligatoria.');
+    }
+    if (!array_key_exists($status, mnt_equipment_statuses())) {
+        mnt_json_fail('Stato non valido.');
+    }
+
+    // A category flagged requires_line must carry a production line
+    $stmt = $pdo->prepare("SELECT requires_line FROM inv_categories WHERE id = ?");
+    $stmt->execute([$categoryId]);
+    $requiresLine = $stmt->fetchColumn();
+
+    if ($requiresLine === false) {
+        mnt_json_fail('Categoria inesistente.');
+    }
+    if ((int)$requiresLine === 1 && $lineId <= 0) {
+        mnt_json_fail('Per questa categoria la linea di produzione è obbligatoria.');
+    }
+
+    $values = [
+        'name'                => $name,
+        'category_id'         => $categoryId,
+        'line_id'             => $lineId ?: null,
+        'registration_number' => $registration ?: null,
+        'serial_number'       => $serial ?: null,
+        'batch_lot'           => $batchLot ?: null,
+        'manufacturer'        => $manufacturer ?: null,
+        'purchase_date'       => $purchaseDate ?: null,
+        'commissioning_date'  => $commissioningDate ?: null,
+        'tool_type'           => $toolType ?: null,
+        'status'              => $status,
+        'department_id'       => $departmentId ?: null,
+        'location'            => $location ?: null,
+        'description'         => $description ?: null,
+        'notes'               => $notes ?: null,
+    ];
+
+    if ($id > 0) {
+        $assignments = [];
+        foreach (array_keys($values) as $column) {
+            $assignments[] = "$column = :$column";
+        }
+
+        $stmt = $pdo->prepare("UPDATE inv_equipment SET " . implode(', ', $assignments) . " WHERE id = :id");
+        $stmt->execute($values + ['id' => $id]);
+
+        mnt_log($pdo, 'equipment_updated', $id, null, null, $currentUserId, $values);
+        mnt_json_ok(['id' => $id]);
+    }
+
+    $columns = array_keys($values);
+    $placeholders = array_map(fn($column) => ':' . $column, $columns);
+
+    $stmt = $pdo->prepare(
+        "INSERT INTO inv_equipment (" . implode(', ', $columns) . ", created_by)
+         VALUES (" . implode(', ', $placeholders) . ", :created_by)"
+    );
+    $stmt->execute($values + ['created_by' => $currentUserId]);
+
+    $newId = (int)$pdo->lastInsertId();
+    mnt_log($pdo, 'equipment_created', $newId, null, null, $currentUserId, $values);
+
+    mnt_json_ok(['id' => $newId]);
+} catch (Throwable $e) {
+    mnt_json_fail('Errore: ' . $e->getMessage());
+}

public/userarea/manutenzioni/ajax/save_intervention.php

@@ -0,0 +1,154 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+mnt_require_permission('maintenance.manage');
+
+/**
+ * Registers (or updates) one intervention against a maintenance and
+ * recomputes the maintenance schedule.
+ *
+ * The operator signature arrives as a data URL from the tablet canvas and
+ * is stored as a PNG in attachments/.
+ */
+try {
+    $pdo = mnt_pdo();
+
+    $id             = (int)($_POST['id'] ?? 0);
+    $maintenanceId  = (int)($_POST['maintenance_id'] ?? 0);
+    $performedAt    = trim((string)($_POST['performed_at'] ?? ''));
+    $status         = (string)($_POST['status'] ?? 'completed');
+    $result         = trim((string)($_POST['result'] ?? ''));
+    $notes          = trim((string)($_POST['notes'] ?? ''));
+    $materials      = trim((string)($_POST['materials'] ?? ''));
+    $operatorId     = (int)($_POST['operator_employee_id'] ?? 0);
+    $operatorName   = trim((string)($_POST['operator_name'] ?? ''));
+    $supplierId     = (int)($_POST['supplier_id'] ?? 0);
+    $signatureData  = (string)($_POST['signature'] ?? '');
+    $clearSignature = !empty($_POST['clear_signature']);
+
+    if ($performedAt === '' || !preg_match('/^\d{4}-\d{2}-\d{2}$/', $performedAt)) {
+        mnt_json_fail('La data dell\'intervento è obbligatoria.');
+    }
+
+    $validStatuses = mnt_lookup($pdo, 'maint_status', ['planned' => '', 'in_progress' => '', 'completed' => '']);
+    if (!array_key_exists($status, $validStatuses)) {
+        mnt_json_fail('Stato intervento non valido.');
+    }
+
+    $validResults = mnt_lookup($pdo, 'maint_result', []);
+    if ($result !== '' && $validResults && !array_key_exists($result, $validResults)) {
+        mnt_json_fail('Esito intervento non valido.');
+    }
+
+    // Existing row: maintenance is taken from the record, not from the client
+    if ($id > 0) {
+        $stmt = $pdo->prepare("SELECT * FROM maint_interventions WHERE id = ?");
+        $stmt->execute([$id]);
+        $existing = $stmt->fetch(PDO::FETCH_ASSOC);
+
+        if (!$existing) {
+            mnt_json_fail('Intervento non trovato.');
+        }
+
+        $maintenanceId = (int)$existing['maintenance_id'];
+        $equipmentId = (int)$existing['equipment_id'];
+        $signaturePath = $existing['signature_path'];
+    } else {
+        $stmt = $pdo->prepare("SELECT equipment_id FROM maint_maintenances WHERE id = ?");
+        $stmt->execute([$maintenanceId]);
+        $equipmentId = (int)$stmt->fetchColumn();
+
+        if (!$equipmentId) {
+            mnt_json_fail('Manutenzione non trovata.');
+        }
+
+        $signaturePath = null;
+    }
+
+    // Signature handling
+    if ($clearSignature && $signaturePath) {
+        mnt_delete_stored_file((string)$signaturePath);
+        $signaturePath = null;
+    }
+
+    if ($signatureData !== '' && preg_match('#^data:image/png;base64,#', $signatureData)) {
+        $binary = base64_decode(substr($signatureData, strlen('data:image/png;base64,')), true);
+
+        if ($binary === false || strlen($binary) > 2 * 1024 * 1024) {
+            mnt_json_fail('Firma non valida.');
+        }
+
+        $uploadDir = __DIR__ . '/../attachments/';
+        if (!is_dir($uploadDir) && !mkdir($uploadDir, 0755, true) && !is_dir($uploadDir)) {
+            mnt_json_fail('Cartella allegati non scrivibile.');
+        }
+
+        $newSignature = uniqid('sig_', true) . '.png';
+        $newSignature = preg_replace('/[^A-Za-z0-9._-]/', '_', $newSignature);
+
+        if (file_put_contents($uploadDir . $newSignature, $binary) === false) {
+            mnt_json_fail('Impossibile salvare la firma.');
+        }
+
+        if ($signaturePath) {
+            mnt_delete_stored_file((string)$signaturePath);
+        }
+
+        $signaturePath = $newSignature;
+    }
+
+    $values = [
+        'performed_at'         => $performedAt,
+        'status'               => $status,
+        'result'               => $result ?: null,
+        'notes'                => $notes ?: null,
+        'materials'            => $materials ?: null,
+        'operator_employee_id' => $operatorId ?: null,
+        'operator_name'        => $operatorName ?: null,
+        'supplier_id'          => $supplierId ?: null,
+        'signature_path'       => $signaturePath,
+    ];
+
+    if ($id > 0) {
+        $assignments = [];
+        foreach (array_keys($values) as $column) {
+            $assignments[] = "$column = :$column";
+        }
+
+        $stmt = $pdo->prepare("UPDATE maint_interventions SET " . implode(', ', $assignments) . " WHERE id = :id");
+        $stmt->execute($values + ['id' => $id]);
+
+        $interventionId = $id;
+        $action = 'intervention_updated';
+    } else {
+        $values['maintenance_id'] = $maintenanceId;
+        $values['equipment_id'] = $equipmentId;
+        $values['created_by'] = $currentUserId;
+
+        $columns = array_keys($values);
+        $placeholders = array_map(fn($column) => ':' . $column, $columns);
+
+        $stmt = $pdo->prepare(
+            "INSERT INTO maint_interventions (" . implode(', ', $columns) . ")
+             VALUES (" . implode(', ', $placeholders) . ")"
+        );
+        $stmt->execute($values);
+
+        $interventionId = (int)$pdo->lastInsertId();
+        $action = 'intervention_created';
+    }
+
+    // Only completed interventions move the next due date; this call handles it
+    mnt_recalc_maintenance($pdo, $maintenanceId);
+
+    mnt_log($pdo, $action, $equipmentId, $maintenanceId, $interventionId, $currentUserId, $values);
+
+    $stmt = $pdo->prepare("SELECT last_done_date, next_due_date FROM maint_maintenances WHERE id = ?");
+    $stmt->execute([$maintenanceId]);
+    $schedule = $stmt->fetch(PDO::FETCH_ASSOC) ?: [];
+
+    mnt_json_ok(['id' => $interventionId, 'schedule' => $schedule]);
+} catch (Throwable $e) {
+    mnt_json_fail('Errore: ' . $e->getMessage());
+}

public/userarea/manutenzioni/ajax/save_maintenance.php

@@ -0,0 +1,121 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+mnt_require_permission('maintenance.manage');
+
+try {
+    $pdo = mnt_pdo();
+
+    $id              = (int)($_POST['id'] ?? 0);
+    $equipmentId     = (int)($_POST['equipment_id'] ?? 0);
+    $code            = trim((string)($_POST['code'] ?? ''));
+    $title           = trim((string)($_POST['title'] ?? ''));
+    $description     = trim((string)($_POST['description'] ?? ''));
+    $interventionType = (string)($_POST['intervention_type'] ?? 'scheduled');
+    $executionType   = (string)($_POST['execution_type'] ?? 'internal');
+    $isCritical      = !empty($_POST['is_critical']) ? 1 : 0;
+    $frequencyUnit   = (string)($_POST['frequency_unit'] ?? 'month');
+    $frequencyValue  = (int)($_POST['frequency_value'] ?? 0);
+    $frequencyNote   = trim((string)($_POST['frequency_note'] ?? ''));
+    $alertDays       = (int)($_POST['alert_days'] ?? 7);
+    $assigneeId      = (int)($_POST['assignee_employee_id'] ?? 0);
+    $supervisorId    = (int)($_POST['supervisor_employee_id'] ?? 0);
+    $supplierId      = (int)($_POST['supplier_id'] ?? 0);
+    $isActive        = isset($_POST['is_active']) ? (int)!empty($_POST['is_active']) : 1;
+    $notes           = trim((string)($_POST['notes'] ?? ''));
+
+    if ($title === '') {
+        mnt_json_fail('Il titolo è obbligatorio.');
+    }
+    if (!array_key_exists($interventionType, mnt_intervention_types())) {
+        mnt_json_fail('Tipo di intervento non valido.');
+    }
+    if (!array_key_exists($executionType, mnt_execution_types())) {
+        mnt_json_fail('Tipo di esecuzione non valido.');
+    }
+    if (!array_key_exists($frequencyUnit, mnt_frequency_units())) {
+        mnt_json_fail('Unità di frequenza non valida.');
+    }
+    if ($frequencyUnit !== 'on_demand' && $frequencyValue <= 0) {
+        mnt_json_fail('Indica ogni quanto va eseguita la manutenzione, oppure scegli "Al bisogno".');
+    }
+    if ($executionType === 'external' && $supplierId <= 0) {
+        mnt_json_fail('Per una manutenzione esterna indica il fornitore.');
+    }
+
+    if ($frequencyUnit === 'on_demand') {
+        $frequencyValue = null;
+    }
+
+    $values = [
+        'code'                   => $code ?: null,
+        'title'                  => $title,
+        'description'            => $description ?: null,
+        'intervention_type'      => $interventionType,
+        'execution_type'         => $executionType,
+        'is_critical'            => $isCritical,
+        'frequency_value'        => $frequencyValue,
+        'frequency_unit'         => $frequencyUnit,
+        'frequency_note'         => $frequencyNote ?: null,
+        'alert_days'             => max(0, $alertDays),
+        'assignee_employee_id'   => $assigneeId ?: null,
+        'supervisor_employee_id' => $supervisorId ?: null,
+        'supplier_id'            => $supplierId ?: null,
+        'is_active'              => $isActive,
+        'notes'                  => $notes ?: null,
+    ];
+
+    if ($id > 0) {
+        $stmt = $pdo->prepare("SELECT equipment_id FROM maint_maintenances WHERE id = ?");
+        $stmt->execute([$id]);
+        $equipmentId = (int)$stmt->fetchColumn();
+
+        if (!$equipmentId) {
+            mnt_json_fail('Manutenzione non trovata.');
+        }
+
+        $assignments = [];
+        foreach (array_keys($values) as $column) {
+            $assignments[] = "$column = :$column";
+        }
+
+        $stmt = $pdo->prepare("UPDATE maint_maintenances SET " . implode(', ', $assignments) . " WHERE id = :id");
+        $stmt->execute($values + ['id' => $id]);
+
+        // frequency may have changed — the due date must follow
+        mnt_recalc_maintenance($pdo, $id);
+        mnt_log($pdo, 'maintenance_updated', $equipmentId, $id, null, $currentUserId, $values);
+
+        mnt_json_ok(['id' => $id]);
+    }
+
+    if ($equipmentId <= 0) {
+        mnt_json_fail('Attrezzatura non valida.');
+    }
+
+    $stmt = $pdo->prepare("SELECT id FROM inv_equipment WHERE id = ?");
+    $stmt->execute([$equipmentId]);
+    if (!$stmt->fetchColumn()) {
+        mnt_json_fail('Attrezzatura non trovata.');
+    }
+
+    $values['equipment_id'] = $equipmentId;
+    $values['created_by'] = $currentUserId;
+
+    $columns = array_keys($values);
+    $placeholders = array_map(fn($column) => ':' . $column, $columns);
+
+    $stmt = $pdo->prepare(
+        "INSERT INTO maint_maintenances (" . implode(', ', $columns) . ")
+         VALUES (" . implode(', ', $placeholders) . ")"
+    );
+    $stmt->execute($values);
+
+    $newId = (int)$pdo->lastInsertId();
+    mnt_log($pdo, 'maintenance_created', $equipmentId, $newId, null, $currentUserId, $values);
+
+    mnt_json_ok(['id' => $newId]);
+} catch (Throwable $e) {
+    mnt_json_fail('Errore: ' . $e->getMessage());
+}

public/userarea/manutenzioni/ajax/set_cover.php

@@ -0,0 +1,35 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+mnt_require_permission('maintenance.manage');
+
+try {
+    $pdo = mnt_pdo();
+
+    $fileId = (int)($_POST['file_id'] ?? 0);
+
+    if ($fileId <= 0) {
+        mnt_json_fail('ID non valido.');
+    }
+
+    $stmt = $pdo->prepare("SELECT equipment_id, kind FROM inv_equipment_files WHERE id = ?");
+    $stmt->execute([$fileId]);
+    $file = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    if (!$file) {
+        mnt_json_fail('Immagine non trovata.');
+    }
+    if ($file['kind'] !== 'photo') {
+        mnt_json_fail('Solo una foto può essere usata come copertina.');
+    }
+
+    $pdo->prepare("UPDATE inv_equipment SET cover_file_id = ? WHERE id = ?")
+        ->execute([$fileId, (int)$file['equipment_id']]);
+
+    mnt_log($pdo, 'cover_changed', (int)$file['equipment_id'], null, null, $currentUserId);
+
+    mnt_json_ok();
+} catch (Throwable $e) {
+    mnt_json_fail('Errore: ' . $e->getMessage());
+}

public/userarea/manutenzioni/ajax/upload_file.php

@@ -0,0 +1,105 @@
+<?php
+
+require_once __DIR__ . '/auth_check.php';
+
+mnt_require_permission('maintenance.manage');
+
+/**
+ * Multi-file upload for the three attachment tables.
+ * scope = equipment | maintenance | intervention
+ * kind  = file | photo   (equipment only; photos feed the gallery)
+ */
+try {
+    $pdo = mnt_pdo();
+
+    $scope = (string)($_POST['scope'] ?? 'equipment');
+    $ownerId = (int)($_POST['owner_id'] ?? 0);
+    $kind = ($_POST['kind'] ?? 'file') === 'photo' ? 'photo' : 'file';
+
+    $config = [
+        'equipment'    => ['table' => 'inv_equipment_files',      'owner' => 'equipment_id',    'parent' => 'inv_equipment'],
+        'maintenance'  => ['table' => 'maint_maintenance_files',  'owner' => 'maintenance_id',  'parent' => 'maint_maintenances'],
+        'intervention' => ['table' => 'maint_intervention_files', 'owner' => 'intervention_id', 'parent' => 'maint_interventions'],
+    ];
+
+    if (!isset($config[$scope])) {
+        mnt_json_fail('Scope non valido.');
+    }
+    if ($ownerId <= 0) {
+        mnt_json_fail('ID non valido.');
+    }
+    if (empty($_FILES['files']['name'][0])) {
+        mnt_json_fail('Nessun file selezionato.');
+    }
+
+    $target = $config[$scope];
+
+    $stmt = $pdo->prepare("SELECT id FROM {$target['parent']} WHERE id = ?");
+    $stmt->execute([$ownerId]);
+    if (!$stmt->fetchColumn()) {
+        mnt_json_fail('Record collegato non trovato.');
+    }
+
+    $columns = $scope === 'equipment'
+        ? "({$target['owner']}, kind, original_name, stored_name, mime_type, size, uploaded_by)"
+        : "({$target['owner']}, original_name, stored_name, mime_type, size, uploaded_by)";
+    $placeholders = $scope === 'equipment' ? '(?, ?, ?, ?, ?, ?, ?)' : '(?, ?, ?, ?, ?, ?)';
+
+    $insert = $pdo->prepare("INSERT INTO {$target['table']} $columns VALUES $placeholders");
+
+    $uploaded = [];
+    $errors = [];
+    $fileCount = count($_FILES['files']['name']);
+
+    for ($i = 0; $i < $fileCount; $i++) {
+        $file = [
+            'name'     => $_FILES['files']['name'][$i],
+            'type'     => $_FILES['files']['type'][$i],
+            'tmp_name' => $_FILES['files']['tmp_name'][$i],
+            'error'    => $_FILES['files']['error'][$i],
+            'size'     => $_FILES['files']['size'][$i],
+        ];
+
+        try {
+            $stored = mnt_store_upload($file, $scope);
+        } catch (RuntimeException $e) {
+            $errors[] = $file['name'] . ': ' . $e->getMessage();
+            continue;
+        }
+
+        // A file uploaded as a photo but not actually an image is kept as a file
+        $rowKind = ($kind === 'photo' && $stored['is_image']) ? 'photo' : 'file';
+
+        $values = $scope === 'equipment'
+            ? [$ownerId, $rowKind, $stored['original_name'], $stored['stored_name'], $stored['mime_type'], $stored['size'], $currentUserId]
+            : [$ownerId, $stored['original_name'], $stored['stored_name'], $stored['mime_type'], $stored['size'], $currentUserId];
+
+        $insert->execute($values);
+        $uploaded[] = ['id' => (int)$pdo->lastInsertId(), 'name' => $stored['original_name']];
+    }
+
+    if (!$uploaded) {
+        mnt_json_fail($errors ? implode('; ', $errors) : 'Nessun file caricato.');
+    }
+
+    // The first photo of an item becomes its cover automatically
+    if ($scope === 'equipment' && $kind === 'photo') {
+        $stmt = $pdo->prepare("SELECT cover_file_id FROM inv_equipment WHERE id = ?");
+        $stmt->execute([$ownerId]);
+        if (!$stmt->fetchColumn()) {
+            $pdo->prepare("UPDATE inv_equipment SET cover_file_id = ? WHERE id = ?")
+                ->execute([$uploaded[0]['id'], $ownerId]);
+        }
+    }
+
+    $equipmentId = $scope === 'equipment' ? $ownerId : null;
+    $maintenanceId = $scope === 'maintenance' ? $ownerId : null;
+    $interventionId = $scope === 'intervention' ? $ownerId : null;
+
+    mnt_log($pdo, 'file_added', $equipmentId, $maintenanceId, $interventionId, $currentUserId, null,
+        implode(', ', array_column($uploaded, 'name')));
+
+    mnt_json_ok(['uploaded' => $uploaded, 'errors' => $errors]);
+} catch (Throwable $e) {
+    mnt_json_fail('Errore: ' . $e->getMessage());
+}

public/userarea/manutenzioni/assets/fullcalendar-it.js

@@ -0,0 +1,6 @@
+/*!
+FullCalendar Core v6.1.9
+Docs & License: https://fullcalendar.io
+(c) 2023 Adam Shaw
+*/
+!function(e){"use strict";var t={code:"it",week:{dow:1,doy:4},buttonText:{prev:"Prec",next:"Succ",today:"Oggi",year:"Anno",month:"Mese",week:"Settimana",day:"Giorno",list:"Agenda"},weekText:"Sm",allDayText:"Tutto il giorno",moreLinkText:e=>"+altri "+e,noEventsText:"Non ci sono eventi da visualizzare"};FullCalendar.globalLocales.push(t)}();

public/userarea/manutenzioni/attachments/.gitignore

@@ -0,0 +1,3 @@
+*
+!.gitignore
+!.htaccess

public/userarea/manutenzioni/attachments/.htaccess

@@ -0,0 +1 @@
+Deny from all

public/userarea/manutenzioni/calendar.php

@@ -0,0 +1,120 @@
+<?php include(__DIR__ . '/../include/headscript.php'); ?>
+<?php
+require_once __DIR__ . '/include/functions.php';
+
+$pdo = mnt_pdo();
+
+if (!userCan('maintenance.calendar.view')) {
+    http_response_code(403);
+    exit('Permesso negato.');
+}
+
+$formData = mnt_form_data($pdo);
+
+$MNT_TITLE = 'Calendario manutenzioni';
+$MNT_PLUGINS = ['fullcalendar'];
+?>
+<!doctype html>
+<html lang="it">
+
+<head>
+    <?php include __DIR__ . '/include/page_head.php'; ?>
+    <style>
+        #mntCalendar { --fc-border-color: #e6eef0; }
+        #mntCalendar .fc-toolbar-title { font-size: 1.05rem; font-weight: 700; color: var(--mnt-heading); }
+        #mntCalendar .fc-event { cursor: pointer; font-size: 0.75rem; }
+        @media (max-width: 767.98px) {
+            #mntCalendar .fc-toolbar { flex-direction: column; gap: 0.5rem; }
+        }
+    </style>
+</head>
+
+<body>
+    <?php include __DIR__ . '/include/wrapper_open.php'; ?>
+        <?php include(__DIR__ . '/../include/navbar.php'); ?>
+        <?php include(__DIR__ . '/../include/topbar.php'); ?>
+
+        <div class="page-wrapper">
+            <div class="page-content">
+
+                <div class="card mnt-card">
+                    <div class="card-header d-flex align-items-center justify-content-between flex-wrap gap-2">
+                        <h5><i class="fa-solid fa-calendar-days me-2"></i>Calendario manutenzioni</h5>
+                        <div class="header-actions d-flex gap-2 flex-wrap">
+                            <a href="manutenzioni/calendar_global.php" class="btn btn-mnt-outline d-inline-flex align-items-center gap-2">
+                                <i class="fa-solid fa-layer-group"></i><span>Calendario cumulativo</span>
+                            </a>
+                            <a href="manutenzioni/maintenances.php" class="btn btn-mnt-outline d-inline-flex align-items-center gap-2">
+                                <i class="fa-solid fa-list"></i><span>Elenco</span>
+                            </a>
+                        </div>
+                    </div>
+
+                    <div class="card-body">
+                        <div class="mnt-filter-bar">
+                            <select class="form-select" id="filterType">
+                                <option value="">Programmate e straordinarie</option>
+                                <?php foreach (mnt_intervention_types() as $value => $label): ?>
+                                    <option value="<?= mnt_h($value) ?>">Solo <?= mnt_h(mb_strtolower($label)) ?></option>
+                                <?php endforeach; ?>
+                            </select>
+
+                            <select class="form-select" id="filterCategory">
+                                <option value="">Tutte le categorie</option>
+                                <?php foreach ($formData['categories'] as $category): ?>
+                                    <option value="<?= (int)$category['id'] ?>"><?= mnt_h($category['name']) ?></option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+
+                        <div class="d-flex gap-3 flex-wrap mb-3 small">
+                            <span><span class="mnt-badge mnt-badge-overdue">Scaduta</span></span>
+                            <span><span class="mnt-badge mnt-badge-soon">In scadenza</span></span>
+                            <span><span class="mnt-badge mnt-badge-ok">In regola (colore della categoria)</span></span>
+                        </div>
+
+                        <div id="mntCalendar"></div>
+                    </div>
+                </div>
+
+            </div>
+        </div>
+        <?php include(__DIR__ . '/../include/footer.php'); ?>
+    </div>
+
+    <?php include(__DIR__ . '/../jsinclude.php'); ?>
+    <script>
+        document.addEventListener('DOMContentLoaded', function () {
+            const el = document.getElementById('mntCalendar');
+            const isMobile = window.innerWidth < 768;
+
+            const calendar = new FullCalendar.Calendar(el, {
+                locale: 'it',
+                initialView: isMobile ? 'listMonth' : 'dayGridMonth',
+                headerToolbar: {
+                    left: 'prev,next today',
+                    center: 'title',
+                    right: isMobile ? 'listMonth,dayGridMonth' : 'dayGridMonth,listMonth'
+                },
+                height: 'auto',
+                firstDay: 1,
+                events: function (info, success, failure) {
+                    $.getJSON('manutenzioni/ajax/get_calendar_events.php', {
+                        start: info.startStr,
+                        end: info.endStr,
+                        type: $('#filterType').val(),
+                        category: $('#filterCategory').val()
+                    }).done(success).fail(failure);
+                },
+                eventClick: function (info) {
+                    window.location = 'manutenzioni/equipment.php?id=' + info.event.extendedProps.equipmentId;
+                }
+            });
+
+            calendar.render();
+            $('#filterType, #filterCategory').on('change', () => calendar.refetchEvents());
+        });
+    </script>
+</body>
+
+</html>

public/userarea/manutenzioni/calendar_global.php

@@ -0,0 +1,127 @@
+<?php include(__DIR__ . '/../include/headscript.php'); ?>
+<?php
+require_once __DIR__ . '/include/functions.php';
+
+// Cumulative calendar: deadlines + trainings + maintenances.
+// Visible to anyone who can see at least one of the three modules; each
+// layer is filtered again on the backend by its own permission.
+$layers = [
+    'deadlines'    => ['label' => 'Scadenze',     'permission' => 'deadlines.view',           'color' => '#6f42c1', 'icon' => '📅'],
+    'trainings'    => ['label' => 'Formazione',   'permission' => 'hr.trainings.view',        'color' => '#198754', 'icon' => '🎓'],
+    'maintenances' => ['label' => 'Manutenzioni', 'permission' => 'maintenance.calendar.view', 'color' => '#2f7d8f', 'icon' => '🔧'],
+];
+
+$availableLayers = array_filter($layers, fn($layer) => userCan($layer['permission']));
+
+if (!$availableLayers) {
+    http_response_code(403);
+    exit('Permesso negato.');
+}
+
+$MNT_TITLE = 'Calendario cumulativo';
+$MNT_PLUGINS = ['fullcalendar'];
+?>
+<!doctype html>
+<html lang="it">
+
+<head>
+    <?php include __DIR__ . '/include/page_head.php'; ?>
+    <style>
+        #mntGlobalCalendar { --fc-border-color: #e6eef0; }
+        #mntGlobalCalendar .fc-toolbar-title { font-size: 1.05rem; font-weight: 700; color: var(--mnt-heading); }
+        #mntGlobalCalendar .fc-event { cursor: pointer; font-size: 0.75rem; }
+        .mnt-layer-toggle { display: inline-flex; align-items: center; gap: 0.45rem; padding: 0.35rem 0.75rem; border-radius: 999px; border: 1.5px solid var(--layer-color); color: var(--layer-color); font-weight: 600; font-size: 0.8rem; cursor: pointer; user-select: none; transition: all 0.15s; }
+        .mnt-layer-toggle input { display: none; }
+        .mnt-layer-toggle.is-on { background: var(--layer-color); color: #fff; }
+        @media (max-width: 767.98px) {
+            #mntGlobalCalendar .fc-toolbar { flex-direction: column; gap: 0.5rem; }
+        }
+    </style>
+</head>
+
+<body>
+    <?php include __DIR__ . '/include/wrapper_open.php'; ?>
+        <?php include(__DIR__ . '/../include/navbar.php'); ?>
+        <?php include(__DIR__ . '/../include/topbar.php'); ?>
+
+        <div class="page-wrapper">
+            <div class="page-content">
+
+                <div class="card mnt-card">
+                    <div class="card-header d-flex align-items-center justify-content-between flex-wrap gap-2">
+                        <h5><i class="fa-solid fa-layer-group me-2"></i>Calendario cumulativo</h5>
+                        <div class="header-actions d-flex gap-2 flex-wrap">
+                            <?php if (userCan('maintenance.calendar.view')): ?>
+                                <a href="manutenzioni/calendar.php" class="btn btn-mnt-outline d-inline-flex align-items-center gap-2">
+                                    <i class="fa-solid fa-calendar-days"></i><span>Solo manutenzioni</span>
+                                </a>
+                            <?php endif; ?>
+                        </div>
+                    </div>
+
+                    <div class="card-body">
+                        <div class="d-flex gap-2 flex-wrap mb-3">
+                            <?php foreach ($availableLayers as $key => $layer): ?>
+                                <label class="mnt-layer-toggle is-on" style="--layer-color: <?= mnt_h($layer['color']) ?>">
+                                    <input type="checkbox" class="layer-checkbox" value="<?= mnt_h($key) ?>" checked>
+                                    <span><?= $layer['icon'] ?> <?= mnt_h($layer['label']) ?></span>
+                                </label>
+                            <?php endforeach; ?>
+                        </div>
+
+                        <div id="mntGlobalCalendar"></div>
+                    </div>
+                </div>
+
+            </div>
+        </div>
+        <?php include(__DIR__ . '/../include/footer.php'); ?>
+    </div>
+
+    <?php include(__DIR__ . '/../jsinclude.php'); ?>
+    <script>
+        document.addEventListener('DOMContentLoaded', function () {
+            const el = document.getElementById('mntGlobalCalendar');
+            const isMobile = window.innerWidth < 768;
+
+            function activeLayers() {
+                return $('.layer-checkbox:checked').map((i, cb) => cb.value).get().join(',');
+            }
+
+            const calendar = new FullCalendar.Calendar(el, {
+                locale: 'it',
+                initialView: isMobile ? 'listMonth' : 'dayGridMonth',
+                headerToolbar: {
+                    left: 'prev,next today',
+                    center: 'title',
+                    right: isMobile ? 'listMonth,dayGridMonth' : 'dayGridMonth,listMonth'
+                },
+                height: 'auto',
+                firstDay: 1,
+                events: function (info, success, failure) {
+                    const layers = activeLayers();
+                    if (!layers) { success([]); return; }
+
+                    $.getJSON('manutenzioni/ajax/get_global_calendar_events.php', {
+                        start: info.startStr,
+                        end: info.endStr,
+                        layers: layers
+                    }).done(success).fail(failure);
+                },
+                eventClick: function (info) {
+                    const url = info.event.extendedProps.url;
+                    if (url) { window.location = url; }
+                }
+            });
+
+            calendar.render();
+
+            $('.layer-checkbox').on('change', function () {
+                $(this).closest('.mnt-layer-toggle').toggleClass('is-on', this.checked);
+                calendar.refetchEvents();
+            });
+        });
+    </script>
+</body>
+
+</html>

public/userarea/manutenzioni/categories/index.php

@@ -0,0 +1,278 @@
+<?php include(__DIR__ . '/../../include/headscript.php'); ?>
+<?php
+require_once __DIR__ . '/../include/functions.php';
+
+$pdo = mnt_pdo();
+
+if (!userCan('maintenance.categories.view')) {
+    http_response_code(403);
+    exit('Permesso negato.');
+}
+
+$canManage = userCan('maintenance.manage');
+
+$categories = $pdo->query("
+    SELECT c.*,
+        (SELECT COUNT(*) FROM inv_equipment e WHERE e.category_id = c.id) AS equipment_count
+    FROM inv_categories c
+    ORDER BY c.sort_order ASC, c.name ASC
+")->fetchAll(PDO::FETCH_ASSOC);
+
+$MNT_TITLE = 'Categorie attrezzature';
+?>
+<!doctype html>
+<html lang="it">
+
+<head>
+    <?php include __DIR__ . '/../include/page_head.php'; ?>
+</head>
+
+<body>
+    <?php include __DIR__ . '/../include/wrapper_open.php'; ?>
+        <?php include(__DIR__ . '/../../include/navbar.php'); ?>
+        <?php include(__DIR__ . '/../../include/topbar.php'); ?>
+
+        <div class="page-wrapper">
+            <div class="page-content">
+
+                <nav aria-label="breadcrumb" class="mb-3">
+                    <ol class="breadcrumb" style="background:transparent;padding:0;margin:0;font-size:0.85rem">
+                        <li class="breadcrumb-item"><a href="manutenzioni/index.php">Registro attrezzature</a></li>
+                        <li class="breadcrumb-item active" aria-current="page">Categorie</li>
+                    </ol>
+                </nav>
+
+                <div class="card mnt-card">
+                    <div class="card-header d-flex align-items-center justify-content-between flex-wrap gap-2">
+                        <h5><i class="fa-solid fa-tags me-2"></i>Categorie attrezzature</h5>
+                        <div class="header-actions d-flex gap-2 flex-wrap">
+                            <a href="manutenzioni/index.php" class="btn btn-mnt-outline d-inline-flex align-items-center gap-2">
+                                <i class="fa-solid fa-arrow-left"></i><span>Registro</span>
+                            </a>
+                            <?php if ($canManage): ?>
+                                <button class="btn btn-mnt-primary d-inline-flex align-items-center gap-2" id="btnAddCategory">
+                                    <i class="fa-solid fa-plus"></i><span>Nuova categoria</span>
+                                </button>
+                            <?php endif; ?>
+                        </div>
+                    </div>
+
+                    <div class="card-body">
+                        <?php if (!$categories): ?>
+                            <div class="empty-state">
+                                <i class="fa-solid fa-tags"></i>
+                                <p>Nessuna categoria definita.</p>
+                            </div>
+                        <?php else: ?>
+                            <div id="categoryList">
+                                <!-- MOBILE -->
+                                <div class="d-md-none">
+                                    <?php foreach ($categories as $category): ?>
+                                        <div class="mnt-item-card" style="--row-color: <?= mnt_h($category['color']) ?>"
+                                            data-id="<?= (int)$category['id'] ?>"
+                                            data-json="<?= mnt_h(json_encode($category, JSON_UNESCAPED_UNICODE)) ?>">
+                                            <div class="ic-title"><?= mnt_h($category['name']) ?></div>
+                                            <div class="ic-meta">
+                                                Attrezzature: <strong><?= (int)$category['equipment_count'] ?></strong>
+                                                <?php if ((int)$category['requires_line'] === 1): ?>
+                                                    · <span class="mnt-badge mnt-badge-soft">Richiede linea</span>
+                                                <?php endif; ?>
+                                                <?php if ((int)$category['is_active'] === 0): ?>
+                                                    · <span class="mnt-badge mnt-badge-none">Disattivata</span>
+                                                <?php endif; ?>
+                                            </div>
+                                            <?php if ($canManage): ?>
+                                                <div class="ic-actions">
+                                                    <button class="btn-action btn-action-edit btn-edit"><i class="fa-solid fa-pen"></i></button>
+                                                    <button class="btn-action btn-action-delete btn-delete"
+                                                        data-name="<?= mnt_h($category['name']) ?>"
+                                                        data-count="<?= (int)$category['equipment_count'] ?>">
+                                                        <i class="fa-solid fa-trash"></i>
+                                                    </button>
+                                                </div>
+                                            <?php endif; ?>
+                                        </div>
+                                    <?php endforeach; ?>
+                                </div>
+
+                                <!-- DESKTOP -->
+                                <div class="d-none d-md-block table-responsive">
+                                    <table class="table table-hover align-middle mb-0">
+                                        <thead>
+                                            <tr>
+                                                <th style="width:60px">Colore</th>
+                                                <th>Nome</th>
+                                                <th>Codice</th>
+                                                <th class="text-center">Richiede linea</th>
+                                                <th class="text-center">Ordine</th>
+                                                <th class="text-center">Attrezzature</th>
+                                                <th class="text-center">Stato</th>
+                                                <?php if ($canManage): ?><th class="text-center" style="width:120px">Azioni</th><?php endif; ?>
+                                            </tr>
+                                        </thead>
+                                        <tbody>
+                                            <?php foreach ($categories as $category): ?>
+                                                <tr data-id="<?= (int)$category['id'] ?>"
+                                                    data-json="<?= mnt_h(json_encode($category, JSON_UNESCAPED_UNICODE)) ?>">
+                                                    <td><span class="mnt-cat-dot" style="width:22px;height:22px;background: <?= mnt_h($category['color']) ?>"></span></td>
+                                                    <td class="fw-semibold" style="color:var(--mnt-heading)"><?= mnt_h($category['name']) ?></td>
+                                                    <td class="small text-muted"><?= mnt_h($category['code'] ?: '—') ?></td>
+                                                    <td class="text-center">
+                                                        <?= (int)$category['requires_line'] === 1
+                                                            ? '<span class="mnt-badge mnt-badge-soft">Richiede linea</span>'
+                                                            : '<span class="text-muted">—</span>' ?>
+                                                    </td>
+                                                    <td class="text-center small"><?= (int)$category['sort_order'] ?></td>
+                                                    <td class="text-center"><?= (int)$category['equipment_count'] ?></td>
+                                                    <td class="text-center">
+                                                        <span class="mnt-badge <?= (int)$category['is_active'] === 1 ? 'mnt-badge-ok' : 'mnt-badge-none' ?>">
+                                                            <?= (int)$category['is_active'] === 1 ? 'Attiva' : 'Disattivata' ?>
+                                                        </span>
+                                                    </td>
+                                                    <?php if ($canManage): ?>
+                                                        <td class="text-center">
+                                                            <div class="d-inline-flex gap-1">
+                                                                <button class="btn-action btn-action-edit btn-edit" title="Modifica"><i class="fa-solid fa-pen"></i></button>
+                                                                <button class="btn-action btn-action-delete btn-delete" title="Elimina"
+                                                                    data-name="<?= mnt_h($category['name']) ?>"
+                                                                    data-count="<?= (int)$category['equipment_count'] ?>">
+                                                                    <i class="fa-solid fa-trash"></i>
+                                                                </button>
+                                                            </div>
+                                                        </td>
+                                                    <?php endif; ?>
+                                                </tr>
+                                            <?php endforeach; ?>
+                                        </tbody>
+                                    </table>
+                                </div>
+                            </div>
+                        <?php endif; ?>
+                    </div>
+                </div>
+
+            </div>
+        </div>
+        <?php include(__DIR__ . '/../../include/footer.php'); ?>
+    </div>
+
+    <?php if ($canManage): ?>
+        <div class="modal fade" id="categoryModal" tabindex="-1" aria-hidden="true">
+            <div class="modal-dialog modal-dialog-centered modal-fullscreen-sm-down">
+                <div class="modal-content">
+                    <div class="modal-header">
+                        <h5 class="modal-title" id="categoryModalTitle">Nuova categoria</h5>
+                        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Chiudi"></button>
+                    </div>
+                    <form id="categoryForm">
+                        <div class="modal-body">
+                            <input type="hidden" name="id" id="catId" value="">
+
+                            <div class="mb-3">
+                                <label class="form-label fw-semibold">Nome <span class="text-danger">*</span></label>
+                                <input type="text" class="form-control" name="name" id="catName" maxlength="150" required>
+                            </div>
+
+                            <div class="row g-3">
+                                <div class="col-6">
+                                    <label class="form-label fw-semibold">Codice</label>
+                                    <input type="text" class="form-control" name="code" id="catCode" maxlength="50">
+                                </div>
+                                <div class="col-6">
+                                    <label class="form-label fw-semibold">Ordine</label>
+                                    <input type="number" class="form-control" name="sort_order" id="catSort" min="0" max="9999" value="999">
+                                </div>
+                                <div class="col-12">
+                                    <label class="form-label fw-semibold">Colore</label>
+                                    <input type="color" class="form-control form-control-color" name="color" id="catColor" value="#6c757d">
+                                </div>
+                                <div class="col-12">
+                                    <label class="form-label fw-semibold">Descrizione</label>
+                                    <textarea class="form-control" name="description" id="catDescription" rows="2"></textarea>
+                                </div>
+                            </div>
+
+                            <div class="form-check mt-3">
+                                <input class="form-check-input" type="checkbox" name="requires_line" id="catRequiresLine" value="1">
+                                <label class="form-check-label fw-semibold" for="catRequiresLine">
+                                    Richiede una linea di produzione
+                                </label>
+                                <div class="form-text">Le attrezzature di questa categoria devono indicare la linea.</div>
+                            </div>
+
+                            <div class="form-check mt-2">
+                                <input class="form-check-input" type="checkbox" name="is_active" id="catActive" value="1" checked>
+                                <label class="form-check-label fw-semibold" for="catActive">Attiva</label>
+                            </div>
+                        </div>
+                        <div class="modal-footer">
+                            <button type="button" class="btn btn-light" data-bs-dismiss="modal">Annulla</button>
+                            <button type="submit" class="btn btn-mnt-primary">Salva</button>
+                        </div>
+                    </form>
+                </div>
+            </div>
+        </div>
+    <?php endif; ?>
+
+    <?php include(__DIR__ . '/../../jsinclude.php'); ?>
+    <script>
+        $(function () {
+            <?php if ($canManage): ?>
+            function openModal(data) {
+                const isEdit = !!data;
+                $('#categoryModalTitle').text(isEdit ? 'Modifica categoria' : 'Nuova categoria');
+                $('#catId').val(isEdit ? data.id : '');
+                $('#catName').val(isEdit ? data.name : '');
+                $('#catCode').val(isEdit ? (data.code || '') : '');
+                $('#catSort').val(isEdit ? data.sort_order : 999);
+                $('#catColor').val(isEdit ? data.color : '#6c757d');
+                $('#catDescription').val(isEdit ? (data.description || '') : '');
+                $('#catRequiresLine').prop('checked', isEdit ? Number(data.requires_line) === 1 : false);
+                $('#catActive').prop('checked', isEdit ? Number(data.is_active) === 1 : true);
+                new bootstrap.Modal('#categoryModal').show();
+            }
+
+            $('#btnAddCategory').on('click', () => openModal(null));
+
+            $('#categoryList').on('click', '.btn-edit', function () {
+                openModal($(this).closest('[data-json]').data('json'));
+            });
+
+            $('#categoryList').on('click', '.btn-delete', function () {
+                const $btn = $(this);
+                const count = parseInt($btn.data('count') || 0, 10);
+                const id = $btn.closest('[data-id]').data('id');
+
+                if (count > 0) {
+                    Swal.fire({
+                        icon: 'warning', title: 'Impossibile eliminare',
+                        text: `La categoria "${$btn.data('name')}" è usata da ${count} attrezzature.`
+                    });
+                    return;
+                }
+
+                Swal.fire({
+                    title: `Eliminare "${$btn.data('name')}"?`, icon: 'warning', showCancelButton: true,
+                    confirmButtonText: 'Elimina', cancelButtonText: 'Annulla', confirmButtonColor: '#dc3545'
+                }).then(r => {
+                    if (!r.isConfirmed) return;
+                    $.post('manutenzioni/ajax/delete_category.php', { id: id })
+                        .done(res => res.success ? location.reload() : Swal.fire({ icon: 'error', title: 'Errore', text: res.message }));
+                });
+            });
+
+            $('#categoryForm').on('submit', function (e) {
+                e.preventDefault();
+                if (!$('#catName').val().trim()) { Swal.fire({ icon: 'warning', title: 'Nome obbligatorio' }); return; }
+
+                $.post('manutenzioni/ajax/save_category.php', $(this).serialize())
+                    .done(res => res.success ? location.reload() : Swal.fire({ icon: 'error', title: 'Errore', text: res.message }))
+                    .fail(() => Swal.fire({ icon: 'error', title: 'Errore di rete' }));
+            });
+            <?php endif; ?>
+        });
+    </script>
+</body>
+
+</html>

public/userarea/manutenzioni/cron/send_notifications.php

@@ -0,0 +1,196 @@
+<?php
+
+/**
+ * Manutenzioni — email notifications
+ * Run daily, e.g.: 0 7 * * * php /var/www/html/public/userarea/manutenzioni/cron/send_notifications.php
+ *
+ * Sends:
+ *   - "advance"  when next_due_date <= today + alert_days
+ *   - "overdue"  when next_due_date < today
+ *
+ * Recipients are the assignee and the supervisor of the maintenance
+ * (employees.auth_user_id -> auth_users.email). Deduplicated per
+ * maintenance + email + type + day by maint_notifications.
+ */
+
+require_once __DIR__ . '/../../class/db-functions.php';
+require_once __DIR__ . '/../include/functions.php';
+require_once __DIR__ . '/../../../../vendor/autoload.php';
+
+use Dotenv\Dotenv;
+use PHPMailer\PHPMailer\PHPMailer;
+
+$dotenv = Dotenv::createImmutable(__DIR__ . '/../../../../');
+$dotenv->safeLoad();
+
+$pdo = mnt_pdo();
+
+$today = date('Y-m-d');
+$appUrl = rtrim($_ENV['APP_URL'] ?? 'http://localhost:8001', '/');
+
+/**
+ * --dry-run (or MNT_MAIL_DRYRUN=1) works out the queue and prints it without
+ * sending anything and without writing to maint_notifications, so a run leaves
+ * no trace and can be repeated. Useful before a change to see what tonight
+ * would deliver, and it is what the test suite drives.
+ *
+ * One line per queued message, tab separated:
+ *   QUEUE <type> <email> <maintenance_id> <label>
+ */
+$dryRun = in_array('--dry-run', $argv ?? [], true) || !empty($_ENV['MNT_MAIL_DRYRUN']);
+if ($dryRun) {
+    echo "DRY-RUN — nothing is sent, nothing is recorded\n";
+}
+
+$sent = 0;
+$skipped = 0;
+$errors = 0;
+
+// Only active maintenances of active equipment, with a real due date
+$stmt = $pdo->prepare("
+    SELECT m.id, m.code, m.title, m.next_due_date, m.alert_days, m.is_critical,
+           e.id AS equipment_id, e.name AS equipment_name,
+           m.assignee_employee_id, m.supervisor_employee_id
+    FROM maint_maintenances m
+    INNER JOIN inv_equipment e ON e.id = m.equipment_id
+    WHERE m.is_active = 1
+      AND e.status = 'active'
+      AND m.next_due_date IS NOT NULL
+      AND m.next_due_date <= DATE_ADD(?, INTERVAL m.alert_days DAY)
+");
+$stmt->execute([$today]);
+$maintenances = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+if (!$maintenances) {
+    echo date('Y-m-d H:i:s') . " — Nessuna manutenzione da notificare.\n";
+    exit(0);
+}
+
+$getRecipient = $pdo->prepare("
+    SELECT e.id AS employee_id, e.first_name, e.last_name, u.email
+    FROM employees e
+    INNER JOIN auth_users u ON u.id = e.auth_user_id
+    WHERE e.id = ?
+      AND e.auth_user_id IS NOT NULL
+      AND u.email IS NOT NULL
+      AND u.email <> ''
+");
+
+$checkSent = $pdo->prepare("
+    SELECT COUNT(*) FROM maint_notifications
+    WHERE maintenance_id = ? AND email = ? AND type = ? AND sent_date = ?
+");
+
+$insertNotification = $pdo->prepare("
+    INSERT INTO maint_notifications (maintenance_id, employee_id, email, type, sent_date)
+    VALUES (?, ?, ?, ?, ?)
+");
+
+// mnt_mail_body() and mnt_notification_mail() live in include/functions.php,
+// so that the preview renders the very same markup this cron sends.
+
+foreach ($maintenances as $maintenance) {
+    $isOverdue = $maintenance['next_due_date'] < $today;
+    $type = $isOverdue ? 'overdue' : 'advance';
+    $daysLeft = (int)((strtotime($maintenance['next_due_date']) - strtotime($today)) / 86400);
+
+    // Assignee + supervisor, de-duplicated by employee id
+    $recipients = [];
+    foreach ([$maintenance['assignee_employee_id'], $maintenance['supervisor_employee_id']] as $employeeId) {
+        if (!$employeeId) {
+            continue;
+        }
+
+        $getRecipient->execute([(int)$employeeId]);
+        $recipient = $getRecipient->fetch(PDO::FETCH_ASSOC);
+
+        if ($recipient) {
+            $recipients[(int)$recipient['employee_id']] = $recipient;
+        }
+    }
+
+    if (!$recipients) {
+        $skipped++;
+        continue;
+    }
+
+    $label = ($maintenance['code'] ? $maintenance['code'] . ' — ' : '') . $maintenance['title'];
+    $detailUrl = $appUrl . '/userarea/manutenzioni/equipment.php?id=' . (int)$maintenance['equipment_id'];
+
+    foreach ($recipients as $recipient) {
+        $checkSent->execute([$maintenance['id'], $recipient['email'], $type, $today]);
+        if ((int)$checkSent->fetchColumn() > 0) {
+            $skipped++;
+            continue;
+        }
+
+        if ($dryRun) {
+            printf("QUEUE\t%s\t%s\t%d\t%s\n", $type, $recipient['email'], (int)$maintenance['id'], $label);
+            $sent++;
+            continue;
+        }
+
+        try {
+            $mail = new PHPMailer(true);
+
+            if (($_ENV['MAIL_MAILER'] ?? 'mail') === 'smtp') {
+                $mail->isSMTP();
+                $mail->Host = $_ENV['MAIL_HOST'] ?? 'localhost';
+                $mail->Port = (int)($_ENV['MAIL_PORT'] ?? 587);
+
+                if (!empty($_ENV['MAIL_USERNAME']) && $_ENV['MAIL_USERNAME'] !== 'null') {
+                    $mail->SMTPAuth = true;
+                    $mail->Username = $_ENV['MAIL_USERNAME'];
+                    $mail->Password = $_ENV['MAIL_PASSWORD'] ?? '';
+                }
+
+                $encryption = $_ENV['MAIL_ENCRYPTION'] ?? '';
+                if ($encryption && $encryption !== 'null') {
+                    $mail->SMTPSecure = $encryption;
+                }
+            }
+
+            $mail->CharSet = 'UTF-8';
+            $mail->isHTML(true);
+            $mail->setFrom(
+                $_ENV['MAIL_FROM_ADDRESS'] ?? 'noreply@zibogomma.it',
+                $_ENV['MAIL_FROM_NAME'] ?? 'Manutenzioni ZIBOGOMMA'
+            );
+            $mail->addAddress($recipient['email'], trim($recipient['first_name'] . ' ' . $recipient['last_name']));
+
+            $composed = mnt_notification_mail($maintenance, $label, $daysLeft, $detailUrl, $today);
+            $mail->Subject = $composed['subject'];
+            $mail->Body = $composed['body'];
+
+            $mail->send();
+
+            $insertNotification->execute([
+                $maintenance['id'],
+                (int)$recipient['employee_id'],
+                $recipient['email'],
+                $type,
+                $today,
+            ]);
+
+            mnt_log(
+                $pdo,
+                'notification_sent',
+                (int)$maintenance['equipment_id'],
+                (int)$maintenance['id'],
+                null,
+                null,
+                null,
+                $type . ' → ' . $recipient['email']
+            );
+
+            $sent++;
+        } catch (Throwable $e) {
+            $errors++;
+            echo date('Y-m-d H:i:s') . ' — Errore invio a ' . $recipient['email'] . ': ' . $e->getMessage() . "\n";
+        }
+    }
+}
+
+echo date('Y-m-d H:i:s')
+    . ($dryRun ? " — In coda: $sent" : " — Inviate: $sent")
+    . ", saltate: $skipped, errori: $errors\n";

public/userarea/manutenzioni/equipment.php

@@ -0,0 +1,560 @@
+<?php include(__DIR__ . '/../include/headscript.php'); ?>
+<?php
+require_once __DIR__ . '/include/functions.php';
+
+$pdo = mnt_pdo();
+
+if (!userCan('maintenance.equipment.view')) {
+    http_response_code(403);
+    exit('Permesso negato.');
+}
+
+$canManage = userCan('maintenance.manage');
+$canSeeMaintenances = userCan('maintenance.maintenances.view');
+
+$equipmentId = isset($_GET['id']) && is_numeric($_GET['id']) ? (int)$_GET['id'] : 0;
+
+$stmt = $pdo->prepare("
+    SELECT e.*,
+        c.name AS category_name, c.color AS category_color,
+        pl.name AS line_name, pl.line_number,
+        d.name AS department_name,
+        cf.stored_name AS cover_stored
+    FROM inv_equipment e
+    LEFT JOIN inv_categories c ON c.id = e.category_id
+    LEFT JOIN production_lines pl ON pl.id = e.line_id
+    LEFT JOIN departments d ON d.id = e.department_id
+    LEFT JOIN inv_equipment_files cf ON cf.id = e.cover_file_id
+    WHERE e.id = ?
+");
+$stmt->execute([$equipmentId]);
+$equipment = $stmt->fetch(PDO::FETCH_ASSOC);
+
+if (!$equipment) {
+    http_response_code(404);
+    exit('Attrezzatura non trovata.');
+}
+
+// Photos and documents
+$stmt = $pdo->prepare("SELECT * FROM inv_equipment_files WHERE equipment_id = ? ORDER BY created_at ASC");
+$stmt->execute([$equipmentId]);
+$files = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+$photos = array_values(array_filter($files, fn($f) => $f['kind'] === 'photo'));
+$documents = array_values(array_filter($files, fn($f) => $f['kind'] !== 'photo'));
+
+// Maintenances
+$maintenances = [];
+$interventionsByMaintenance = [];
+
+if ($canSeeMaintenances) {
+    $stmt = $pdo->prepare("
+        SELECT m.*,
+            CONCAT(a.first_name, ' ', a.last_name) AS assignee_name,
+            CONCAT(s.first_name, ' ', s.last_name) AS supervisor_name,
+            sup.supplier_name,
+            (SELECT COUNT(*) FROM maint_interventions i WHERE i.maintenance_id = m.id) AS intervention_count,
+            (SELECT COUNT(*) FROM maint_maintenance_files f WHERE f.maintenance_id = m.id) AS file_count
+        FROM maint_maintenances m
+        LEFT JOIN employees a ON a.id = m.assignee_employee_id
+        LEFT JOIN employees s ON s.id = m.supervisor_employee_id
+        LEFT JOIN suppliers sup ON sup.idsupplier = m.supplier_id
+        WHERE m.equipment_id = ?
+        ORDER BY m.is_active DESC, m.code ASC, m.title ASC
+    ");
+    $stmt->execute([$equipmentId]);
+    $maintenances = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+    $stmt = $pdo->prepare("
+        SELECT i.*,
+            CONCAT(e.first_name, ' ', e.last_name) AS operator_full_name,
+            sup.supplier_name,
+            (SELECT COUNT(*) FROM maint_intervention_files f WHERE f.intervention_id = i.id) AS file_count
+        FROM maint_interventions i
+        LEFT JOIN employees e ON e.id = i.operator_employee_id
+        LEFT JOIN suppliers sup ON sup.idsupplier = i.supplier_id
+        WHERE i.equipment_id = ?
+        ORDER BY i.performed_at DESC, i.id DESC
+    ");
+    $stmt->execute([$equipmentId]);
+
+    foreach ($stmt->fetchAll(PDO::FETCH_ASSOC) as $intervention) {
+        $interventionsByMaintenance[(int)$intervention['maintenance_id']][] = $intervention;
+    }
+}
+
+$formData = mnt_form_data($pdo);
+$statuses = mnt_equipment_statuses();
+$statusLabels = mnt_lookup($pdo, 'maint_status', ['planned' => 'Pianificato', 'in_progress' => 'In corso', 'completed' => 'Completato']);
+$resultLabels = mnt_lookup($pdo, 'maint_result', []);
+$typeLabels = mnt_intervention_types();
+$executionLabels = mnt_execution_types();
+
+$MNT_TITLE = $equipment['name'];
+?>
+<!doctype html>
+<html lang="it">
+
+<head>
+    <?php include __DIR__ . '/include/page_head.php'; ?>
+</head>
+
+<body>
+    <?php include __DIR__ . '/include/wrapper_open.php'; ?>
+        <?php include(__DIR__ . '/../include/navbar.php'); ?>
+        <?php include(__DIR__ . '/../include/topbar.php'); ?>
+
+        <div class="page-wrapper">
+            <div class="page-content">
+
+                <nav aria-label="breadcrumb" class="mb-3">
+                    <ol class="breadcrumb" style="background:transparent;padding:0;margin:0;font-size:0.85rem">
+                        <li class="breadcrumb-item"><a href="manutenzioni/index.php">Registro attrezzature</a></li>
+                        <li class="breadcrumb-item active" aria-current="page"><?= mnt_h($equipment['name']) ?></li>
+                    </ol>
+                </nav>
+
+                <div class="card mnt-card mb-3">
+                    <div class="card-header d-flex align-items-center justify-content-between flex-wrap gap-2">
+                        <h5 class="d-flex align-items-center gap-2 flex-wrap">
+                            <span class="mnt-cat-dot" style="background: <?= mnt_h($equipment['category_color'] ?? '#adb5bd') ?>"></span>
+                            <?= mnt_h($equipment['name']) ?>
+                            <span class="mnt-badge mnt-badge-status-<?= mnt_h($equipment['status']) ?>">
+                                <?= mnt_h($statuses[$equipment['status']] ?? $equipment['status']) ?>
+                            </span>
+                        </h5>
+                        <div class="header-actions d-flex gap-2 flex-wrap">
+                            <a href="manutenzioni/print.php?id=<?= (int)$equipment['id'] ?>" target="_blank"
+                                class="btn btn-mnt-outline d-inline-flex align-items-center gap-2">
+                                <i class="fa-solid fa-print"></i><span>Scheda PDF</span>
+                            </a>
+                            <?php if ($canManage): ?>
+                                <button class="btn btn-mnt-outline d-inline-flex align-items-center gap-2" id="btnEditEquipment">
+                                    <i class="fa-solid fa-pen"></i><span>Modifica</span>
+                                </button>
+                                <button class="btn btn-mnt-primary d-inline-flex align-items-center gap-2" id="btnAddMaintenance">
+                                    <i class="fa-solid fa-plus"></i><span>Nuova manutenzione</span>
+                                </button>
+                            <?php endif; ?>
+                        </div>
+                    </div>
+                </div>
+
+                <div class="row g-3">
+                    <!-- ------------------------------------------------ left: data -->
+                    <div class="col-12 col-lg-4">
+                        <div class="card mnt-card mb-3">
+                            <div class="card-header"><h5><i class="fa-solid fa-circle-info me-2"></i>Dati</h5></div>
+                            <div class="card-body">
+                                <?php if (!empty($equipment['cover_stored'])): ?>
+                                    <img src="manutenzioni/ajax/download_file.php?scope=equipment&id=<?= (int)$equipment['cover_file_id'] ?>"
+                                        alt="" class="w-100 mb-3" style="border-radius:.5rem;object-fit:cover;max-height:220px">
+                                <?php endif; ?>
+
+                                <dl class="mb-0">
+                                    <div class="mnt-kv"><dt>Categoria</dt><dd><?= mnt_h($equipment['category_name'] ?? '—') ?></dd></div>
+                                    <?php if ($equipment['line_name']): ?>
+                                        <div class="mnt-kv"><dt>Linea</dt><dd>Linea <?= (int)$equipment['line_number'] ?> — <?= mnt_h($equipment['line_name']) ?></dd></div>
+                                    <?php endif; ?>
+                                    <div class="mnt-kv"><dt>Matricola</dt><dd><?= mnt_h($equipment['registration_number'] ?: '—') ?></dd></div>
+                                    <div class="mnt-kv"><dt>Numero di serie</dt><dd><?= mnt_h($equipment['serial_number'] ?: '—') ?></dd></div>
+                                    <div class="mnt-kv"><dt>Lotto / partita</dt><dd><?= mnt_h($equipment['batch_lot'] ?: '—') ?></dd></div>
+                                    <div class="mnt-kv"><dt>Costruttore</dt><dd><?= mnt_h($equipment['manufacturer'] ?: '—') ?></dd></div>
+                                    <div class="mnt-kv"><dt>Tipo</dt><dd><?= mnt_h($equipment['tool_type'] ?: '—') ?></dd></div>
+                                    <div class="mnt-kv"><dt>Acquisto</dt><dd><?= mnt_format_date($equipment['purchase_date']) ?></dd></div>
+                                    <div class="mnt-kv"><dt>Messa in servizio</dt><dd><?= mnt_format_date($equipment['commissioning_date']) ?></dd></div>
+                                    <div class="mnt-kv"><dt>Reparto</dt><dd><?= mnt_h($equipment['department_name'] ?: '—') ?></dd></div>
+                                    <div class="mnt-kv"><dt>Ubicazione</dt><dd><?= mnt_h($equipment['location'] ?: '—') ?></dd></div>
+                                </dl>
+
+                                <?php if ($equipment['description']): ?>
+                                    <div class="mnt-section-title mt-3">Descrizione</div>
+                                    <div class="small"><?= nl2br(mnt_h($equipment['description'])) ?></div>
+                                <?php endif; ?>
+
+                                <?php if ($equipment['notes']): ?>
+                                    <div class="mnt-section-title mt-3">Note</div>
+                                    <div class="small"><?= nl2br(mnt_h($equipment['notes'])) ?></div>
+                                <?php endif; ?>
+                            </div>
+                        </div>
+
+                        <div class="card mnt-card mb-3">
+                            <div class="card-header d-flex align-items-center justify-content-between">
+                                <h5><i class="fa-solid fa-images me-2"></i>Foto</h5>
+                                <?php if ($canManage): ?>
+                                    <button class="btn btn-mnt-outline btn-sm" id="btnAddPhotos">
+                                        <i class="fa-solid fa-plus"></i>
+                                    </button>
+                                    <input type="file" id="photoInput" accept="image/*" multiple hidden>
+                                <?php endif; ?>
+                            </div>
+                            <div class="card-body">
+                                <?php if (!$photos): ?>
+                                    <p class="text-muted small mb-0">Nessuna foto caricata.</p>
+                                <?php else: ?>
+                                    <div class="mnt-photo-grid">
+                                        <?php foreach ($photos as $photo): ?>
+                                            <div class="mnt-photo-item <?= (int)$equipment['cover_file_id'] === (int)$photo['id'] ? 'is-cover' : '' ?>">
+                                                <a href="manutenzioni/ajax/download_file.php?scope=equipment&id=<?= (int)$photo['id'] ?>" target="_blank">
+                                                    <img src="manutenzioni/ajax/download_file.php?scope=equipment&id=<?= (int)$photo['id'] ?>"
+                                                        alt="<?= mnt_h($photo['original_name']) ?>">
+                                                </a>
+                                                <?php if ($canManage): ?>
+                                                    <div class="photo-tools">
+                                                        <button class="btn-set-cover" data-id="<?= (int)$photo['id'] ?>" title="Usa come copertina">
+                                                            <i class="fa-solid fa-star"></i>
+                                                        </button>
+                                                        <button class="btn-del-photo" data-id="<?= (int)$photo['id'] ?>" title="Elimina">
+                                                            <i class="fa-solid fa-trash"></i>
+                                                        </button>
+                                                    </div>
+                                                <?php endif; ?>
+                                            </div>
+                                        <?php endforeach; ?>
+                                    </div>
+                                <?php endif; ?>
+                            </div>
+                        </div>
+
+                        <div class="card mnt-card">
+                            <div class="card-header d-flex align-items-center justify-content-between">
+                                <h5><i class="fa-solid fa-folder-open me-2"></i>Documenti</h5>
+                                <?php if ($canManage): ?>
+                                    <button class="btn btn-mnt-outline btn-sm" id="btnAddDocs">
+                                        <i class="fa-solid fa-plus"></i>
+                                    </button>
+                                    <input type="file" id="docInput" multiple hidden>
+                                <?php endif; ?>
+                            </div>
+                            <div class="card-body">
+                                <?php if (!$documents): ?>
+                                    <p class="text-muted small mb-0">Nessun documento caricato.</p>
+                                <?php else: ?>
+                                    <?php foreach ($documents as $document): ?>
+                                        <div class="mnt-file-row">
+                                            <i class="fa-solid fa-file text-muted"></i>
+                                            <a class="file-name" target="_blank"
+                                                href="manutenzioni/ajax/download_file.php?scope=equipment&id=<?= (int)$document['id'] ?>">
+                                                <?= mnt_h($document['original_name']) ?>
+                                            </a>
+                                            <?php if ($canManage): ?>
+                                                <button class="btn-action btn-action-delete btn-del-doc" data-id="<?= (int)$document['id'] ?>">
+                                                    <i class="fa-solid fa-trash"></i>
+                                                </button>
+                                            <?php endif; ?>
+                                        </div>
+                                    <?php endforeach; ?>
+                                <?php endif; ?>
+                            </div>
+                        </div>
+                    </div>
+
+                    <!-- --------------------------------------- right: maintenances -->
+                    <div class="col-12 col-lg-8">
+                        <div class="card mnt-card">
+                            <div class="card-header"><h5><i class="fa-solid fa-screwdriver-wrench me-2"></i>Manutenzioni</h5></div>
+                            <div class="card-body">
+                                <?php if (!$canSeeMaintenances): ?>
+                                    <p class="text-muted small mb-0">Non hai i permessi per vedere le manutenzioni.</p>
+                                <?php elseif (!$maintenances): ?>
+                                    <div class="empty-state">
+                                        <i class="fa-solid fa-screwdriver-wrench"></i>
+                                        <p>Nessuna manutenzione definita per questa attrezzatura.<br>
+                                            Un'attrezzatura senza manutenzioni è esclusa dalle pianificazioni.</p>
+                                    </div>
+                                <?php else: ?>
+                                    <div id="maintenanceList">
+                                        <?php foreach ($maintenances as $maintenance): ?>
+                                            <?php
+                                            $state = mnt_due_state($maintenance['next_due_date'], (int)$maintenance['alert_days']);
+                                            $badge = mnt_due_badge($state, $maintenance['frequency_unit']);
+                                            $interventions = $interventionsByMaintenance[(int)$maintenance['id']] ?? [];
+                                            ?>
+                                            <div class="mnt-item-card" data-id="<?= (int)$maintenance['id'] ?>"
+                                                style="--row-color: <?= $maintenance['is_critical'] ? '#dc3545' : 'var(--mnt-primary)' ?>;<?= (int)$maintenance['is_active'] === 0 ? 'opacity:.6' : '' ?>">
+                                                <div class="d-flex justify-content-between align-items-start gap-2 flex-wrap">
+                                                    <div class="flex-grow-1">
+                                                        <div class="ic-title">
+                                                            <?php if ($maintenance['code']): ?>
+                                                                <span class="mnt-badge mnt-badge-soft me-1"><?= mnt_h($maintenance['code']) ?></span>
+                                                            <?php endif; ?>
+                                                            <?= mnt_h($maintenance['title']) ?>
+                                                            <?php if ($maintenance['is_critical']): ?>
+                                                                <span class="mnt-badge mnt-badge-critical ms-1">Critica</span>
+                                                            <?php endif; ?>
+                                                            <?php if ((int)$maintenance['is_active'] === 0): ?>
+                                                                <span class="mnt-badge mnt-badge-none ms-1">Disattivata</span>
+                                                            <?php endif; ?>
+                                                        </div>
+                                                        <div class="ic-meta">
+                                                            <?= mnt_h($typeLabels[$maintenance['intervention_type']] ?? '') ?> ·
+                                                            <?= mnt_h($executionLabels[$maintenance['execution_type']] ?? '') ?>
+                                                            <?php if ($maintenance['supplier_name']): ?>
+                                                                (<?= mnt_h($maintenance['supplier_name']) ?>)
+                                                            <?php endif; ?>
+                                                            · <?= mnt_h(mnt_format_frequency(
+                                                                    $maintenance['frequency_value'] !== null ? (int)$maintenance['frequency_value'] : null,
+                                                                    $maintenance['frequency_unit'],
+                                                                    $maintenance['frequency_note']
+                                                                )) ?>
+                                                        </div>
+                                                        <div class="ic-meta">
+                                                            Ultimo: <strong><?= mnt_format_date($maintenance['last_done_date']) ?></strong> ·
+                                                            Prossimo: <strong><?= mnt_format_date($maintenance['next_due_date']) ?></strong>
+                                                            <span class="mnt-badge <?= $badge['class'] ?> ms-1"><?= $badge['label'] ?></span>
+                                                        </div>
+                                                        <?php if ($maintenance['assignee_name'] || $maintenance['supervisor_name']): ?>
+                                                            <div class="ic-meta">
+                                                                <?php if ($maintenance['assignee_name']): ?>
+                                                                    Incaricato: <strong><?= mnt_h($maintenance['assignee_name']) ?></strong>
+                                                                <?php endif; ?>
+                                                                <?php if ($maintenance['supervisor_name']): ?>
+                                                                    · Responsabile: <strong><?= mnt_h($maintenance['supervisor_name']) ?></strong>
+                                                                <?php endif; ?>
+                                                            </div>
+                                                        <?php endif; ?>
+                                                        <?php if ($maintenance['description']): ?>
+                                                            <div class="ic-meta"><?= nl2br(mnt_h($maintenance['description'])) ?></div>
+                                                        <?php endif; ?>
+                                                        <?php if ((int)$maintenance['file_count'] > 0): ?>
+                                                            <div class="ic-meta"><i class="fa-solid fa-paperclip"></i> <?= (int)$maintenance['file_count'] ?> istruzioni</div>
+                                                        <?php endif; ?>
+                                                    </div>
+
+                                                    <div class="d-flex gap-1 flex-shrink-0">
+                                                        <?php if ($canManage): ?>
+                                                            <button class="btn-action btn-action-done btn-register" title="Registra intervento">
+                                                                <i class="fa-solid fa-check"></i>
+                                                            </button>
+                                                            <button class="btn-action btn-action-edit btn-edit-maintenance" title="Modifica">
+                                                                <i class="fa-solid fa-pen"></i>
+                                                            </button>
+                                                            <button class="btn-action btn-action-delete btn-delete-maintenance"
+                                                                title="Elimina" data-title="<?= mnt_h($maintenance['title']) ?>"
+                                                                data-count="<?= (int)$maintenance['intervention_count'] ?>">
+                                                                <i class="fa-solid fa-trash"></i>
+                                                            </button>
+                                                        <?php endif; ?>
+                                                    </div>
+                                                </div>
+
+                                                <?php if ($interventions): ?>
+                                                    <div class="mt-3">
+                                                        <button class="btn btn-sm btn-light w-100 btn-toggle-history" type="button">
+                                                            <i class="fa-solid fa-clock-rotate-left me-1"></i>
+                                                            Storico interventi (<?= count($interventions) ?>)
+                                                        </button>
+                                                        <div class="mnt-timeline mt-3" style="display:none">
+                                                            <?php foreach ($interventions as $intervention): ?>
+                                                                <div class="mnt-timeline-item" data-intervention-id="<?= (int)$intervention['id'] ?>">
+                                                                    <div class="tl-date">
+                                                                        <?= mnt_format_date($intervention['performed_at']) ?>
+                                                                        · <?= mnt_h($statusLabels[$intervention['status']] ?? $intervention['status']) ?>
+                                                                        <?php if ($intervention['result']): ?>
+                                                                            · <?= mnt_h($resultLabels[$intervention['result']] ?? $intervention['result']) ?>
+                                                                        <?php endif; ?>
+                                                                    </div>
+                                                                    <div class="tl-body">
+                                                                        <?php
+                                                                        $operator = $intervention['operator_full_name'] ?: $intervention['operator_name'];
+                                                                        ?>
+                                                                        <?php if ($operator): ?>
+                                                                            <strong><?= mnt_h($operator) ?></strong>
+                                                                        <?php endif; ?>
+                                                                        <?php if ($intervention['supplier_name']): ?>
+                                                                            <span class="text-muted">(<?= mnt_h($intervention['supplier_name']) ?>)</span>
+                                                                        <?php endif; ?>
+                                                                        <?php if ($intervention['notes']): ?>
+                                                                            <div><?= nl2br(mnt_h($intervention['notes'])) ?></div>
+                                                                        <?php endif; ?>
+                                                                        <?php if ($intervention['materials']): ?>
+                                                                            <div class="small text-muted">Materiali: <?= mnt_h($intervention['materials']) ?></div>
+                                                                        <?php endif; ?>
+                                                                        <div class="d-flex align-items-center gap-2 mt-1 flex-wrap">
+                                                                            <?php if ($intervention['signature_path']): ?>
+                                                                                <img src="manutenzioni/ajax/download_file.php?scope=signature&id=<?= (int)$intervention['id'] ?>"
+                                                                                    alt="Firma" style="height:38px;border:1px solid #e6eef0;border-radius:.3rem;background:#fff">
+                                                                            <?php endif; ?>
+                                                                            <?php if ((int)$intervention['file_count'] > 0): ?>
+                                                                                <span class="small text-muted"><i class="fa-solid fa-paperclip"></i> <?= (int)$intervention['file_count'] ?></span>
+                                                                            <?php endif; ?>
+                                                                            <?php if ($canManage): ?>
+                                                                                <button class="btn-action btn-action-edit btn-edit-intervention" title="Modifica">
+                                                                                    <i class="fa-solid fa-pen"></i>
+                                                                                </button>
+                                                                                <button class="btn-action btn-action-delete btn-delete-intervention" title="Elimina">
+                                                                                    <i class="fa-solid fa-trash"></i>
+                                                                                </button>
+                                                                            <?php endif; ?>
+                                                                        </div>
+                                                                    </div>
+                                                                </div>
+                                                            <?php endforeach; ?>
+                                                        </div>
+                                                    </div>
+                                                <?php endif; ?>
+                                            </div>
+                                        <?php endforeach; ?>
+                                    </div>
+                                <?php endif; ?>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+
+            </div>
+        </div>
+        <?php include(__DIR__ . '/../include/footer.php'); ?>
+    </div>
+
+    <?php if ($canManage): ?>
+        <?php include __DIR__ . '/include/equipment_modal.php'; ?>
+        <?php include __DIR__ . '/include/maintenance_modal.php'; ?>
+        <?php include __DIR__ . '/include/intervention_modal.php'; ?>
+    <?php endif; ?>
+
+    <?php include(__DIR__ . '/../jsinclude.php'); ?>
+    <script>
+        $(function () {
+            const EQUIPMENT_ID = <?= (int)$equipment['id'] ?>;
+            const EQUIPMENT_NAME = <?= json_encode($equipment['name'], JSON_UNESCAPED_UNICODE) ?>;
+
+            $('#maintenanceList').on('click', '.btn-toggle-history', function () {
+                $(this).next('.mnt-timeline').slideToggle(150);
+            });
+
+            <?php if ($canManage): ?>
+            // ---------------------------------------------------- equipment
+            $('#btnEditEquipment').on('click', function () {
+                $.getJSON('manutenzioni/ajax/get_equipment.php', { id: EQUIPMENT_ID })
+                    .done(res => {
+                        if (res.success) { mntOpenEquipmentModal(res.equipment); }
+                        else { Swal.fire({ icon: 'error', title: 'Errore', text: res.message }); }
+                    });
+            });
+
+            function uploadEquipmentFiles(input, kind) {
+                if (!input.files.length) return;
+
+                const form = new FormData();
+                form.append('scope', 'equipment');
+                form.append('owner_id', EQUIPMENT_ID);
+                form.append('kind', kind);
+                Array.from(input.files).forEach(f => form.append('files[]', f));
+
+                $.ajax({
+                    url: 'manutenzioni/ajax/upload_file.php',
+                    method: 'POST', data: form, processData: false, contentType: false, dataType: 'json'
+                }).done(res => {
+                    if (res.success) { location.reload(); }
+                    else { Swal.fire({ icon: 'error', title: 'Errore', text: res.message }); }
+                }).fail(() => Swal.fire({ icon: 'error', title: 'Errore di rete' }));
+            }
+
+            $('#btnAddPhotos').on('click', () => $('#photoInput').click());
+            $('#photoInput').on('change', function () { uploadEquipmentFiles(this, 'photo'); });
+            $('#btnAddDocs').on('click', () => $('#docInput').click());
+            $('#docInput').on('change', function () { uploadEquipmentFiles(this, 'file'); });
+
+            $('.btn-set-cover').on('click', function () {
+                $.post('manutenzioni/ajax/set_cover.php', { file_id: $(this).data('id') })
+                    .done(res => res.success ? location.reload() : Swal.fire({ icon: 'error', title: 'Errore', text: res.message }));
+            });
+
+            $('.btn-del-photo, .btn-del-doc').on('click', function () {
+                const id = $(this).data('id');
+                Swal.fire({
+                    title: 'Eliminare il file?', icon: 'warning', showCancelButton: true,
+                    confirmButtonText: 'Elimina', cancelButtonText: 'Annulla', confirmButtonColor: '#dc3545'
+                }).then(r => {
+                    if (!r.isConfirmed) return;
+                    $.post('manutenzioni/ajax/delete_file.php', { scope: 'equipment', id: id })
+                        .done(res => res.success ? location.reload() : Swal.fire({ icon: 'error', title: 'Errore', text: res.message }));
+                });
+            });
+
+            // -------------------------------------------------- maintenance
+            $('#btnAddMaintenance').on('click', function () {
+                mntOpenMaintenanceModal(null, EQUIPMENT_ID);
+            });
+
+            $('#maintenanceList').on('click', '.btn-edit-maintenance', function () {
+                const id = $(this).closest('[data-id]').data('id');
+                $.getJSON('manutenzioni/ajax/get_maintenance.php', { id: id })
+                    .done(res => {
+                        if (!res.success) { Swal.fire({ icon: 'error', title: 'Errore', text: res.message }); return; }
+                        const data = res.maintenance;
+                        data.files = res.files;
+                        mntOpenMaintenanceModal(data, EQUIPMENT_ID);
+                    });
+            });
+
+            $('#maintenanceList').on('click', '.btn-delete-maintenance', function () {
+                const $btn = $(this);
+                const id = $btn.closest('[data-id]').data('id');
+                const count = parseInt($btn.data('count') || 0, 10);
+
+                Swal.fire({
+                    title: `Eliminare "${$btn.data('title')}"?`,
+                    html: count > 0 ? `<p>Verranno eliminati anche <strong>${count}</strong> interventi registrati.</p>` : '',
+                    icon: 'warning', showCancelButton: true,
+                    confirmButtonText: 'Elimina', cancelButtonText: 'Annulla', confirmButtonColor: '#dc3545'
+                }).then(r => {
+                    if (!r.isConfirmed) return;
+                    $.post('manutenzioni/ajax/delete_maintenance.php', { id: id })
+                        .done(res => res.success ? location.reload() : Swal.fire({ icon: 'error', title: 'Errore', text: res.message }));
+                });
+            });
+
+            // ------------------------------------------------- interventions
+            $('#maintenanceList').on('click', '.btn-register', function () {
+                const id = $(this).closest('[data-id]').data('id');
+                $.getJSON('manutenzioni/ajax/get_maintenance.php', { id: id })
+                    .done(res => {
+                        if (!res.success) { Swal.fire({ icon: 'error', title: 'Errore', text: res.message }); return; }
+                        mntOpenInterventionModal(null, {
+                            id: res.maintenance.id,
+                            title: res.maintenance.title,
+                            equipment_name: EQUIPMENT_NAME,
+                            supplier_id: res.maintenance.supplier_id
+                        });
+                    });
+            });
+
+            $('#maintenanceList').on('click', '.btn-edit-intervention', function () {
+                const interventionId = $(this).closest('[data-intervention-id]').data('intervention-id');
+                const maintenanceId = $(this).closest('[data-id]').data('id');
+
+                $.getJSON('manutenzioni/ajax/get_interventions.php', { id: interventionId })
+                    .done(res => {
+                        if (!res.success) { Swal.fire({ icon: 'error', title: 'Errore', text: res.message }); return; }
+                        const data = res.intervention;
+                        data.files = res.files;
+                        mntOpenInterventionModal(data, {
+                            id: maintenanceId,
+                            title: '',
+                            equipment_name: EQUIPMENT_NAME
+                        });
+                    });
+            });
+
+            $('#maintenanceList').on('click', '.btn-delete-intervention', function () {
+                const interventionId = $(this).closest('[data-intervention-id]').data('intervention-id');
+                Swal.fire({
+                    title: 'Eliminare l\'intervento?',
+                    text: 'La data della prossima manutenzione verrà ricalcolata.',
+                    icon: 'warning', showCancelButton: true,
+                    confirmButtonText: 'Elimina', cancelButtonText: 'Annulla', confirmButtonColor: '#dc3545'
+                }).then(r => {
+                    if (!r.isConfirmed) return;
+                    $.post('manutenzioni/ajax/delete_intervention.php', { id: interventionId })
+                        .done(res => res.success ? location.reload() : Swal.fire({ icon: 'error', title: 'Errore', text: res.message }));
+                });
+            });
+            <?php endif; ?>
+        });
+    </script>
+</body>
+
+</html>

public/userarea/manutenzioni/include/equipment_modal.php

@@ -0,0 +1,190 @@
+<?php
+
+/**
+ * Create/edit modal for a registry item.
+ * Expects $formData (mnt_form_data) in scope. Defines mntOpenEquipmentModal(data).
+ */
+
+$statuses = $statuses ?? mnt_equipment_statuses();
+?>
+<div class="modal fade" id="equipmentModal" tabindex="-1" aria-hidden="true">
+    <div class="modal-dialog modal-lg modal-dialog-centered modal-fullscreen-sm-down">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title" id="equipmentModalTitle">Nuova attrezzatura</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Chiudi"></button>
+            </div>
+            <form id="equipmentForm">
+                <div class="modal-body">
+                    <input type="hidden" name="id" id="eqId" value="">
+
+                    <div class="row g-3">
+                        <div class="col-12">
+                            <label class="form-label fw-semibold">Nome <span class="text-danger">*</span></label>
+                            <input type="text" class="form-control" name="name" id="eqName" maxlength="100" required>
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Categoria <span class="text-danger">*</span></label>
+                            <select class="form-select" name="category_id" id="eqCategory" required>
+                                <option value="">— seleziona —</option>
+                                <?php foreach ($formData['categories'] as $category): ?>
+                                    <option value="<?= (int)$category['id'] ?>" data-requires-line="<?= (int)$category['requires_line'] ?>">
+                                        <?= mnt_h($category['name']) ?>
+                                    </option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+
+                        <div class="col-12 col-md-6" id="eqLineWrap" style="display:none">
+                            <label class="form-label fw-semibold">Linea di produzione <span class="text-danger">*</span></label>
+                            <select class="form-select" name="line_id" id="eqLine">
+                                <option value="">— seleziona —</option>
+                                <?php foreach ($formData['lines'] as $line): ?>
+                                    <option value="<?= (int)$line['id'] ?>">
+                                        Linea <?= (int)$line['line_number'] ?> — <?= mnt_h($line['name']) ?>
+                                    </option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Matricola</label>
+                            <input type="text" class="form-control" name="registration_number" id="eqRegistration" maxlength="100">
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Numero di serie</label>
+                            <input type="text" class="form-control" name="serial_number" id="eqSerial" maxlength="100">
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Lotto / partita</label>
+                            <input type="text" class="form-control" name="batch_lot" id="eqBatch" maxlength="100">
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Costruttore</label>
+                            <input type="text" class="form-control" name="manufacturer" id="eqManufacturer" maxlength="150">
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Data di acquisto</label>
+                            <input type="date" class="form-control" name="purchase_date" id="eqPurchase">
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Data di messa in servizio</label>
+                            <input type="date" class="form-control" name="commissioning_date" id="eqCommissioning">
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Tipo</label>
+                            <input type="text" class="form-control" name="tool_type" id="eqType" maxlength="50">
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Stato</label>
+                            <select class="form-select" name="status" id="eqStatus">
+                                <?php foreach ($statuses as $value => $label): ?>
+                                    <option value="<?= mnt_h($value) ?>"><?= mnt_h($label) ?></option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Reparto</label>
+                            <select class="form-select" name="department_id" id="eqDepartment">
+                                <option value="">—</option>
+                                <?php foreach ($formData['departments'] as $department): ?>
+                                    <option value="<?= (int)$department['id'] ?>"><?= mnt_h($department['name']) ?></option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Ubicazione</label>
+                            <input type="text" class="form-control" name="location" id="eqLocation" maxlength="255">
+                        </div>
+
+                        <div class="col-12">
+                            <label class="form-label fw-semibold">Descrizione</label>
+                            <textarea class="form-control" name="description" id="eqDescription" rows="2"></textarea>
+                        </div>
+
+                        <div class="col-12">
+                            <label class="form-label fw-semibold">Note</label>
+                            <textarea class="form-control" name="notes" id="eqNotes" rows="2"></textarea>
+                        </div>
+                    </div>
+                </div>
+                <div class="modal-footer">
+                    <button type="button" class="btn btn-light" data-bs-dismiss="modal">Annulla</button>
+                    <button type="submit" class="btn btn-mnt-primary">Salva</button>
+                </div>
+            </form>
+        </div>
+    </div>
+</div>
+
+<script>
+    // Shows the line picker only for categories flagged requires_line
+    function mntSyncLineVisibility() {
+        const requiresLine = $('#eqCategory option:selected').data('requires-line') == 1;
+        $('#eqLineWrap').toggle(requiresLine);
+        $('#eqLine').prop('required', requiresLine);
+        if (!requiresLine) { $('#eqLine').val(''); }
+    }
+
+    function mntOpenEquipmentModal(data) {
+        const isEdit = !!data;
+        $('#equipmentModalTitle').text(isEdit ? 'Modifica attrezzatura' : 'Nuova attrezzatura');
+
+        $('#eqId').val(isEdit ? data.id : '');
+        $('#eqName').val(isEdit ? (data.name || '') : '');
+        $('#eqCategory').val(isEdit && data.category_id ? String(data.category_id) : '');
+        $('#eqLine').val(isEdit && data.line_id ? String(data.line_id) : '');
+        $('#eqRegistration').val(isEdit ? (data.registration_number || '') : '');
+        $('#eqSerial').val(isEdit ? (data.serial_number || '') : '');
+        $('#eqBatch').val(isEdit ? (data.batch_lot || '') : '');
+        $('#eqManufacturer').val(isEdit ? (data.manufacturer || '') : '');
+        $('#eqPurchase').val(isEdit ? (data.purchase_date || '') : '');
+        $('#eqCommissioning').val(isEdit ? (data.commissioning_date || '') : '');
+        $('#eqType').val(isEdit ? (data.tool_type || '') : '');
+        $('#eqStatus').val(isEdit ? (data.status || 'active') : 'active');
+        $('#eqDepartment').val(isEdit && data.department_id ? String(data.department_id) : '');
+        $('#eqLocation').val(isEdit ? (data.location || '') : '');
+        $('#eqDescription').val(isEdit ? (data.description || '') : '');
+        $('#eqNotes').val(isEdit ? (data.notes || '') : '');
+
+        mntSyncLineVisibility();
+        new bootstrap.Modal('#equipmentModal').show();
+    }
+
+    $(function () {
+        $('#eqCategory').on('change', mntSyncLineVisibility);
+
+        $('#equipmentForm').on('submit', function (e) {
+            e.preventDefault();
+
+            const name = $('#eqName').val().trim();
+            if (!name) { Swal.fire({ icon: 'warning', title: 'Il nome è obbligatorio' }); return; }
+            if (!$('#eqCategory').val()) { Swal.fire({ icon: 'warning', title: 'Seleziona una categoria' }); return; }
+            if ($('#eqLineWrap').is(':visible') && !$('#eqLine').val()) {
+                Swal.fire({ icon: 'warning', title: 'Seleziona la linea di produzione' });
+                return;
+            }
+
+            $.post('manutenzioni/ajax/save_equipment.php', $(this).serialize())
+                .done(res => {
+                    if (res.success) {
+                        if (window.mntAfterEquipmentSave) { window.mntAfterEquipmentSave(res); }
+                        else { location.reload(); }
+                    } else {
+                        Swal.fire({ icon: 'error', title: 'Errore', text: res.message });
+                    }
+                })
+                .fail(() => Swal.fire({ icon: 'error', title: 'Errore di rete' }));
+        });
+    });
+</script>

public/userarea/manutenzioni/include/functions.php

@@ -0,0 +1,483 @@
+<?php
+
+/**
+ * Manutenzioni — shared helpers.
+ *
+ * Included by every page and ajax endpoint of the module. Assumes a PDO
+ * connection is available through DBHandlerSelect (class/db-functions.php).
+ */
+
+require_once __DIR__ . '/../../class/db-functions.php';
+
+if (!function_exists('mnt_pdo')) {
+    function mnt_pdo(): PDO
+    {
+        return DBHandlerSelect::getInstance()->getConnection();
+    }
+}
+
+if (!function_exists('mnt_h')) {
+    function mnt_h($value): string
+    {
+        return htmlspecialchars((string)$value, ENT_QUOTES, 'UTF-8');
+    }
+}
+
+/**
+ * Minimal HTML email body, same visual language as the scadenzario mails.
+ *
+ * Lives here rather than in cron/send_notifications.php so that the preview
+ * (make mail-preview-html) renders exactly what the cron sends, instead of a
+ * copy that drifts.
+ */
+if (!function_exists('mnt_mail_body')) {
+    function mnt_mail_body(string $heading, string $subject, string $message, string $color, string $url): string
+    {
+        $safeHeading = htmlspecialchars($heading, ENT_QUOTES, 'UTF-8');
+        $safeSubject = htmlspecialchars($subject, ENT_QUOTES, 'UTF-8');
+
+        return '<!doctype html><html><body style="margin:0;padding:24px;background:#f4f6f8;font-family:Arial,Helvetica,sans-serif;color:#1e3a44">'
+            . '<div style="max-width:560px;margin:0 auto;background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.06)">'
+            . '<div style="background:' . $color . ';color:#fff;padding:16px 20px;font-size:17px;font-weight:bold">' . $safeHeading . '</div>'
+            . '<div style="padding:20px">'
+            . '<p style="font-size:15px;font-weight:bold;margin:0 0 10px">' . $safeSubject . '</p>'
+            . '<p style="font-size:14px;line-height:1.55;margin:0 0 18px">' . $message . '</p>'
+            . '<a href="' . htmlspecialchars($url, ENT_QUOTES, 'UTF-8') . '" style="display:inline-block;background:#2f7d8f;color:#fff;text-decoration:none;padding:10px 18px;border-radius:6px;font-size:14px">Apri la scheda</a>'
+            . '</div></div></body></html>';
+    }
+}
+
+/**
+ * Subject and body of a notification, for both kinds.
+ *
+ * @param array $maintenance  needs equipment_name, next_due_date, is_critical
+ * @return array{subject:string, body:string}
+ */
+if (!function_exists('mnt_notification_mail')) {
+    function mnt_notification_mail(array $maintenance, string $label, int $daysLeft, string $detailUrl, ?string $today = null): array
+    {
+        $today = $today ?? date('Y-m-d');
+        $isOverdue = $maintenance['next_due_date'] < $today;
+        $due = date('d/m/Y', strtotime($maintenance['next_due_date']));
+
+        $criticalNote = (int)($maintenance['is_critical'] ?? 0) === 1
+            ? '<br><strong style="color:#b02a37">Manutenzione critica.</strong>'
+            : '';
+
+        if ($isOverdue) {
+            return [
+                'subject' => '⚠️ Manutenzione scaduta: ' . $maintenance['equipment_name'],
+                'body' => mnt_mail_body(
+                    'Manutenzione scaduta',
+                    $maintenance['equipment_name'] . ' — ' . $label,
+                    'Era prevista per il <strong>' . $due . '</strong>, in ritardo di <strong>'
+                    . abs($daysLeft) . ' giorni</strong>.' . $criticalNote,
+                    '#dc3545',
+                    $detailUrl
+                ),
+            ];
+        }
+
+        $daysText = $daysLeft === 0 ? '<strong>oggi</strong>' : 'tra <strong>' . $daysLeft . ' giorni</strong>';
+
+        return [
+            'subject' => '🔧 Manutenzione in scadenza: ' . $maintenance['equipment_name'],
+            'body' => mnt_mail_body(
+                'Manutenzione in scadenza',
+                $maintenance['equipment_name'] . ' — ' . $label,
+                'È prevista per il <strong>' . $due . '</strong> (' . $daysText . ').' . $criticalNote,
+                '#2f7d8f',
+                $detailUrl
+            ),
+        ];
+    }
+}
+
+/**
+ * Reads ?page and ?per_page for the paged lists.
+ *
+ * per_page is a whitelist, not a free number: it lands in a LIMIT clause and
+ * an open value would let anyone ask for the whole table in one request.
+ * Returns [page, perPage] with page still unbounded above — the caller clamps
+ * it once it knows how many rows the filters actually match.
+ */
+if (!function_exists('mnt_page_params')) {
+    function mnt_page_params(int $default = 25): array
+    {
+        $allowed = [25, 50, 100];
+        $perPage = isset($_GET['per_page']) ? (int)$_GET['per_page'] : $default;
+        if (!in_array($perPage, $allowed, true)) {
+            $perPage = $default;
+        }
+
+        $page = isset($_GET['page']) ? (int)$_GET['page'] : 1;
+
+        return [max(1, $page), $perPage];
+    }
+}
+
+/**
+ * Frequency units offered in the maintenance form.
+ * 'on_demand' = no automatic due date (the client's "al bisogno" cases).
+ */
+if (!function_exists('mnt_frequency_units')) {
+    function mnt_frequency_units(): array
+    {
+        return [
+            'day'       => 'Giorni',
+            'week'      => 'Settimane',
+            'month'     => 'Mesi',
+            'year'      => 'Anni',
+            'on_demand' => 'Al bisogno (senza scadenza automatica)',
+        ];
+    }
+}
+
+if (!function_exists('mnt_intervention_types')) {
+    function mnt_intervention_types(): array
+    {
+        return ['scheduled' => 'Programmata', 'extraordinary' => 'Straordinaria'];
+    }
+}
+
+if (!function_exists('mnt_execution_types')) {
+    function mnt_execution_types(): array
+    {
+        return ['internal' => 'Interna', 'external' => 'Esterna'];
+    }
+}
+
+if (!function_exists('mnt_equipment_statuses')) {
+    function mnt_equipment_statuses(): array
+    {
+        return [
+            'active'         => 'Attivo',
+            'out_of_service' => 'Fuori servizio',
+            'decommissioned' => 'Dismesso',
+        ];
+    }
+}
+
+/**
+ * Options managed through the existing lookup_values.php CRUD.
+ * Falls back to sensible defaults if the category has no rows yet.
+ */
+if (!function_exists('mnt_lookup')) {
+    function mnt_lookup(PDO $pdo, string $category, array $fallback = []): array
+    {
+        static $cache = [];
+
+        if (!isset($cache[$category])) {
+            $stmt = $pdo->prepare("
+                SELECT value, label
+                FROM ws_lookup_options
+                WHERE category = ? AND is_active = 1
+                ORDER BY sort_order ASC, label ASC
+            ");
+            $stmt->execute([$category]);
+
+            $options = [];
+            foreach ($stmt->fetchAll(PDO::FETCH_ASSOC) as $row) {
+                $options[$row['value']] = $row['label'];
+            }
+
+            $cache[$category] = $options ?: $fallback;
+        }
+
+        return $cache[$category];
+    }
+}
+
+/**
+ * Next due date = last completed intervention + frequency.
+ * Returns null when the maintenance has no automatic schedule or was never done.
+ */
+if (!function_exists('mnt_calc_next_due')) {
+    function mnt_calc_next_due(?string $lastDoneDate, ?int $frequencyValue, string $frequencyUnit): ?string
+    {
+        if ($lastDoneDate === null || $frequencyUnit === 'on_demand' || !$frequencyValue) {
+            return null;
+        }
+
+        $map = ['day' => 'day', 'week' => 'week', 'month' => 'month', 'year' => 'year'];
+        if (!isset($map[$frequencyUnit])) {
+            return null;
+        }
+
+        $date = date_create($lastDoneDate);
+        if (!$date) {
+            return null;
+        }
+
+        $dayOfMonth = (int)$date->format('j');
+        $date->modify('+' . $frequencyValue . ' ' . $map[$frequencyUnit]);
+
+        // PHP fa traboccare i mesi corti: 31/01 +1 mese diventa 03/03.
+        // Per una manutenzione la data attesa è l'ultimo giorno del mese.
+        if (in_array($frequencyUnit, ['month', 'year'], true) && (int)$date->format('j') !== $dayOfMonth) {
+            $date->modify('last day of previous month');
+        }
+
+        return $date->format('Y-m-d');
+    }
+}
+
+/**
+ * Recompute last_done_date / next_due_date of a maintenance from its
+ * completed interventions. Call after any intervention insert/update/delete.
+ */
+if (!function_exists('mnt_recalc_maintenance')) {
+    function mnt_recalc_maintenance(PDO $pdo, int $maintenanceId): void
+    {
+        $stmt = $pdo->prepare("SELECT frequency_value, frequency_unit FROM maint_maintenances WHERE id = ?");
+        $stmt->execute([$maintenanceId]);
+        $maintenance = $stmt->fetch(PDO::FETCH_ASSOC);
+
+        if (!$maintenance) {
+            return;
+        }
+
+        // Only completed interventions move the schedule; planned/in-progress do not.
+        $stmt = $pdo->prepare("
+            SELECT MAX(performed_at)
+            FROM maint_interventions
+            WHERE maintenance_id = ? AND status = 'completed'
+        ");
+        $stmt->execute([$maintenanceId]);
+        $lastDone = $stmt->fetchColumn() ?: null;
+
+        $nextDue = mnt_calc_next_due(
+            $lastDone,
+            $maintenance['frequency_value'] !== null ? (int)$maintenance['frequency_value'] : null,
+            (string)$maintenance['frequency_unit']
+        );
+
+        $stmt = $pdo->prepare("UPDATE maint_maintenances SET last_done_date = ?, next_due_date = ? WHERE id = ?");
+        $stmt->execute([$lastDone, $nextDue, $maintenanceId]);
+    }
+}
+
+/**
+ * Schedule state of a maintenance, used for badges and filters.
+ * Returns one of: overdue | due_soon | ok | none
+ */
+if (!function_exists('mnt_due_state')) {
+    function mnt_due_state(?string $nextDueDate, int $alertDays = 0, ?string $today = null): string
+    {
+        if (empty($nextDueDate)) {
+            return 'none';
+        }
+
+        $today = $today ?: date('Y-m-d');
+
+        if ($nextDueDate < $today) {
+            return 'overdue';
+        }
+
+        $threshold = date('Y-m-d', strtotime($today . ' +' . max(0, $alertDays) . ' days'));
+
+        return $nextDueDate <= $threshold ? 'due_soon' : 'ok';
+    }
+}
+
+if (!function_exists('mnt_due_badge')) {
+    /**
+     * Lo stato "none" copre due casi diversi che non vanno confusi:
+     * una manutenzione al bisogno (per scelta senza scadenza) e una
+     * programmata mai eseguita (la scadenza arriverà al primo intervento).
+     */
+    function mnt_due_badge(string $state, ?string $frequencyUnit = null): array
+    {
+        switch ($state) {
+            case 'overdue':
+                return ['label' => 'Scaduta', 'class' => 'mnt-badge-overdue'];
+            case 'due_soon':
+                return ['label' => 'In scadenza', 'class' => 'mnt-badge-soon'];
+            case 'ok':
+                return ['label' => 'In regola', 'class' => 'mnt-badge-ok'];
+            default:
+                if ($frequencyUnit !== null && $frequencyUnit !== 'on_demand') {
+                    return ['label' => 'Mai eseguita', 'class' => 'mnt-badge-none'];
+                }
+
+                return ['label' => 'Al bisogno', 'class' => 'mnt-badge-none'];
+        }
+    }
+}
+
+if (!function_exists('mnt_format_date')) {
+    function mnt_format_date(?string $date): string
+    {
+        if (empty($date) || $date === '0000-00-00') {
+            return '—';
+        }
+
+        $ts = strtotime($date);
+
+        return $ts ? date('d/m/Y', $ts) : '—';
+    }
+}
+
+/**
+ * Human-readable frequency ("Ogni 3 mesi", "Al bisogno").
+ */
+if (!function_exists('mnt_format_frequency')) {
+    function mnt_format_frequency(?int $value, string $unit, ?string $note = null): string
+    {
+        $units = [
+            'day'   => ['giorno', 'giorni'],
+            'week'  => ['settimana', 'settimane'],
+            'month' => ['mese', 'mesi'],
+            'year'  => ['anno', 'anni'],
+        ];
+
+        if ($unit === 'on_demand' || !$value || !isset($units[$unit])) {
+            $text = 'Al bisogno';
+        } else {
+            $word = $value === 1 ? $units[$unit][0] : $units[$unit][1];
+            $text = 'Ogni ' . $value . ' ' . $word;
+        }
+
+        if (!empty($note)) {
+            $text .= ' — ' . $note;
+        }
+
+        return $text;
+    }
+}
+
+/**
+ * Audit log entry. All ids are optional so the same call works for
+ * equipment, maintenance and intervention events.
+ */
+if (!function_exists('mnt_log')) {
+    function mnt_log(
+        PDO $pdo,
+        string $action,
+        ?int $equipmentId = null,
+        ?int $maintenanceId = null,
+        ?int $interventionId = null,
+        ?int $userId = null,
+        ?array $changes = null,
+        ?string $notes = null
+    ): void {
+        $stmt = $pdo->prepare("
+            INSERT INTO maint_histories
+                (equipment_id, maintenance_id, intervention_id, user_id, action, changes, notes)
+            VALUES (?, ?, ?, ?, ?, ?, ?)
+        ");
+        $stmt->execute([
+            $equipmentId,
+            $maintenanceId,
+            $interventionId,
+            $userId,
+            $action,
+            $changes !== null ? json_encode($changes, JSON_UNESCAPED_UNICODE) : null,
+            $notes,
+        ]);
+    }
+}
+
+/**
+ * Store one uploaded file into attachments/ and return its metadata.
+ * Throws RuntimeException on a rejected file.
+ */
+if (!function_exists('mnt_store_upload')) {
+    function mnt_store_upload(array $file, string $prefix = 'mnt'): array
+    {
+        $allowedExtensions = [
+            'pdf', 'doc', 'docx', 'xls', 'xlsx', 'csv', 'txt', 'odt', 'ods',
+            'jpg', 'jpeg', 'png', 'gif', 'webp', 'heic', 'bmp', 'zip',
+        ];
+        $maxBytes = 20 * 1024 * 1024;
+
+        if (($file['error'] ?? UPLOAD_ERR_NO_FILE) !== UPLOAD_ERR_OK) {
+            throw new RuntimeException('Errore durante il caricamento del file.');
+        }
+
+        if (($file['size'] ?? 0) > $maxBytes) {
+            throw new RuntimeException('File troppo grande (massimo 20 MB).');
+        }
+
+        $originalName = (string)($file['name'] ?? 'file');
+        $extension = strtolower(pathinfo($originalName, PATHINFO_EXTENSION));
+
+        if (!in_array($extension, $allowedExtensions, true)) {
+            throw new RuntimeException('Tipo di file non consentito: .' . $extension);
+        }
+
+        $uploadDir = __DIR__ . '/../attachments/';
+        if (!is_dir($uploadDir) && !mkdir($uploadDir, 0755, true) && !is_dir($uploadDir)) {
+            throw new RuntimeException('Cartella allegati non scrivibile.');
+        }
+
+        $storedName = uniqid($prefix . '_', true) . '.' . $extension;
+        $safeStored = preg_replace('/[^A-Za-z0-9._-]/', '_', $storedName);
+
+        if (!move_uploaded_file($file['tmp_name'], $uploadDir . $safeStored)) {
+            throw new RuntimeException('Impossibile salvare il file.');
+        }
+
+        return [
+            'original_name' => $originalName,
+            'stored_name'   => $safeStored,
+            'mime_type'     => $file['type'] ?? null,
+            'size'          => (int)($file['size'] ?? 0),
+            'is_image'      => in_array($extension, ['jpg', 'jpeg', 'png', 'gif', 'webp', 'bmp'], true),
+        ];
+    }
+}
+
+if (!function_exists('mnt_delete_stored_file')) {
+    function mnt_delete_stored_file(string $storedName): void
+    {
+        $path = __DIR__ . '/../attachments/' . basename($storedName);
+
+        if (is_file($path)) {
+            @unlink($path);
+        }
+    }
+}
+
+/**
+ * Employees / suppliers / departments pickers, shared by several forms.
+ */
+if (!function_exists('mnt_form_data')) {
+    function mnt_form_data(PDO $pdo): array
+    {
+        return [
+            'categories' => $pdo->query("
+                SELECT id, name, color, requires_line
+                FROM inv_categories
+                WHERE is_active = 1
+                ORDER BY sort_order ASC, name ASC
+            ")->fetchAll(PDO::FETCH_ASSOC),
+
+            'lines' => $pdo->query("
+                SELECT id, line_number, name, color
+                FROM production_lines
+                ORDER BY line_number ASC
+            ")->fetchAll(PDO::FETCH_ASSOC),
+
+            'departments' => $pdo->query("
+                SELECT id, name
+                FROM departments
+                WHERE is_active = 1
+                ORDER BY sort_order ASC, name ASC
+            ")->fetchAll(PDO::FETCH_ASSOC),
+
+            'employees' => $pdo->query("
+                SELECT id, CONCAT(first_name, ' ', last_name) AS full_name
+                FROM employees
+                WHERE status = 'active'
+                ORDER BY first_name ASC, last_name ASC
+            ")->fetchAll(PDO::FETCH_ASSOC),
+
+            'suppliers' => $pdo->query("
+                SELECT idsupplier AS id, supplier_name AS name
+                FROM suppliers
+                ORDER BY supplier_name ASC
+            ")->fetchAll(PDO::FETCH_ASSOC),
+        ];
+    }
+}

public/userarea/manutenzioni/include/intervention_modal.php

@@ -0,0 +1,310 @@
+<?php
+
+/**
+ * Register/edit one intervention.
+ * Expects $formData and $pdo in scope. Defines mntOpenInterventionModal(data, maintenance).
+ *
+ * The signature is drawn on a canvas (finger on tablet, mouse on PC) and
+ * posted as a PNG data URL.
+ */
+
+$statusOptions = mnt_lookup($pdo, 'maint_status', [
+    'planned' => 'Pianificato',
+    'in_progress' => 'In corso',
+    'completed' => 'Completato',
+]);
+
+$resultOptions = mnt_lookup($pdo, 'maint_result', [
+    'compliant' => 'Conforme',
+    'not_compliant' => 'Non conforme',
+    'blocked' => 'Bloccato',
+]);
+?>
+<div class="modal fade" id="interventionModal" tabindex="-1" aria-hidden="true">
+    <div class="modal-dialog modal-lg modal-dialog-centered modal-fullscreen-sm-down">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title" id="interventionModalTitle">Registra intervento</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Chiudi"></button>
+            </div>
+            <form id="interventionForm">
+                <div class="modal-body">
+                    <input type="hidden" name="id" id="ivId" value="">
+                    <input type="hidden" name="maintenance_id" id="ivMaintenanceId" value="">
+                    <input type="hidden" name="signature" id="ivSignature" value="">
+                    <input type="hidden" name="clear_signature" id="ivClearSignature" value="">
+
+                    <div class="alert alert-light border small mb-3" id="ivContext"></div>
+
+                    <div class="row g-3">
+                        <div class="col-12 col-md-4">
+                            <label class="form-label fw-semibold">Data <span class="text-danger">*</span></label>
+                            <input type="date" class="form-control" name="performed_at" id="ivDate" required>
+                        </div>
+
+                        <div class="col-6 col-md-4">
+                            <label class="form-label fw-semibold">Stato</label>
+                            <select class="form-select" name="status" id="ivStatus">
+                                <?php foreach ($statusOptions as $value => $label): ?>
+                                    <option value="<?= mnt_h($value) ?>" <?= $value === 'completed' ? 'selected' : '' ?>>
+                                        <?= mnt_h($label) ?>
+                                    </option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+
+                        <div class="col-6 col-md-4">
+                            <label class="form-label fw-semibold">Esito</label>
+                            <select class="form-select" name="result" id="ivResult">
+                                <option value="">—</option>
+                                <?php foreach ($resultOptions as $value => $label): ?>
+                                    <option value="<?= mnt_h($value) ?>"><?= mnt_h($label) ?></option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Operatore</label>
+                            <select class="form-select" name="operator_employee_id" id="ivOperator">
+                                <option value="">—</option>
+                                <?php foreach ($formData['employees'] as $employee): ?>
+                                    <option value="<?= (int)$employee['id'] ?>"><?= mnt_h($employee['full_name']) ?></option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Operatore esterno</label>
+                            <input type="text" class="form-control" name="operator_name" id="ivOperatorName" maxlength="191"
+                                placeholder="Nome tecnico non presente in anagrafica">
+                        </div>
+
+                        <div class="col-12">
+                            <label class="form-label fw-semibold">Fornitore</label>
+                            <select class="form-select" name="supplier_id" id="ivSupplier">
+                                <option value="">—</option>
+                                <?php foreach ($formData['suppliers'] as $supplier): ?>
+                                    <option value="<?= (int)$supplier['id'] ?>"><?= mnt_h($supplier['name']) ?></option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+
+                        <div class="col-12">
+                            <label class="form-label fw-semibold">Note sull'intervento</label>
+                            <textarea class="form-control" name="notes" id="ivNotes" rows="3"></textarea>
+                        </div>
+
+                        <div class="col-12">
+                            <label class="form-label fw-semibold">Materiali / parti sostituite</label>
+                            <textarea class="form-control" name="materials" id="ivMaterials" rows="2"></textarea>
+                        </div>
+
+                        <div class="col-12">
+                            <label class="form-label fw-semibold">Firma operatore</label>
+                            <div class="mnt-signature-wrap">
+                                <canvas id="ivSignatureCanvas"></canvas>
+                            </div>
+                            <div class="d-flex justify-content-between align-items-center mt-1">
+                                <span class="form-text mb-0">Firma con il dito su tablet o con il mouse.</span>
+                                <button type="button" class="btn btn-sm btn-light" id="ivSignatureClear">Cancella firma</button>
+                            </div>
+                            <div id="ivExistingSignature" class="mt-2" style="display:none">
+                                <span class="mnt-section-title">Firma registrata</span>
+                                <img id="ivExistingSignatureImg" alt="Firma" style="max-height:90px;border:1px solid #e6eef0;border-radius:.4rem;background:#fff">
+                            </div>
+                        </div>
+
+                        <div class="col-12">
+                            <label class="form-label fw-semibold">Allegati (modulo del fornitore, foto)</label>
+                            <div id="ivFilesList" class="mb-2"></div>
+                            <input type="file" class="form-control" id="ivFilesInput" multiple>
+                        </div>
+                    </div>
+                </div>
+                <div class="modal-footer">
+                    <button type="button" class="btn btn-light" data-bs-dismiss="modal">Annulla</button>
+                    <button type="submit" class="btn btn-mnt-primary">Salva intervento</button>
+                </div>
+            </form>
+        </div>
+    </div>
+</div>
+
+<script>
+    (function () {
+        let canvas, ctx, drawing = false, hasStrokes = false;
+
+        function resizeCanvas() {
+            if (!canvas) return;
+            const ratio = window.devicePixelRatio || 1;
+            const rect = canvas.getBoundingClientRect();
+            // Preserve what is already drawn across a resize
+            const snapshot = hasStrokes ? canvas.toDataURL() : null;
+
+            canvas.width = rect.width * ratio;
+            canvas.height = rect.height * ratio;
+            ctx.setTransform(ratio, 0, 0, ratio, 0, 0);
+            ctx.lineWidth = 2;
+            ctx.lineCap = 'round';
+            ctx.strokeStyle = '#1e3a44';
+
+            if (snapshot) {
+                const img = new Image();
+                img.onload = () => ctx.drawImage(img, 0, 0, rect.width, rect.height);
+                img.src = snapshot;
+            }
+        }
+
+        function pointerPos(event) {
+            const rect = canvas.getBoundingClientRect();
+            const source = event.touches ? event.touches[0] : event;
+            return { x: source.clientX - rect.left, y: source.clientY - rect.top };
+        }
+
+        function startDraw(event) {
+            event.preventDefault();
+            drawing = true;
+            hasStrokes = true;
+            const p = pointerPos(event);
+            ctx.beginPath();
+            ctx.moveTo(p.x, p.y);
+        }
+
+        function moveDraw(event) {
+            if (!drawing) return;
+            event.preventDefault();
+            const p = pointerPos(event);
+            ctx.lineTo(p.x, p.y);
+            ctx.stroke();
+        }
+
+        function endDraw() { drawing = false; }
+
+        function clearCanvas() {
+            if (!ctx) return;
+            const rect = canvas.getBoundingClientRect();
+            ctx.clearRect(0, 0, rect.width, rect.height);
+            hasStrokes = false;
+        }
+
+        window.mntOpenInterventionModal = function (data, maintenance) {
+            const isEdit = !!data;
+
+            $('#interventionModalTitle').text(isEdit ? 'Modifica intervento' : 'Registra intervento');
+            $('#ivContext').html(
+                '<strong>' + $('<div>').text(maintenance.equipment_name || '').html() + '</strong> — ' +
+                $('<div>').text(maintenance.title || '').html()
+            );
+
+            $('#ivId').val(isEdit ? data.id : '');
+            $('#ivMaintenanceId').val(maintenance.id);
+            $('#ivDate').val(isEdit ? data.performed_at : new Date().toISOString().slice(0, 10));
+            $('#ivStatus').val(isEdit ? data.status : 'completed');
+            $('#ivResult').val(isEdit ? (data.result || '') : '');
+            $('#ivOperator').val(isEdit && data.operator_employee_id ? String(data.operator_employee_id) : '');
+            $('#ivOperatorName').val(isEdit ? (data.operator_name || '') : '');
+            $('#ivSupplier').val(isEdit && data.supplier_id ? String(data.supplier_id) : (maintenance.supplier_id || ''));
+            $('#ivNotes').val(isEdit ? (data.notes || '') : '');
+            $('#ivMaterials').val(isEdit ? (data.materials || '') : '');
+            $('#ivSignature').val('');
+            $('#ivClearSignature').val('');
+            $('#ivFilesInput').val('');
+            $('#ivFilesList').empty();
+
+            if (isEdit && data.signature_path) {
+                $('#ivExistingSignatureImg').attr('src', 'manutenzioni/ajax/download_file.php?scope=signature&id=' + data.id);
+                $('#ivExistingSignature').show();
+            } else {
+                $('#ivExistingSignature').hide();
+            }
+
+            if (isEdit && data.files) {
+                data.files.forEach(f => {
+                    $('#ivFilesList').append(
+                        $('<div class="mnt-file-row"></div>').append(
+                            $('<i class="fa-solid fa-paperclip text-muted"></i>'),
+                            $('<a class="file-name" target="_blank"></a>')
+                                .attr('href', 'manutenzioni/ajax/download_file.php?scope=intervention&id=' + f.id)
+                                .text(f.original_name),
+                            $('<button type="button" class="btn-action btn-action-delete btn-del-iv-file"><i class="fa-solid fa-trash"></i></button>')
+                                .attr('data-id', f.id)
+                        )
+                    );
+                });
+            }
+
+            const modal = new bootstrap.Modal('#interventionModal');
+            modal.show();
+
+            $('#interventionModal').one('shown.bs.modal', function () {
+                clearCanvas();
+                resizeCanvas();
+            });
+        };
+
+        $(function () {
+            canvas = document.getElementById('ivSignatureCanvas');
+            if (!canvas) return;
+            ctx = canvas.getContext('2d');
+
+            canvas.addEventListener('mousedown', startDraw);
+            canvas.addEventListener('mousemove', moveDraw);
+            window.addEventListener('mouseup', endDraw);
+            canvas.addEventListener('touchstart', startDraw, { passive: false });
+            canvas.addEventListener('touchmove', moveDraw, { passive: false });
+            canvas.addEventListener('touchend', endDraw);
+            window.addEventListener('resize', resizeCanvas);
+
+            $('#ivSignatureClear').on('click', function () {
+                clearCanvas();
+                // Also drop a signature stored earlier
+                if ($('#ivExistingSignature').is(':visible')) {
+                    $('#ivClearSignature').val('1');
+                    $('#ivExistingSignature').hide();
+                }
+            });
+
+            $('#ivFilesList').on('click', '.btn-del-iv-file', function () {
+                const $row = $(this).closest('.mnt-file-row');
+                $.post('manutenzioni/ajax/delete_file.php', { scope: 'intervention', id: $(this).data('id') })
+                    .done(res => {
+                        if (res.success) { $row.remove(); }
+                        else { Swal.fire({ icon: 'error', title: 'Errore', text: res.message }); }
+                    });
+            });
+
+            $('#interventionForm').on('submit', function (e) {
+                e.preventDefault();
+
+                if (!$('#ivDate').val()) {
+                    Swal.fire({ icon: 'warning', title: 'Indica la data dell\'intervento' });
+                    return;
+                }
+
+                if (hasStrokes) { $('#ivSignature').val(canvas.toDataURL('image/png')); }
+
+                $.post('manutenzioni/ajax/save_intervention.php', $(this).serialize())
+                    .done(res => {
+                        if (!res.success) {
+                            Swal.fire({ icon: 'error', title: 'Errore', text: res.message });
+                            return;
+                        }
+
+                        const input = document.getElementById('ivFilesInput');
+                        if (!input.files.length) { location.reload(); return; }
+
+                        const form = new FormData();
+                        form.append('scope', 'intervention');
+                        form.append('owner_id', res.id);
+                        Array.from(input.files).forEach(f => form.append('files[]', f));
+
+                        $.ajax({
+                            url: 'manutenzioni/ajax/upload_file.php',
+                            method: 'POST', data: form, processData: false, contentType: false, dataType: 'json'
+                        }).always(() => location.reload());
+                    })
+                    .fail(() => Swal.fire({ icon: 'error', title: 'Errore di rete' }));
+            });
+        });
+    })();
+</script>

public/userarea/manutenzioni/include/maintenance_modal.php

@@ -0,0 +1,259 @@
+<?php
+
+/**
+ * Create/edit modal for a maintenance.
+ * Expects $formData in scope. Defines mntOpenMaintenanceModal(data, equipmentId).
+ */
+?>
+<div class="modal fade" id="maintenanceModal" tabindex="-1" aria-hidden="true">
+    <div class="modal-dialog modal-lg modal-dialog-centered modal-fullscreen-sm-down">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title" id="maintenanceModalTitle">Nuova manutenzione</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Chiudi"></button>
+            </div>
+            <form id="maintenanceForm">
+                <div class="modal-body">
+                    <input type="hidden" name="id" id="mtId" value="">
+                    <input type="hidden" name="equipment_id" id="mtEquipmentId" value="">
+
+                    <div class="row g-3">
+                        <div class="col-4 col-md-2">
+                            <label class="form-label fw-semibold">Codice</label>
+                            <input type="text" class="form-control" name="code" id="mtCode" maxlength="10" placeholder="A">
+                        </div>
+
+                        <div class="col-8 col-md-10">
+                            <label class="form-label fw-semibold">Titolo <span class="text-danger">*</span></label>
+                            <input type="text" class="form-control" name="title" id="mtTitle" maxlength="500" required>
+                        </div>
+
+                        <div class="col-12">
+                            <label class="form-label fw-semibold">Descrizione dell'intervento</label>
+                            <textarea class="form-control" name="description" id="mtDescription" rows="3"></textarea>
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Tipo</label>
+                            <select class="form-select" name="intervention_type" id="mtType">
+                                <?php foreach (mnt_intervention_types() as $value => $label): ?>
+                                    <option value="<?= mnt_h($value) ?>"><?= mnt_h($label) ?></option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Esecuzione</label>
+                            <select class="form-select" name="execution_type" id="mtExecution">
+                                <?php foreach (mnt_execution_types() as $value => $label): ?>
+                                    <option value="<?= mnt_h($value) ?>"><?= mnt_h($label) ?></option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+
+                        <div class="col-12" id="mtSupplierWrap" style="display:none">
+                            <label class="form-label fw-semibold">Fornitore esterno <span class="text-danger">*</span></label>
+                            <select class="form-select" name="supplier_id" id="mtSupplier">
+                                <option value="">— seleziona —</option>
+                                <?php foreach ($formData['suppliers'] as $supplier): ?>
+                                    <option value="<?= (int)$supplier['id'] ?>"><?= mnt_h($supplier['name']) ?></option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+
+                        <div class="col-12">
+                            <div class="mnt-section-title mb-0 mt-2">Frequenza</div>
+                        </div>
+
+                        <div class="col-6 col-md-3">
+                            <label class="form-label fw-semibold">Ogni</label>
+                            <input type="number" class="form-control" name="frequency_value" id="mtFrequencyValue" min="1" max="999" value="1">
+                        </div>
+
+                        <div class="col-6 col-md-5">
+                            <label class="form-label fw-semibold">Unità</label>
+                            <select class="form-select" name="frequency_unit" id="mtFrequencyUnit">
+                                <?php foreach (mnt_frequency_units() as $value => $label): ?>
+                                    <option value="<?= mnt_h($value) ?>" <?= $value === 'month' ? 'selected' : '' ?>><?= mnt_h($label) ?></option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+
+                        <div class="col-12 col-md-4">
+                            <label class="form-label fw-semibold">Preavviso (giorni)</label>
+                            <input type="number" class="form-control" name="alert_days" id="mtAlertDays" min="0" max="365" value="7">
+                        </div>
+
+                        <div class="col-12">
+                            <label class="form-label fw-semibold">Nota sulla frequenza</label>
+                            <input type="text" class="form-control" name="frequency_note" id="mtFrequencyNote" maxlength="500"
+                                placeholder="Es. prima dell'accensione, d'estate settimanale, dopo lo spegnimento">
+                            <div class="form-text">Per i casi che non rientrano in un intervallo fisso.</div>
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Incaricato</label>
+                            <select class="form-select" name="assignee_employee_id" id="mtAssignee">
+                                <option value="">—</option>
+                                <?php foreach ($formData['employees'] as $employee): ?>
+                                    <option value="<?= (int)$employee['id'] ?>"><?= mnt_h($employee['full_name']) ?></option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+
+                        <div class="col-12 col-md-6">
+                            <label class="form-label fw-semibold">Responsabile</label>
+                            <select class="form-select" name="supervisor_employee_id" id="mtSupervisor">
+                                <option value="">—</option>
+                                <?php foreach ($formData['employees'] as $employee): ?>
+                                    <option value="<?= (int)$employee['id'] ?>"><?= mnt_h($employee['full_name']) ?></option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+
+                        <div class="col-12">
+                            <label class="form-label fw-semibold">Note</label>
+                            <textarea class="form-control" name="notes" id="mtNotes" rows="2"></textarea>
+                        </div>
+
+                        <div class="col-12 d-flex flex-wrap gap-4">
+                            <div class="form-check">
+                                <input class="form-check-input" type="checkbox" name="is_critical" id="mtCritical" value="1">
+                                <label class="form-check-label fw-semibold" for="mtCritical">Manutenzione critica</label>
+                            </div>
+                            <div class="form-check">
+                                <!-- Una checkbox non spuntata non viene inviata: senza questo campo
+                                     nascosto (che deve precederla) l'endpoint riceverebbe sempre
+                                     "attiva" e la manutenzione non si potrebbe mai disattivare. -->
+                                <input type="hidden" name="is_active" value="0">
+                                <input class="form-check-input" type="checkbox" name="is_active" id="mtActive" value="1" checked>
+                                <label class="form-check-label fw-semibold" for="mtActive">Attiva</label>
+                            </div>
+                        </div>
+
+                        <div class="col-12" id="mtFilesWrap">
+                            <div class="mnt-section-title mt-2">Istruzioni allegate</div>
+                            <div id="mtFilesList" class="mb-2"></div>
+                            <input type="file" class="form-control" id="mtFilesInput" multiple>
+                            <div class="form-text">I file vengono caricati dopo il salvataggio.</div>
+                        </div>
+                    </div>
+                </div>
+                <div class="modal-footer">
+                    <button type="button" class="btn btn-light" data-bs-dismiss="modal">Annulla</button>
+                    <button type="submit" class="btn btn-mnt-primary">Salva</button>
+                </div>
+            </form>
+        </div>
+    </div>
+</div>
+
+<script>
+    function mntSyncMaintenanceForm() {
+        const isExternal = $('#mtExecution').val() === 'external';
+        $('#mtSupplierWrap').toggle(isExternal);
+
+        const onDemand = $('#mtFrequencyUnit').val() === 'on_demand';
+        $('#mtFrequencyValue').prop('disabled', onDemand).closest('.col-6').toggle(!onDemand);
+        $('#mtAlertDays').prop('disabled', onDemand);
+    }
+
+    function mntRenderMaintenanceFiles(files) {
+        const $list = $('#mtFilesList').empty();
+        if (!files || !files.length) { return; }
+
+        files.forEach(f => {
+            $list.append(
+                $('<div class="mnt-file-row"></div>').append(
+                    $('<i class="fa-solid fa-paperclip text-muted"></i>'),
+                    $('<a class="file-name" target="_blank"></a>')
+                        .attr('href', 'manutenzioni/ajax/download_file.php?scope=maintenance&id=' + f.id)
+                        .text(f.original_name),
+                    $('<button type="button" class="btn-action btn-action-delete btn-del-file"><i class="fa-solid fa-trash"></i></button>')
+                        .attr('data-id', f.id)
+                )
+            );
+        });
+    }
+
+    function mntOpenMaintenanceModal(data, equipmentId) {
+        const isEdit = !!data;
+        $('#maintenanceModalTitle').text(isEdit ? 'Modifica manutenzione' : 'Nuova manutenzione');
+
+        $('#mtId').val(isEdit ? data.id : '');
+        $('#mtEquipmentId').val(isEdit ? data.equipment_id : (equipmentId || ''));
+        $('#mtCode').val(isEdit ? (data.code || '') : '');
+        $('#mtTitle').val(isEdit ? (data.title || '') : '');
+        $('#mtDescription').val(isEdit ? (data.description || '') : '');
+        $('#mtType').val(isEdit ? data.intervention_type : 'scheduled');
+        $('#mtExecution').val(isEdit ? data.execution_type : 'internal');
+        $('#mtSupplier').val(isEdit && data.supplier_id ? String(data.supplier_id) : '');
+        $('#mtFrequencyValue').val(isEdit && data.frequency_value ? data.frequency_value : 1);
+        $('#mtFrequencyUnit').val(isEdit ? data.frequency_unit : 'month');
+        $('#mtFrequencyNote').val(isEdit ? (data.frequency_note || '') : '');
+        $('#mtAlertDays').val(isEdit ? data.alert_days : 7);
+        $('#mtAssignee').val(isEdit && data.assignee_employee_id ? String(data.assignee_employee_id) : '');
+        $('#mtSupervisor').val(isEdit && data.supervisor_employee_id ? String(data.supervisor_employee_id) : '');
+        $('#mtNotes').val(isEdit ? (data.notes || '') : '');
+        $('#mtCritical').prop('checked', isEdit ? Number(data.is_critical) === 1 : false);
+        $('#mtActive').prop('checked', isEdit ? Number(data.is_active) === 1 : true);
+
+        mntRenderMaintenanceFiles(isEdit ? (data.files || []) : []);
+        $('#mtFilesInput').val('');
+
+        mntSyncMaintenanceForm();
+        new bootstrap.Modal('#maintenanceModal').show();
+    }
+
+    $(function () {
+        $('#mtExecution, #mtFrequencyUnit').on('change', mntSyncMaintenanceForm);
+
+        $('#mtFilesList').on('click', '.btn-del-file', function () {
+            const $row = $(this).closest('.mnt-file-row');
+            $.post('manutenzioni/ajax/delete_file.php', { scope: 'maintenance', id: $(this).data('id') })
+                .done(res => {
+                    if (res.success) { $row.remove(); }
+                    else { Swal.fire({ icon: 'error', title: 'Errore', text: res.message }); }
+                });
+        });
+
+        $('#maintenanceForm').on('submit', function (e) {
+            e.preventDefault();
+
+            if (!$('#mtTitle').val().trim()) {
+                Swal.fire({ icon: 'warning', title: 'Il titolo è obbligatorio' });
+                return;
+            }
+            if ($('#mtExecution').val() === 'external' && !$('#mtSupplier').val()) {
+                Swal.fire({ icon: 'warning', title: 'Seleziona il fornitore esterno' });
+                return;
+            }
+
+            // Disabled inputs are not serialised — send the unit explicitly
+            const payload = $(this).serializeArray();
+            payload.push({ name: 'frequency_unit', value: $('#mtFrequencyUnit').val() });
+
+            $.post('manutenzioni/ajax/save_maintenance.php', $.param(payload))
+                .done(res => {
+                    if (!res.success) {
+                        Swal.fire({ icon: 'error', title: 'Errore', text: res.message });
+                        return;
+                    }
+
+                    const input = document.getElementById('mtFilesInput');
+                    if (!input.files.length) { location.reload(); return; }
+
+                    const form = new FormData();
+                    form.append('scope', 'maintenance');
+                    form.append('owner_id', res.id);
+                    Array.from(input.files).forEach(f => form.append('files[]', f));
+
+                    $.ajax({
+                        url: 'manutenzioni/ajax/upload_file.php',
+                        method: 'POST', data: form, processData: false, contentType: false, dataType: 'json'
+                    }).always(() => location.reload());
+                })
+                .fail(() => Swal.fire({ icon: 'error', title: 'Errore di rete' }));
+        });
+    });
+</script>

public/userarea/manutenzioni/include/page_head.php

@@ -0,0 +1,171 @@
+<?php
+
+/**
+ * Shared <head> for the Manutenzioni pages.
+ *
+ * Usage (before including):
+ *   $MNT_TITLE  = 'Registro attrezzature';
+ *   $MNT_PLUGINS = ['fullcalendar']; // opzionale
+ *   include __DIR__ . '/include/page_head.php';
+ *
+ * Works from any depth under /userarea/ — the base href is derived from
+ * SCRIPT_NAME, so all asset paths stay relative to /userarea/.
+ */
+
+$MNT_TITLE = $MNT_TITLE ?? 'Manutenzioni';
+$MNT_PLUGINS = $MNT_PLUGINS ?? [];
+
+$mntScriptName = $_SERVER['SCRIPT_NAME'] ?? '';
+$mntMarker = '/userarea/';
+$mntPos = strpos($mntScriptName, $mntMarker);
+$MNT_BASE = $mntPos !== false
+    ? substr($mntScriptName, 0, $mntPos + strlen($mntMarker))
+    : '/userarea/';
+?>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<base href="<?= mnt_h($MNT_BASE) ?>">
+<?php include(__DIR__ . '/../../cssinclude.php'); ?>
+<script src="assets/js/jquery.min.js"></script>
+<title><?= mnt_h($MNT_TITLE) ?> — Manutenzioni</title>
+<?php if (in_array('fullcalendar', $MNT_PLUGINS, true)): ?>
+    <script src="manutenzioni/assets/fullcalendar.min.js"></script>
+    <script src="manutenzioni/assets/fullcalendar-it.js"></script>
+<?php endif; ?>
+<script>
+    document.addEventListener('DOMContentLoaded', function () {
+        if (typeof window.Swal === 'undefined') {
+            var local = document.createElement('script');
+            local.src = 'manutenzioni/assets/sweetalert2.min.js';
+            document.head.appendChild(local);
+        }
+    });
+</script>
+<style>
+    :root {
+        --mnt-primary: #2f7d8f;
+        --mnt-primary-hover: #256575;
+        --mnt-heading: #1e3a44;
+        --mnt-card-bg: linear-gradient(135deg, #eef7f9 0%, #e4f0f3 100%);
+        --mnt-card-border: #d6e5e9;
+    }
+
+    .mnt-card { border: none; border-radius: 0.75rem; box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06); overflow: hidden; }
+    .mnt-card .card-header { background: var(--mnt-card-bg); border-bottom: 1px solid var(--mnt-card-border); padding: 1rem 1.25rem; }
+    .mnt-card .card-header h5 { font-weight: 700; color: var(--mnt-heading); margin: 0; font-size: 1.05rem; letter-spacing: -0.01em; }
+    .mnt-card .card-body { padding: 1.25rem; }
+
+    .btn-mnt-primary { background: var(--mnt-primary); border: none; color: #fff; font-weight: 600; font-size: 0.85rem; padding: 0.5rem 1rem; border-radius: 0.5rem; transition: all 0.2s; }
+    .btn-mnt-primary:hover { background: var(--mnt-primary-hover); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(47, 125, 143, 0.3); }
+    .btn-mnt-outline { background: transparent; border: 1.5px solid var(--mnt-primary); color: var(--mnt-primary); font-weight: 600; font-size: 0.85rem; padding: 0.45rem 1rem; border-radius: 0.5rem; transition: all 0.2s; }
+    .btn-mnt-outline:hover { background: var(--mnt-primary); color: #fff; transform: translateY(-1px); }
+
+    .btn-action { width: 32px; height: 32px; padding: 0; display: inline-flex; align-items: center; justify-content: center; border: none; border-radius: 0.4rem; font-size: 0.85rem; transition: all 0.15s; text-decoration: none; }
+    .btn-action-view { background: rgba(47, 125, 143, 0.12); color: var(--mnt-primary); }
+    .btn-action-view:hover { background: var(--mnt-primary); color: #fff; }
+    .btn-action-edit { background: rgba(13, 110, 253, 0.12); color: #0d6efd; }
+    .btn-action-edit:hover { background: #0d6efd; color: #fff; }
+    .btn-action-delete { background: rgba(220, 53, 69, 0.12); color: #dc3545; }
+    .btn-action-delete:hover { background: #dc3545; color: #fff; }
+    .btn-action-done { background: rgba(25, 135, 84, 0.12); color: #198754; }
+    .btn-action-done:hover { background: #198754; color: #fff; }
+
+    /* Schedule state badges */
+    .mnt-badge { display: inline-block; padding: 0.22rem 0.6rem; border-radius: 999px; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.01em; white-space: nowrap; }
+    .mnt-badge-overdue { background: rgba(220, 53, 69, 0.14); color: #b02a37; }
+    .mnt-badge-soon { background: rgba(255, 193, 7, 0.2); color: #9a7000; }
+    .mnt-badge-ok { background: rgba(25, 135, 84, 0.14); color: #146c43; }
+    .mnt-badge-none { background: rgba(108, 117, 125, 0.14); color: #565e64; }
+    .mnt-badge-critical { background: rgba(220, 53, 69, 0.9); color: #fff; }
+    .mnt-badge-soft { background: rgba(47, 125, 143, 0.12); color: var(--mnt-primary); }
+    .mnt-badge-status-active { background: rgba(25, 135, 84, 0.14); color: #146c43; }
+    .mnt-badge-status-out_of_service { background: rgba(255, 193, 7, 0.2); color: #9a7000; }
+    .mnt-badge-status-decommissioned { background: rgba(108, 117, 125, 0.16); color: #495057; }
+
+    .mnt-cat-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
+
+    .modal-content > form { display: flex; flex-direction: column; flex: 1 1 auto; min-height: 0; }
+    .modal-content > form > .modal-body { flex: 1 1 auto; min-height: 0; overflow-y: auto; }
+
+    .mnt-title-cell { max-width: 320px; }
+    .mnt-equipment-cell { max-width: 240px; }
+    .mnt-freq-cell { max-width: 190px; }
+    .mnt-person-cell { max-width: 150px; }
+    .mnt-name-cell { max-width: 300px; }
+    .mnt-name-cell .mnt-title-clamp {
+      display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
+    }
+    .mnt-title-clamp { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; word-break: break-word; min-width: 0; }
+    .mnt-equipment-cell .mnt-title-clamp { flex: 1 1 auto; }
+
+    /* Mobile-first cards; the table appears from xl (1200px) upwards */
+    .mnt-item-card { background: #fff; border: 1px solid var(--mnt-card-border); border-left: 5px solid var(--row-color, #e9ecef); border-radius: 0.6rem; padding: 0.85rem 0.95rem; margin-bottom: 0.6rem; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04); }
+    .mnt-item-card .ic-title { font-weight: 700; color: var(--mnt-heading); font-size: 0.95rem; word-break: break-word; }
+    .mnt-item-card .ic-meta { font-size: 0.8rem; color: #6c757d; margin-top: 0.3rem; }
+    .mnt-item-card .ic-meta strong { color: var(--mnt-heading); font-weight: 600; }
+    .mnt-item-card .ic-actions { display: flex; gap: 0.4rem; justify-content: flex-end; margin-top: 0.6rem; }
+
+    @media (min-width: 768px) {
+      .d-xl-none > .mnt-item-card { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; column-gap: 1rem; }
+      .d-xl-none > .mnt-item-card > :not(.ic-actions) { grid-column: 1; }
+      .d-xl-none > .mnt-item-card > .ic-actions { grid-column: 2; grid-row: 1 / -1; margin-top: 0; }
+    }
+
+    .mnt-pager { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem 1.25rem; padding: 0.85rem 0.25rem 0.25rem; font-size: 0.85rem; }
+    .mnt-pager-info { color: #6c757d; }
+    .mnt-pager-info strong { color: var(--mnt-heading); }
+    .mnt-pager-per { display: flex; align-items: center; gap: 0.35rem; }
+    .mnt-pager-pages { display: flex; align-items: center; gap: 0.25rem; margin-left: auto; }
+    .mnt-pager-link { display: inline-flex; align-items: center; justify-content: center; min-width: 2rem; height: 2rem; padding: 0 0.5rem; border: 1px solid var(--mnt-card-border); border-radius: 0.45rem; background: #fff; color: var(--mnt-heading); text-decoration: none; }
+    .mnt-pager-link:hover { border-color: #2f7d8f; color: #2f7d8f; }
+    .mnt-pager-link.is-current { background: #2f7d8f; border-color: #2f7d8f; color: #fff; font-weight: 700; }
+    .mnt-pager-link.is-disabled { opacity: 0.4; pointer-events: none; }
+    .mnt-pager-gap { padding: 0 0.15rem; color: #adb5bd; }
+    @media (max-width: 575.98px) {
+      .mnt-pager-pages { margin-left: 0; width: 100%; justify-content: center; }
+    }
+
+    .mnt-thumb { width: 46px; height: 46px; border-radius: 0.45rem; object-fit: cover; border: 1px solid var(--mnt-card-border); background: #f6f9fa; }
+    .mnt-thumb-placeholder { display: inline-flex; align-items: center; justify-content: center; color: #adb5bd; font-size: 1.1rem; }
+
+    .empty-state { text-align: center; padding: 3rem 1rem; color: #6c757d; }
+    .empty-state i { font-size: 3rem; opacity: 0.3; margin-bottom: 1rem; display: block; }
+
+    .mnt-filter-bar { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 1rem; }
+    .mnt-filter-bar .form-select, .mnt-filter-bar .form-control { min-width: 150px; flex: 1 1 150px; max-width: 100%; }
+
+    .mnt-section-title { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: #8a9aa0; margin-bottom: 0.5rem; }
+    .mnt-kv { display: flex; gap: 0.5rem; padding: 0.35rem 0; border-bottom: 1px dashed #eceff1; font-size: 0.88rem; }
+    .mnt-kv:last-child { border-bottom: none; }
+    .mnt-kv dt { flex: 0 0 42%; color: #6c757d; font-weight: 500; margin: 0; }
+    .mnt-kv dd { flex: 1; margin: 0; color: var(--mnt-heading); font-weight: 600; word-break: break-word; }
+
+    .mnt-photo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 0.6rem; }
+    .mnt-photo-item { position: relative; border-radius: 0.5rem; overflow: hidden; border: 1px solid var(--mnt-card-border); aspect-ratio: 1; }
+    .mnt-photo-item img { width: 100%; height: 100%; object-fit: cover; display: block; }
+    .mnt-photo-item .photo-tools { position: absolute; inset: auto 0 0 0; display: flex; gap: 0.25rem; justify-content: center; padding: 0.25rem; background: rgba(0, 0, 0, 0.45); opacity: 0; transition: opacity 0.15s; }
+    .mnt-photo-item:hover .photo-tools { opacity: 1; }
+    .mnt-photo-item .photo-tools button { border: none; background: transparent; color: #fff; font-size: 0.8rem; padding: 0.1rem 0.35rem; }
+    .mnt-photo-item.is-cover { border-color: var(--mnt-primary); box-shadow: 0 0 0 2px rgba(47, 125, 143, 0.25); }
+
+    .mnt-file-row { display: flex; align-items: center; gap: 0.6rem; padding: 0.5rem 0; border-bottom: 1px solid #f1f4f5; font-size: 0.88rem; }
+    .mnt-file-row:last-child { border-bottom: none; }
+    .mnt-file-row .file-name { flex: 1; word-break: break-all; }
+
+    /* Signature pad (tablet) */
+    .mnt-signature-wrap { border: 1px dashed var(--mnt-card-border); border-radius: 0.5rem; background: #fcfdfd; position: relative; }
+    .mnt-signature-wrap canvas { width: 100%; height: 160px; display: block; touch-action: none; border-radius: 0.5rem; }
+
+    .mnt-timeline { position: relative; padding-left: 1.25rem; }
+    .mnt-timeline::before { content: ''; position: absolute; left: 6px; top: 4px; bottom: 4px; width: 2px; background: #e6eef0; }
+    .mnt-timeline-item { position: relative; padding-bottom: 0.9rem; }
+    .mnt-timeline-item::before { content: ''; position: absolute; left: -1.25rem; top: 0.35rem; width: 10px; height: 10px; border-radius: 50%; background: var(--mnt-primary); box-shadow: 0 0 0 3px #fff; }
+    .mnt-timeline-item .tl-date { font-size: 0.75rem; color: #8a9aa0; font-weight: 600; }
+    .mnt-timeline-item .tl-body { font-size: 0.88rem; color: var(--mnt-heading); }
+
+    @media (max-width: 575.98px) {
+        .mnt-card .card-header { flex-direction: column; gap: 0.75rem; align-items: flex-start !important; }
+        .header-actions { width: 100%; }
+        .header-actions .btn { width: 100%; justify-content: center; }
+    }
+</style>

public/userarea/manutenzioni/include/pagination.php

@@ -0,0 +1,95 @@
+<?php
+
+/**
+ * Pager shared by the registry and the maintenance list.
+ *
+ * Both lists used to print every row at once — 101 pieces of equipment and 126
+ * maintenance tasks, each rendered twice (cards + table), which on a tablet
+ * came out as a page some 20 000px tall.
+ *
+ * Usage (before including):
+ *   $mntPagerUrl   = 'manutenzioni/index.php';  // path, relative to <base href>
+ *   $mntPagerPage  = 3;    // current page, 1-based
+ *   $mntPagerPages = 7;    // number of pages
+ *   $mntPagerTotal = 163;  // rows matching the current filters
+ *   $mntPagerPer   = 25;   // rows per page
+ */
+
+$mntPagerPages = max(1, (int)($mntPagerPages ?? 1));
+$mntPagerPage = min(max(1, (int)($mntPagerPage ?? 1)), $mntPagerPages);
+$mntPagerTotal = (int)($mntPagerTotal ?? 0);
+$mntPagerPer = max(1, (int)($mntPagerPer ?? 25));
+
+/** Keeps the active filters, drops page when it would be redundant. */
+$mntPagerLink = static function (int $page, ?int $per = null) use ($mntPagerUrl) {
+    $query = $_GET;
+    unset($query['page'], $query['per_page']);
+    if ($per !== null) {
+        $query['per_page'] = $per;
+    } elseif (isset($_GET['per_page'])) {
+        $query['per_page'] = $_GET['per_page'];
+    }
+    if ($page > 1) {
+        $query['page'] = $page;
+    }
+
+    return $mntPagerUrl . ($query ? '?' . http_build_query($query) : '');
+};
+
+$mntFirstRow = $mntPagerTotal ? (($mntPagerPage - 1) * $mntPagerPer) + 1 : 0;
+$mntLastRow = min($mntPagerPage * $mntPagerPer, $mntPagerTotal);
+
+// A window around the current page: with 40 pages, 40 links are noise.
+$mntWindowFrom = max(1, $mntPagerPage - 2);
+$mntWindowTo = min($mntPagerPages, $mntPagerPage + 2);
+?>
+<div class="mnt-pager" data-page="<?= $mntPagerPage ?>" data-pages="<?= $mntPagerPages ?>" data-total="<?= $mntPagerTotal ?>">
+    <div class="mnt-pager-info">
+        <?= $mntFirstRow ?>–<?= $mntLastRow ?> di <strong><?= $mntPagerTotal ?></strong>
+    </div>
+
+    <div class="mnt-pager-per">
+        <span class="text-muted">Per pagina:</span>
+        <?php foreach ([25, 50, 100] as $option): ?>
+            <?php if ($option === $mntPagerPer): ?>
+                <span class="mnt-pager-link is-current"><?= $option ?></span>
+            <?php else: ?>
+                <a class="mnt-pager-link" href="<?= mnt_h($mntPagerLink(1, $option)) ?>"><?= $option ?></a>
+            <?php endif; ?>
+        <?php endforeach; ?>
+    </div>
+
+    <?php if ($mntPagerPages > 1): ?>
+        <nav class="mnt-pager-pages" aria-label="Paginazione">
+            <?php if ($mntPagerPage > 1): ?>
+                <a class="mnt-pager-link btn-page-prev" rel="prev" href="<?= mnt_h($mntPagerLink($mntPagerPage - 1)) ?>" aria-label="Precedente">‹</a>
+            <?php else: ?>
+                <span class="mnt-pager-link is-disabled">‹</span>
+            <?php endif; ?>
+
+            <?php if ($mntWindowFrom > 1): ?>
+                <a class="mnt-pager-link" href="<?= mnt_h($mntPagerLink(1)) ?>">1</a>
+                <?php if ($mntWindowFrom > 2): ?><span class="mnt-pager-gap">…</span><?php endif; ?>
+            <?php endif; ?>
+
+            <?php for ($p = $mntWindowFrom; $p <= $mntWindowTo; $p++): ?>
+                <?php if ($p === $mntPagerPage): ?>
+                    <span class="mnt-pager-link is-current" aria-current="page"><?= $p ?></span>
+                <?php else: ?>
+                    <a class="mnt-pager-link" href="<?= mnt_h($mntPagerLink($p)) ?>"><?= $p ?></a>
+                <?php endif; ?>
+            <?php endfor; ?>
+
+            <?php if ($mntWindowTo < $mntPagerPages): ?>
+                <?php if ($mntWindowTo < $mntPagerPages - 1): ?><span class="mnt-pager-gap">…</span><?php endif; ?>
+                <a class="mnt-pager-link" href="<?= mnt_h($mntPagerLink($mntPagerPages)) ?>"><?= $mntPagerPages ?></a>
+            <?php endif; ?>
+
+            <?php if ($mntPagerPage < $mntPagerPages): ?>
+                <a class="mnt-pager-link btn-page-next" rel="next" href="<?= mnt_h($mntPagerLink($mntPagerPage + 1)) ?>" aria-label="Successiva">›</a>
+            <?php else: ?>
+                <span class="mnt-pager-link is-disabled">›</span>
+            <?php endif; ?>
+        </nav>
+    <?php endif; ?>
+</div>

public/userarea/manutenzioni/include/wrapper_open.php

@@ -0,0 +1,6 @@
+<div class="wrapper" id="appWrapper">
+    <script>
+        if (window.innerWidth > 1024) {
+            document.getElementById('appWrapper').classList.add('toggled');
+        }
+    </script>

public/userarea/manutenzioni/index.php

@@ -0,0 +1,432 @@
+<?php include(__DIR__ . '/../include/headscript.php'); ?>
+<?php
+require_once __DIR__ . '/include/functions.php';
+
+$pdo = mnt_pdo();
+
+if (!userCan('maintenance.equipment.view')) {
+    http_response_code(403);
+    exit('Permesso negato.');
+}
+
+$canManage = userCan('maintenance.manage');
+
+// ---------------------------------------------------------------- filters
+$filterSearch     = trim((string)($_GET['q'] ?? ''));
+$filterCategory   = isset($_GET['category']) && is_numeric($_GET['category']) ? (int)$_GET['category'] : null;
+$filterLine       = isset($_GET['line']) && is_numeric($_GET['line']) ? (int)$_GET['line'] : null;
+$filterDepartment = isset($_GET['department']) && is_numeric($_GET['department']) ? (int)$_GET['department'] : null;
+$filterStatus     = (string)($_GET['status'] ?? 'active');
+
+$where = [];
+$params = [];
+
+if ($filterSearch !== '') {
+    $where[] = "(e.name LIKE ? OR e.serial_number LIKE ? OR e.registration_number LIKE ? OR e.manufacturer LIKE ?)";
+    $like = '%' . $filterSearch . '%';
+    array_push($params, $like, $like, $like, $like);
+}
+if ($filterCategory) {
+    $where[] = "e.category_id = ?";
+    $params[] = $filterCategory;
+}
+if ($filterLine) {
+    $where[] = "e.line_id = ?";
+    $params[] = $filterLine;
+}
+if ($filterDepartment) {
+    $where[] = "e.department_id = ?";
+    $params[] = $filterDepartment;
+}
+if ($filterStatus !== '' && $filterStatus !== 'all') {
+    $where[] = "e.status = ?";
+    $params[] = $filterStatus;
+}
+
+$sql = "
+    SELECT e.*,
+        c.name AS category_name,
+        c.color AS category_color,
+        pl.name AS line_name,
+        pl.line_number,
+        d.name AS department_name,
+        cf.stored_name AS cover_stored,
+        (SELECT COUNT(*) FROM maint_maintenances m
+          WHERE m.equipment_id = e.id AND m.is_active = 1) AS maintenance_count,
+        (SELECT MIN(m.next_due_date) FROM maint_maintenances m
+          WHERE m.equipment_id = e.id AND m.is_active = 1 AND m.next_due_date IS NOT NULL) AS next_due_date
+    FROM inv_equipment e
+    LEFT JOIN inv_categories c ON c.id = e.category_id
+    LEFT JOIN production_lines pl ON pl.id = e.line_id
+    LEFT JOIN departments d ON d.id = e.department_id
+    LEFT JOIN inv_equipment_files cf ON cf.id = e.cover_file_id
+";
+
+$whereSql = $where ? ' WHERE ' . implode(' AND ', $where) : '';
+$sql .= $whereSql;
+$sql .= ' ORDER BY c.sort_order ASC, e.name ASC';
+
+// The filters only touch columns of inv_equipment, so counting needs no joins.
+$countStmt = $pdo->prepare('SELECT COUNT(*) FROM inv_equipment e' . $whereSql);
+$countStmt->execute($params);
+$totalEquipment = (int)$countStmt->fetchColumn();
+
+[$page, $perPage] = mnt_page_params();
+$totalPages = max(1, (int)ceil($totalEquipment / $perPage));
+$page = min($page, $totalPages);
+
+// Cast to int above, so interpolating here cannot carry anything but digits;
+// LIMIT/OFFSET placeholders would need PDO::ATTR_EMULATE_PREPARES off.
+$sql .= sprintf(' LIMIT %d OFFSET %d', $perPage, ($page - 1) * $perPage);
+
+$stmt = $pdo->prepare($sql);
+$stmt->execute($params);
+$equipment = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+$formData = mnt_form_data($pdo);
+$statuses = mnt_equipment_statuses();
+
+$MNT_TITLE = 'Registro attrezzature';
+?>
+<!doctype html>
+<html lang="it">
+
+<head>
+    <?php include __DIR__ . '/include/page_head.php'; ?>
+</head>
+
+<body>
+    <?php include __DIR__ . '/include/wrapper_open.php'; ?>
+        <?php include(__DIR__ . '/../include/navbar.php'); ?>
+        <?php include(__DIR__ . '/../include/topbar.php'); ?>
+
+        <div class="page-wrapper">
+            <div class="page-content">
+
+                <div class="card mnt-card">
+                    <div class="card-header d-flex align-items-center justify-content-between flex-wrap gap-2">
+                        <h5><i class="fa-solid fa-boxes-stacked me-2"></i>Registro attrezzature</h5>
+                        <div class="header-actions d-flex gap-2 flex-wrap">
+                            <a href="manutenzioni/maintenances.php" class="btn btn-mnt-outline d-inline-flex align-items-center gap-2">
+                                <i class="fa-solid fa-screwdriver-wrench"></i><span>Manutenzioni</span>
+                            </a>
+                            <?php if ($canManage): ?>
+                                <button class="btn btn-mnt-primary d-inline-flex align-items-center gap-2" id="btnAddEquipment">
+                                    <i class="fa-solid fa-plus"></i><span>Nuova attrezzatura</span>
+                                </button>
+                            <?php endif; ?>
+                        </div>
+                    </div>
+
+                    <div class="card-body">
+                        <form class="mnt-filter-bar" method="get" id="filterForm">
+                            <input type="text" class="form-control" name="q" placeholder="Cerca nome, matricola, seriale…"
+                                value="<?= mnt_h($filterSearch) ?>">
+
+                            <select class="form-select" name="category">
+                                <option value="">Tutte le categorie</option>
+                                <?php foreach ($formData['categories'] as $category): ?>
+                                    <option value="<?= (int)$category['id'] ?>" <?= $filterCategory === (int)$category['id'] ? 'selected' : '' ?>>
+                                        <?= mnt_h($category['name']) ?>
+                                    </option>
+                                <?php endforeach; ?>
+                            </select>
+
+                            <select class="form-select" name="line">
+                                <option value="">Tutte le linee</option>
+                                <?php foreach ($formData['lines'] as $line): ?>
+                                    <option value="<?= (int)$line['id'] ?>" <?= $filterLine === (int)$line['id'] ? 'selected' : '' ?>>
+                                        Linea <?= (int)$line['line_number'] ?> — <?= mnt_h($line['name']) ?>
+                                    </option>
+                                <?php endforeach; ?>
+                            </select>
+
+                            <select class="form-select" name="department">
+                                <option value="">Tutti i reparti</option>
+                                <?php foreach ($formData['departments'] as $department): ?>
+                                    <option value="<?= (int)$department['id'] ?>" <?= $filterDepartment === (int)$department['id'] ? 'selected' : '' ?>>
+                                        <?= mnt_h($department['name']) ?>
+                                    </option>
+                                <?php endforeach; ?>
+                            </select>
+
+                            <select class="form-select" name="status">
+                                <option value="all" <?= $filterStatus === 'all' ? 'selected' : '' ?>>Tutti gli stati</option>
+                                <?php foreach ($statuses as $value => $label): ?>
+                                    <option value="<?= mnt_h($value) ?>" <?= $filterStatus === $value ? 'selected' : '' ?>>
+                                        <?= mnt_h($label) ?>
+                                    </option>
+                                <?php endforeach; ?>
+                            </select>
+
+                            <?php if ($perPage !== 25): ?>
+                                <input type="hidden" name="per_page" value="<?= (int)$perPage ?>">
+                            <?php endif; ?>
+
+                            <!-- Every control applies itself, so there is no «Filtra» button to
+                                 press. This one stays only so that Enter in the search box
+                                 submits, and so the bar still works without JavaScript. -->
+                            <button type="submit" class="visually-hidden">Filtra</button>
+
+                            <a href="manutenzioni/index.php" class="btn btn-mnt-outline btn-reset-filters d-inline-flex align-items-center gap-2">
+                                <i class="fa-solid fa-xmark"></i><span>Azzera filtri</span>
+                            </a>
+                        </form>
+
+                        <?php if (!$equipment): ?>
+                            <div class="empty-state">
+                                <i class="fa-solid fa-boxes-stacked"></i>
+                                <p>Nessuna attrezzatura trovata con questi filtri.</p>
+                            </div>
+                        <?php else: ?>
+                            <div id="equipmentList">
+                                <!-- CARD -->
+                                <div class="d-xl-none">
+                                    <?php foreach ($equipment as $item): ?>
+                                        <?php
+                                        $state = mnt_due_state($item['next_due_date']);
+                                        // Qui la riga aggrega piu' manutenzioni: «nessuna data» non
+                                        // significa «al bisogno», quindi l'etichetta resta neutra.
+                                        $badge = $state === 'none'
+                                            ? ['label' => 'Senza scadenza', 'class' => 'mnt-badge-none']
+                                            : mnt_due_badge($state);
+                                        ?>
+                                        <div class="mnt-item-card" data-id="<?= (int)$item['id'] ?>"
+                                            style="--row-color: <?= mnt_h($item['category_color'] ?? '#e9ecef') ?>">
+                                            <div class="d-flex gap-2 align-items-start">
+                                                <?php if (!empty($item['cover_stored'])): ?>
+                                                    <img class="mnt-thumb" src="manutenzioni/ajax/download_file.php?scope=equipment&id=<?= (int)$item['cover_file_id'] ?>" alt="">
+                                                <?php else: ?>
+                                                    <span class="mnt-thumb mnt-thumb-placeholder"><i class="fa-solid fa-gear"></i></span>
+                                                <?php endif; ?>
+                                                <div class="flex-grow-1">
+                                                    <div class="ic-title">
+                                                        <?= mnt_h($item['name']) ?>
+                                                        <?php if ($item['status'] !== 'active'): ?>
+                                                            <span class="mnt-badge mnt-badge-status-<?= mnt_h($item['status']) ?>">
+                                                                <?= mnt_h($statuses[$item['status']] ?? $item['status']) ?>
+                                                            </span>
+                                                        <?php endif; ?>
+                                                    </div>
+                                                    <div class="ic-meta">
+                                                        <?= mnt_h($item['category_name'] ?? 'Senza categoria') ?>
+                                                        <?php if ($item['line_name']): ?>
+                                                            · Linea <?= (int)$item['line_number'] ?>
+                                                        <?php endif; ?>
+                                                    </div>
+                                                    <div class="ic-meta">
+                                                        Manutenzioni: <strong><?= (int)$item["maintenance_count"] ?></strong> attive
+                                                        <?php if ($item['maintenance_count'] > 0): ?>
+                                                            · <span class="mnt-badge <?= $badge['class'] ?>"><?= $badge['label'] ?></span>
+                                                        <?php endif; ?>
+                                                    </div>
+                                                </div>
+                                            </div>
+                                            <div class="ic-actions">
+                                                <a class="btn-action btn-action-view" title="Apri scheda"
+                                                    href="manutenzioni/equipment.php?id=<?= (int)$item['id'] ?>">
+                                                    <i class="fa-solid fa-eye"></i>
+                                                </a>
+                                                <?php if ($canManage): ?>
+                                                    <button class="btn-action btn-action-edit btn-edit" title="Modifica"><i class="fa-solid fa-pen"></i></button>
+                                                    <button class="btn-action btn-action-delete btn-delete"
+                                                        title="Elimina"
+                                                        data-name="<?= mnt_h($item['name']) ?>"
+                                                        data-maintenances="<?= (int)$item['maintenance_count'] ?>">
+                                                        <i class="fa-solid fa-trash"></i>
+                                                    </button>
+                                                <?php endif; ?>
+                                            </div>
+                                        </div>
+                                    <?php endforeach; ?>
+                                </div>
+
+                                <!-- DESKTOP -->
+                                <!-- Table only from 1200px up: below that the 8 columns force
+                                     horizontal scrolling, which is unusable on a tablet. -->
+                                <div class="d-none d-xl-block table-responsive">
+                                    <table class="table table-hover align-middle mb-0">
+                                        <thead>
+                                            <tr>
+                                                <th style="width:60px"></th>
+                                                <th class="mnt-name-cell">Nome</th>
+                                                <th>Categoria</th>
+                                                <th>Matricola / Seriale</th>
+                                                <th>Ubicazione</th>
+                                                <th class="text-center">Stato</th>
+                                                <th class="text-center">Manutenzioni</th>
+                                                <th class="text-center" style="width:140px">Azioni</th>
+                                            </tr>
+                                        </thead>
+                                        <tbody>
+                                            <?php foreach ($equipment as $item): ?>
+                                                <?php
+                                                $state = mnt_due_state($item['next_due_date']);
+                                                // Qui la riga aggrega piu' manutenzioni: «nessuna data» non
+                                        // significa «al bisogno», quindi l'etichetta resta neutra.
+                                        $badge = $state === 'none'
+                                            ? ['label' => 'Senza scadenza', 'class' => 'mnt-badge-none']
+                                            : mnt_due_badge($state);
+                                                $statusKey = (string)$item['status'];
+                                                ?>
+                                                <tr data-id="<?= (int)$item['id'] ?>">
+                                                    <td>
+                                                        <?php if (!empty($item['cover_stored'])): ?>
+                                                            <img class="mnt-thumb" src="manutenzioni/ajax/download_file.php?scope=equipment&id=<?= (int)$item['cover_file_id'] ?>" alt="">
+                                                        <?php else: ?>
+                                                            <span class="mnt-thumb mnt-thumb-placeholder"><i class="fa-solid fa-gear"></i></span>
+                                                        <?php endif; ?>
+                                                    </td>
+                                                    <td class="mnt-name-cell">
+                                                        <div class="fw-semibold mnt-title-clamp" style="color:var(--mnt-heading)"
+                                                            title="<?= mnt_h($item['name']) ?>"><?= mnt_h($item['name']) ?></div>
+                                                        <?php if ($item['manufacturer']): ?>
+                                                            <div class="small text-muted mnt-title-clamp"
+                                                                title="<?= mnt_h($item['manufacturer']) ?>"><?= mnt_h($item['manufacturer']) ?></div>
+                                                        <?php endif; ?>
+                                                    </td>
+                                                    <td>
+                                                        <span class="d-inline-flex align-items-center gap-2">
+                                                            <span class="mnt-cat-dot" style="background: <?= mnt_h($item['category_color'] ?? '#adb5bd') ?>"></span>
+                                                            <span><?= mnt_h($item['category_name'] ?? '—') ?></span>
+                                                        </span>
+                                                        <?php if ($item['line_name']): ?>
+                                                            <div class="small text-muted">Linea <?= (int)$item['line_number'] ?> — <?= mnt_h($item['line_name']) ?></div>
+                                                        <?php endif; ?>
+                                                    </td>
+                                                    <td class="small">
+                                                        <?= mnt_h($item['registration_number'] ?: '—') ?>
+                                                        <?php if ($item['serial_number']): ?>
+                                                            <div class="text-muted"><?= mnt_h($item['serial_number']) ?></div>
+                                                        <?php endif; ?>
+                                                    </td>
+                                                    <td class="small">
+                                                        <?= mnt_h($item['department_name'] ?: '—') ?>
+                                                        <?php if ($item['location']): ?>
+                                                            <div class="text-muted"><?= mnt_h($item['location']) ?></div>
+                                                        <?php endif; ?>
+                                                    </td>
+                                                    <td class="text-center">
+                                                        <span class="mnt-badge mnt-badge-status-<?= mnt_h($statusKey) ?>">
+                                                            <?= mnt_h($statuses[$statusKey] ?? $statusKey) ?>
+                                                        </span>
+                                                    </td>
+                                                    <td class="text-center">
+                                                        <?php if ((int)$item['maintenance_count'] === 0): ?>
+                                                            <span class="text-muted small">—</span>
+                                                        <?php else: ?>
+                                                            <span class="mnt-badge <?= $badge['class'] ?>"><?= $badge['label'] ?></span>
+                                                            <div class="small text-muted mt-1"><?= (int)$item['maintenance_count'] ?> attive</div>
+                                                        <?php endif; ?>
+                                                    </td>
+                                                    <td class="text-center">
+                                                        <div class="d-inline-flex gap-1">
+                                                            <a class="btn-action btn-action-view" title="Apri scheda"
+                                                                href="manutenzioni/equipment.php?id=<?= (int)$item['id'] ?>">
+                                                                <i class="fa-solid fa-eye"></i>
+                                                            </a>
+                                                            <?php if ($canManage): ?>
+                                                                <button class="btn-action btn-action-edit btn-edit" title="Modifica"><i class="fa-solid fa-pen"></i></button>
+                                                                <button class="btn-action btn-action-delete btn-delete"
+                                                                    title="Elimina"
+                                                                    data-name="<?= mnt_h($item['name']) ?>"
+                                                                    data-maintenances="<?= (int)$item['maintenance_count'] ?>">
+                                                                    <i class="fa-solid fa-trash"></i>
+                                                                </button>
+                                                            <?php endif; ?>
+                                                        </div>
+                                                    </td>
+                                                </tr>
+                                            <?php endforeach; ?>
+                                        </tbody>
+                                    </table>
+                                </div>
+                            </div>
+
+                            <?php
+                            $mntPagerUrl = 'manutenzioni/index.php';
+                            $mntPagerPage = $page;
+                            $mntPagerPages = $totalPages;
+                            $mntPagerTotal = $totalEquipment;
+                            $mntPagerPer = $perPage;
+                            include __DIR__ . '/include/pagination.php';
+                            ?>
+                        <?php endif; ?>
+                    </div>
+                </div>
+
+            </div>
+        </div>
+        <?php include(__DIR__ . '/../include/footer.php'); ?>
+    </div>
+
+    <?php if ($canManage): ?>
+        <?php include __DIR__ . '/include/equipment_modal.php'; ?>
+    <?php endif; ?>
+
+    <?php include(__DIR__ . '/../jsinclude.php'); ?>
+    <script>
+        $(function () {
+            $('#filterForm select').on('change', function () { $('#filterForm').submit(); });
+
+            // The search box applies itself too, so the whole bar behaves the
+            // same way; the pause keeps it from reloading on every keystroke.
+            let mntSearchTimer = null;
+            $('#filterForm input[name=q]').on('input', function () {
+                clearTimeout(mntSearchTimer);
+                mntSearchTimer = setTimeout(function () { $('#filterForm').submit(); }, 500);
+            });
+
+            // The reload lands with the box empty of focus, mid-word: put the
+            // caret back where it was so typing can simply continue.
+            const mntSearch = document.querySelector('#filterForm input[name=q]');
+            if (mntSearch && mntSearch.value) {
+                mntSearch.focus();
+                mntSearch.setSelectionRange(mntSearch.value.length, mntSearch.value.length);
+            }
+
+            <?php if ($canManage): ?>
+            $('#btnAddEquipment').on('click', function () { mntOpenEquipmentModal(null); });
+
+            $('#equipmentList').on('click', '.btn-edit', function () {
+                const id = $(this).closest('[data-id]').data('id');
+                $.getJSON('manutenzioni/ajax/get_equipment.php', { id: id })
+                    .done(res => {
+                        if (res.success) { mntOpenEquipmentModal(res.equipment); }
+                        else { Swal.fire({ icon: 'error', title: 'Errore', text: res.message }); }
+                    })
+                    .fail(() => Swal.fire({ icon: 'error', title: 'Errore di rete' }));
+            });
+
+            $('#equipmentList').on('click', '.btn-delete', function () {
+                const $btn = $(this);
+                const id = $btn.closest('[data-id]').data('id');
+                const name = $btn.data('name');
+                const maintenances = parseInt($btn.data('maintenances') || 0, 10);
+
+                Swal.fire({
+                    title: `Eliminare "${name}"?`,
+                    html: maintenances > 0
+                        ? `<p>Verranno eliminate anche <strong>${maintenances}</strong> manutenzioni e tutto lo storico interventi.</p>`
+                        : '<p>L\'operazione non è reversibile.</p>',
+                    icon: 'warning',
+                    showCancelButton: true,
+                    confirmButtonText: 'Elimina',
+                    cancelButtonText: 'Annulla',
+                    confirmButtonColor: '#dc3545'
+                }).then(r => {
+                    if (!r.isConfirmed) return;
+                    $.post('manutenzioni/ajax/delete_equipment.php', { id: id })
+                        .done(res => {
+                            if (res.success) { location.reload(); }
+                            else { Swal.fire({ icon: 'error', title: 'Errore', text: res.message }); }
+                        })
+                        .fail(() => Swal.fire({ icon: 'error', title: 'Errore di rete' }));
+                });
+            });
+            <?php endif; ?>
+        });
+    </script>
+</body>
+
+</html>

public/userarea/manutenzioni/maintenances.php

@@ -0,0 +1,370 @@
+<?php include(__DIR__ . '/../include/headscript.php'); ?>
+<?php
+require_once __DIR__ . '/include/functions.php';
+
+$pdo = mnt_pdo();
+
+if (!userCan('maintenance.maintenances.view')) {
+    http_response_code(403);
+    exit('Permesso negato.');
+}
+
+$canManage = userCan('maintenance.manage');
+
+// ---------------------------------------------------------------- filters
+$filterType     = (string)($_GET['type'] ?? '');
+$filterState    = (string)($_GET['state'] ?? '');
+$filterCategory = isset($_GET['category']) && is_numeric($_GET['category']) ? (int)$_GET['category'] : null;
+$filterCritical = !empty($_GET['critical']);
+$filterMine     = !empty($_GET['mine']);
+
+$where = ["m.is_active = 1", "e.status = 'active'"];
+$params = [];
+
+if (array_key_exists($filterType, mnt_intervention_types())) {
+    $where[] = "m.intervention_type = ?";
+    $params[] = $filterType;
+}
+if ($filterCategory) {
+    $where[] = "e.category_id = ?";
+    $params[] = $filterCategory;
+}
+if ($filterCritical) {
+    $where[] = "m.is_critical = 1";
+}
+
+// "Assigned to me" resolves the logged-in user to their employee record
+if ($filterMine) {
+    $stmt = $pdo->prepare("SELECT id FROM employees WHERE auth_user_id = ? LIMIT 1");
+    $stmt->execute([(int)$iduserlogin]);
+    $myEmployeeId = (int)$stmt->fetchColumn();
+
+    if ($myEmployeeId) {
+        $where[] = "(m.assignee_employee_id = ? OR m.supervisor_employee_id = ?)";
+        $params[] = $myEmployeeId;
+        $params[] = $myEmployeeId;
+    } else {
+        $filterMine = false;
+    }
+}
+
+$stmt = $pdo->prepare("
+    SELECT m.*,
+        e.id AS equipment_id, e.name AS equipment_name,
+        c.name AS category_name, c.color AS category_color,
+        CONCAT(a.first_name, ' ', a.last_name) AS assignee_name,
+        CONCAT(s.first_name, ' ', s.last_name) AS supervisor_name,
+        sup.supplier_name
+    FROM maint_maintenances m
+    INNER JOIN inv_equipment e ON e.id = m.equipment_id
+    LEFT JOIN inv_categories c ON c.id = e.category_id
+    LEFT JOIN employees a ON a.id = m.assignee_employee_id
+    LEFT JOIN employees s ON s.id = m.supervisor_employee_id
+    LEFT JOIN suppliers sup ON sup.idsupplier = m.supplier_id
+    WHERE " . implode(' AND ', $where) . "
+    ORDER BY (m.next_due_date IS NULL) ASC, m.next_due_date ASC, e.name ASC
+");
+$stmt->execute($params);
+$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+// The schedule state depends on each maintenance's own lead time, so it is
+// computed in PHP rather than in SQL.
+$maintenances = [];
+$counters = ['overdue' => 0, 'due_soon' => 0, 'ok' => 0, 'none' => 0];
+
+foreach ($rows as $row) {
+    $state = mnt_due_state($row['next_due_date'], (int)$row['alert_days']);
+    $counters[$state]++;
+
+    if ($filterState !== '' && $filterState !== $state) {
+        continue;
+    }
+
+    $row['state'] = $state;
+    $maintenances[] = $row;
+}
+
+// Paging happens here and not in SQL: the state of each task and the four
+// counter tiles are computed in PHP over the whole result set, so a LIMIT in
+// the query would leave the tiles counting one page instead of everything.
+[$page, $perPage] = mnt_page_params();
+$totalMaintenances = count($maintenances);
+$totalPages = max(1, (int)ceil($totalMaintenances / $perPage));
+$page = min($page, $totalPages);
+$maintenances = array_slice($maintenances, ($page - 1) * $perPage, $perPage);
+
+$formData = mnt_form_data($pdo);
+$typeLabels = mnt_intervention_types();
+$executionLabels = mnt_execution_types();
+
+$MNT_TITLE = 'Manutenzioni';
+?>
+<!doctype html>
+<html lang="it">
+
+<head>
+    <?php include __DIR__ . '/include/page_head.php'; ?>
+</head>
+
+<body>
+    <?php include __DIR__ . '/include/wrapper_open.php'; ?>
+        <?php include(__DIR__ . '/../include/navbar.php'); ?>
+        <?php include(__DIR__ . '/../include/topbar.php'); ?>
+
+        <div class="page-wrapper">
+            <div class="page-content">
+
+                <div class="card mnt-card">
+                    <div class="card-header d-flex align-items-center justify-content-between flex-wrap gap-2">
+                        <h5><i class="fa-solid fa-screwdriver-wrench me-2"></i>Manutenzioni</h5>
+                        <div class="header-actions d-flex gap-2 flex-wrap">
+                            <a href="manutenzioni/calendar.php" class="btn btn-mnt-outline d-inline-flex align-items-center gap-2">
+                                <i class="fa-solid fa-calendar-days"></i><span>Calendario</span>
+                            </a>
+                            <a href="manutenzioni/index.php" class="btn btn-mnt-outline d-inline-flex align-items-center gap-2">
+                                <i class="fa-solid fa-boxes-stacked"></i><span>Registro</span>
+                            </a>
+                        </div>
+                    </div>
+
+                    <div class="card-body">
+                        <div class="row g-2 mb-3">
+                            <?php
+                            $tiles = [
+                                ['key' => 'overdue',  'label' => 'Scadute',     'class' => 'mnt-badge-overdue'],
+                                ['key' => 'due_soon', 'label' => 'In scadenza', 'class' => 'mnt-badge-soon'],
+                                ['key' => 'ok',       'label' => 'In regola',   'class' => 'mnt-badge-ok'],
+                                ['key' => 'none',     'label' => 'Senza scadenza', 'class' => 'mnt-badge-none'],
+                            ];
+                            ?>
+                            <?php foreach ($tiles as $tile): ?>
+                                <div class="col-6 col-md-3">
+                                    <?php
+                                    // Percorso completo, non "?...": con <base href="/userarea/">
+                                    // un href di sola query porterebbe alla dashboard del template.
+                                    // page is dropped: changing the filter changes the result
+                                    // set, and staying on page 3 of the previous one is nonsense.
+                                    $tileQuery = $_GET;
+                                    unset($tileQuery['page']);
+                                    $tileUrl = 'manutenzioni/maintenances.php?' . http_build_query(
+                                        array_merge($tileQuery, ['state' => $filterState === $tile['key'] ? '' : $tile['key']])
+                                    );
+                                    ?>
+                                    <a class="d-block text-decoration-none" href="<?= mnt_h($tileUrl) ?>">
+                                        <div class="mnt-item-card mb-0 <?= $filterState === $tile['key'] ? 'border-2' : '' ?>"
+                                            style="--row-color: <?= $tile['key'] === 'overdue' ? '#dc3545' : ($tile['key'] === 'due_soon' ? '#f0a202' : ($tile['key'] === 'ok' ? '#198754' : '#adb5bd')) ?>">
+                                            <div class="ic-title" style="font-size:1.4rem"><?= (int)$counters[$tile['key']] ?></div>
+                                            <div class="ic-meta"><?= $tile['label'] ?></div>
+                                        </div>
+                                    </a>
+                                </div>
+                            <?php endforeach; ?>
+                        </div>
+
+                        <form class="mnt-filter-bar" method="get" id="filterForm">
+                            <input type="hidden" name="state" value="<?= mnt_h($filterState) ?>">
+
+                            <select class="form-select" name="type">
+                                <option value="">Programmate e straordinarie</option>
+                                <?php foreach ($typeLabels as $value => $label): ?>
+                                    <option value="<?= mnt_h($value) ?>" <?= $filterType === $value ? 'selected' : '' ?>>
+                                        Solo <?= mnt_h(mb_strtolower($label)) ?>
+                                    </option>
+                                <?php endforeach; ?>
+                            </select>
+
+                            <select class="form-select" name="category">
+                                <option value="">Tutte le categorie</option>
+                                <?php foreach ($formData['categories'] as $category): ?>
+                                    <option value="<?= (int)$category['id'] ?>" <?= $filterCategory === (int)$category['id'] ? 'selected' : '' ?>>
+                                        <?= mnt_h($category['name']) ?>
+                                    </option>
+                                <?php endforeach; ?>
+                            </select>
+
+                            <div class="form-check d-flex align-items-center gap-2 ms-1">
+                                <input class="form-check-input mt-0" type="checkbox" name="critical" value="1" id="fCritical" <?= $filterCritical ? 'checked' : '' ?>>
+                                <label class="form-check-label" for="fCritical">Solo critiche</label>
+                            </div>
+
+                            <div class="form-check d-flex align-items-center gap-2 ms-1">
+                                <input class="form-check-input mt-0" type="checkbox" name="mine" value="1" id="fMine" <?= $filterMine ? 'checked' : '' ?>>
+                                <label class="form-check-label" for="fMine">Assegnate a me</label>
+                            </div>
+
+                            <?php if ($perPage !== 25): ?>
+                                <input type="hidden" name="per_page" value="<?= (int)$perPage ?>">
+                            <?php endif; ?>
+
+                            <!-- No «Filtra» button: selects and checkboxes all submit on change,
+                                 so it never had anything left to do. Kept hidden only as the
+                                 no-JavaScript fallback. -->
+                            <button type="submit" class="visually-hidden">Filtra</button>
+
+                            <a href="manutenzioni/maintenances.php" class="btn btn-mnt-outline btn-reset-filters d-inline-flex align-items-center gap-2">
+                                <i class="fa-solid fa-xmark"></i><span>Azzera filtri</span>
+                            </a>
+                        </form>
+
+                        <?php if (!$maintenances): ?>
+                            <div class="empty-state">
+                                <i class="fa-solid fa-screwdriver-wrench"></i>
+                                <p>Nessuna manutenzione con questi filtri.</p>
+                            </div>
+                        <?php else: ?>
+                            <div id="maintenanceList">
+                                <!-- CARD -->
+                                <div class="d-xl-none">
+                                    <?php foreach ($maintenances as $maintenance): ?>
+                                        <?php $badge = mnt_due_badge($maintenance['state'], $maintenance['frequency_unit']); ?>
+                                        <div class="mnt-item-card" data-id="<?= (int)$maintenance['id'] ?>"
+                                            style="--row-color: <?= $maintenance['is_critical'] ? '#dc3545' : mnt_h($maintenance['category_color'] ?? '#e9ecef') ?>">
+                                            <div class="ic-title"><?= mnt_h($maintenance['equipment_name']) ?></div>
+                                            <div class="ic-meta">
+                                                <?php if ($maintenance['code']): ?><strong><?= mnt_h($maintenance['code']) ?></strong> · <?php endif; ?>
+                                                <?= mnt_h($maintenance['title']) ?>
+                                            </div>
+                                            <div class="ic-meta">
+                                                Prossimo: <strong><?= mnt_format_date($maintenance['next_due_date']) ?></strong>
+                                                <span class="mnt-badge <?= $badge['class'] ?> ms-1"><?= $badge['label'] ?></span>
+                                            </div>
+                                            <div class="ic-actions">
+                                                <a class="btn-action btn-action-view" href="manutenzioni/equipment.php?id=<?= (int)$maintenance['equipment_id'] ?>">
+                                                    <i class="fa-solid fa-eye"></i>
+                                                </a>
+                                                <?php if ($canManage): ?>
+                                                    <button class="btn-action btn-action-done btn-register" title="Registra intervento">
+                                                        <i class="fa-solid fa-check"></i>
+                                                    </button>
+                                                <?php endif; ?>
+                                            </div>
+                                        </div>
+                                    <?php endforeach; ?>
+                                </div>
+
+                                <!-- DESKTOP -->
+                                <!-- Table only from 1200px up: measured, the 6 columns need
+                                     ~1280px to fit, so on a tablet it only scrolls sideways. -->
+                                <div class="d-none d-xl-block table-responsive">
+                                    <table class="table table-hover align-middle mb-0">
+                                        <thead>
+                                            <tr>
+                                                <th class="mnt-equipment-cell">Attrezzatura</th>
+                                                <th>Manutenzione</th>
+                                                <th class="mnt-freq-cell">Frequenza</th>
+                                                <th class="mnt-person-cell">Incaricato</th>
+                                                <th class="text-center">Prossima</th>
+                                                <th class="text-center" style="width:130px">Azioni</th>
+                                            </tr>
+                                        </thead>
+                                        <tbody>
+                                            <?php foreach ($maintenances as $maintenance): ?>
+                                                <?php $badge = mnt_due_badge($maintenance['state'], $maintenance['frequency_unit']); ?>
+                                                <tr data-id="<?= (int)$maintenance['id'] ?>">
+                                                    <td class="mnt-equipment-cell">
+                                                        <span class="d-flex align-items-start gap-2">
+                                                            <span class="mnt-cat-dot mt-1" style="background: <?= mnt_h($maintenance['category_color'] ?? '#adb5bd') ?>"></span>
+                                                            <span class="fw-semibold mnt-title-clamp" style="color:var(--mnt-heading)"
+                                                                title="<?= mnt_h($maintenance['equipment_name']) ?>"><?= mnt_h($maintenance['equipment_name']) ?></span>
+                                                        </span>
+                                                        <div class="small text-muted"><?= mnt_h($maintenance['category_name'] ?? '') ?></div>
+                                                    </td>
+                                                    <td class="mnt-title-cell">
+                                                        <?php if ($maintenance['code']): ?>
+                                                            <span class="mnt-badge mnt-badge-soft me-1"><?= mnt_h($maintenance['code']) ?></span>
+                                                        <?php endif; ?>
+                                                        <?php if ($maintenance['is_critical']): ?>
+                                                            <span class="mnt-badge mnt-badge-critical ms-1">Critica</span>
+                                                        <?php endif; ?>
+                                                        <div class="mnt-title-clamp" title="<?= mnt_h($maintenance['title']) ?>">
+                                                            <?= mnt_h($maintenance['title']) ?>
+                                                        </div>
+                                                        <div class="small text-muted">
+                                                            <?= mnt_h($typeLabels[$maintenance['intervention_type']] ?? '') ?>
+                                                            · <?= mnt_h($executionLabels[$maintenance['execution_type']] ?? '') ?>
+                                                            <?php if ($maintenance['supplier_name']): ?>
+                                                                — <?= mnt_h($maintenance['supplier_name']) ?>
+                                                            <?php endif; ?>
+                                                        </div>
+                                                    </td>
+                                                    <td class="small mnt-freq-cell"><div class="mnt-title-clamp"><?= mnt_h(mnt_format_frequency(
+                                                            $maintenance['frequency_value'] !== null ? (int)$maintenance['frequency_value'] : null,
+                                                            $maintenance['frequency_unit'],
+                                                            $maintenance['frequency_note']
+                                                        )) ?></div></td>
+                                                    <td class="small mnt-person-cell">
+                                                        <?= mnt_h($maintenance['assignee_name'] ?: '—') ?>
+                                                        <?php if ($maintenance['supervisor_name']): ?>
+                                                            <div class="text-muted"><?= mnt_h($maintenance['supervisor_name']) ?></div>
+                                                        <?php endif; ?>
+                                                    </td>
+                                                    <td class="text-center">
+                                                        <div><?= mnt_format_date($maintenance['next_due_date']) ?></div>
+                                                        <span class="mnt-badge <?= $badge['class'] ?>"><?= $badge['label'] ?></span>
+                                                    </td>
+                                                    <td class="text-center">
+                                                        <div class="d-inline-flex gap-1">
+                                                            <a class="btn-action btn-action-view" title="Apri scheda"
+                                                                href="manutenzioni/equipment.php?id=<?= (int)$maintenance['equipment_id'] ?>">
+                                                                <i class="fa-solid fa-eye"></i>
+                                                            </a>
+                                                            <?php if ($canManage): ?>
+                                                                <button class="btn-action btn-action-done btn-register" title="Registra intervento">
+                                                                    <i class="fa-solid fa-check"></i>
+                                                                </button>
+                                                            <?php endif; ?>
+                                                        </div>
+                                                    </td>
+                                                </tr>
+                                            <?php endforeach; ?>
+                                        </tbody>
+                                    </table>
+                                </div>
+                            </div>
+
+                            <?php
+                            $mntPagerUrl = 'manutenzioni/maintenances.php';
+                            $mntPagerPage = $page;
+                            $mntPagerPages = $totalPages;
+                            $mntPagerTotal = $totalMaintenances;
+                            $mntPagerPer = $perPage;
+                            include __DIR__ . '/include/pagination.php';
+                            ?>
+                        <?php endif; ?>
+                    </div>
+                </div>
+
+            </div>
+        </div>
+        <?php include(__DIR__ . '/../include/footer.php'); ?>
+    </div>
+
+    <?php if ($canManage): ?>
+        <?php include __DIR__ . '/include/intervention_modal.php'; ?>
+    <?php endif; ?>
+
+    <?php include(__DIR__ . '/../jsinclude.php'); ?>
+    <script>
+        $(function () {
+            $('#filterForm select, #filterForm input[type=checkbox]').on('change', function () { $('#filterForm').submit(); });
+
+            <?php if ($canManage): ?>
+            $('#maintenanceList').on('click', '.btn-register', function () {
+                const id = $(this).closest('[data-id]').data('id');
+                $.getJSON('manutenzioni/ajax/get_maintenance.php', { id: id })
+                    .done(res => {
+                        if (!res.success) { Swal.fire({ icon: 'error', title: 'Errore', text: res.message }); return; }
+                        mntOpenInterventionModal(null, {
+                            id: res.maintenance.id,
+                            title: res.maintenance.title,
+                            equipment_name: res.maintenance.equipment_name,
+                            supplier_id: res.maintenance.supplier_id
+                        });
+                    });
+            });
+            <?php endif; ?>
+        });
+    </script>
+</body>
+
+</html>

public/userarea/manutenzioni/print.php

@@ -0,0 +1,263 @@
+<?php include(__DIR__ . '/../include/headscript.php'); ?>
+<?php
+require_once __DIR__ . '/include/functions.php';
+
+/**
+ * Printable maintenance sheet, laid out like the client's paper form
+ * "mod. 6.3-1": machine header, list of interventions with letter codes and
+ * frequency, then the log of performed interventions with operator + signature.
+ * Print to PDF from the browser.
+ */
+
+$pdo = mnt_pdo();
+
+if (!userCan('maintenance.equipment.view')) {
+    http_response_code(403);
+    exit('Permesso negato.');
+}
+
+$equipmentId = isset($_GET['id']) && is_numeric($_GET['id']) ? (int)$_GET['id'] : 0;
+
+$stmt = $pdo->prepare("
+    SELECT e.*, c.name AS category_name, pl.name AS line_name, pl.line_number, d.name AS department_name
+    FROM inv_equipment e
+    LEFT JOIN inv_categories c ON c.id = e.category_id
+    LEFT JOIN production_lines pl ON pl.id = e.line_id
+    LEFT JOIN departments d ON d.id = e.department_id
+    WHERE e.id = ?
+");
+$stmt->execute([$equipmentId]);
+$equipment = $stmt->fetch(PDO::FETCH_ASSOC);
+
+if (!$equipment) {
+    http_response_code(404);
+    exit('Attrezzatura non trovata.');
+}
+
+$stmt = $pdo->prepare("
+    SELECT m.*, sup.supplier_name,
+        CONCAT(a.first_name, ' ', a.last_name) AS assignee_name
+    FROM maint_maintenances m
+    LEFT JOIN suppliers sup ON sup.idsupplier = m.supplier_id
+    LEFT JOIN employees a ON a.id = m.assignee_employee_id
+    WHERE m.equipment_id = ? AND m.is_active = 1
+    ORDER BY m.code ASC, m.title ASC
+");
+$stmt->execute([$equipmentId]);
+$maintenances = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+$stmt = $pdo->prepare("
+    SELECT i.*, m.code AS maintenance_code, m.title AS maintenance_title,
+        CONCAT(e.first_name, ' ', e.last_name) AS operator_full_name,
+        sup.supplier_name
+    FROM maint_interventions i
+    INNER JOIN maint_maintenances m ON m.id = i.maintenance_id
+    LEFT JOIN employees e ON e.id = i.operator_employee_id
+    LEFT JOIN suppliers sup ON sup.idsupplier = i.supplier_id
+    WHERE i.equipment_id = ?
+    ORDER BY i.performed_at DESC, i.id DESC
+");
+$stmt->execute([$equipmentId]);
+$interventions = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+$statusLabels = mnt_lookup($pdo, 'maint_status', ['planned' => 'Pianificato', 'in_progress' => 'In corso', 'completed' => 'Completato']);
+$resultLabels = mnt_lookup($pdo, 'maint_result', []);
+$executionLabels = mnt_execution_types();
+?>
+<!doctype html>
+<html lang="it">
+
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <?php
+    // Must sit in <head>, before any relative URL on the page
+    $mntScriptName = $_SERVER['SCRIPT_NAME'] ?? '';
+    $mntPos = strpos($mntScriptName, '/userarea/');
+    $printBase = $mntPos !== false ? substr($mntScriptName, 0, $mntPos + strlen('/userarea/')) : '/userarea/';
+    ?>
+    <base href="<?= mnt_h($printBase) ?>">
+    <title>Scheda manutenzione — <?= mnt_h($equipment['name']) ?></title>
+    <style>
+        * { box-sizing: border-box; }
+        body { font-family: Arial, Helvetica, sans-serif; font-size: 11px; color: #000; margin: 0; padding: 18px; background: #fff; }
+        .sheet { max-width: 1000px; margin: 0 auto; }
+
+        .sheet-header { display: flex; justify-content: space-between; align-items: flex-start; border: 1px solid #000; padding: 8px 10px; }
+        .sheet-header h1 { font-size: 15px; margin: 0; text-transform: uppercase; letter-spacing: .02em; }
+        .sheet-header .form-ref { text-align: right; font-size: 10px; line-height: 1.5; }
+
+        .machine-row { border: 1px solid #000; border-top: none; padding: 8px 10px; }
+        .machine-row .label { font-weight: bold; text-transform: uppercase; }
+        .machine-meta { display: flex; flex-wrap: wrap; gap: 4px 22px; margin-top: 6px; font-size: 10.5px; }
+
+        table { width: 100%; border-collapse: collapse; margin-top: 14px; }
+        caption { text-align: left; font-weight: bold; text-transform: uppercase; font-size: 11.5px; padding: 6px 0; }
+        th, td { border: 1px solid #000; padding: 5px 6px; vertical-align: top; }
+        th { background: #ececec; text-transform: uppercase; font-size: 10px; text-align: left; }
+        .col-code { width: 60px; text-align: center; }
+        .col-freq { width: 190px; }
+        .col-date { width: 90px; }
+        .col-operator { width: 150px; }
+        .col-sign { width: 130px; }
+        .signature-img { max-height: 42px; max-width: 120px; display: block; }
+        .empty-row td { text-align: center; color: #666; font-style: italic; }
+
+        .toolbar { max-width: 1000px; margin: 0 auto 14px; display: flex; gap: 8px; justify-content: flex-end; }
+        .toolbar button, .toolbar a { font-family: inherit; font-size: 12px; padding: 7px 14px; border-radius: 5px; border: 1px solid #2f7d8f; background: #2f7d8f; color: #fff; cursor: pointer; text-decoration: none; }
+        .toolbar a { background: #fff; color: #2f7d8f; }
+
+        .footnote { margin-top: 14px; font-size: 9.5px; color: #444; }
+
+        @media print {
+            body { padding: 0; }
+            .toolbar { display: none; }
+            table { page-break-inside: auto; }
+            tr { page-break-inside: avoid; page-break-after: auto; }
+            thead { display: table-header-group; }
+        }
+    </style>
+</head>
+
+<body>
+    <div class="toolbar">
+        <a href="manutenzioni/equipment.php?id=<?= (int)$equipment['id'] ?>">← Torna alla scheda</a>
+        <button type="button" onclick="window.print()">Stampa / Salva PDF</button>
+    </div>
+
+    <div class="sheet">
+        <div class="sheet-header">
+            <h1>Scheda manutenzione</h1>
+            <div class="form-ref">
+                ZIBOGOMMA<br>
+                mod. 6.3-1<br>
+                Stampato il <?= date('d/m/Y') ?>
+            </div>
+        </div>
+
+        <div class="machine-row">
+            <span class="label">Macchina:</span>
+            <strong><?= mnt_h($equipment['name']) ?></strong>
+            <?php if ($equipment['manufacturer']): ?> — <?= mnt_h($equipment['manufacturer']) ?><?php endif; ?>
+            <?php if ($equipment['registration_number']): ?> — matricola <?= mnt_h($equipment['registration_number']) ?><?php endif; ?>
+
+            <div class="machine-meta">
+                <span><strong>Categoria:</strong> <?= mnt_h($equipment['category_name'] ?: '—') ?></span>
+                <?php if ($equipment['line_name']): ?>
+                    <span><strong>Linea:</strong> <?= (int)$equipment['line_number'] ?> — <?= mnt_h($equipment['line_name']) ?></span>
+                <?php endif; ?>
+                <span><strong>Numero di serie:</strong> <?= mnt_h($equipment['serial_number'] ?: '—') ?></span>
+                <span><strong>Lotto:</strong> <?= mnt_h($equipment['batch_lot'] ?: '—') ?></span>
+                <span><strong>Messa in servizio:</strong> <?= mnt_format_date($equipment['commissioning_date']) ?></span>
+                <span><strong>Reparto:</strong> <?= mnt_h($equipment['department_name'] ?: '—') ?></span>
+                <span><strong>Ubicazione:</strong> <?= mnt_h($equipment['location'] ?: '—') ?></span>
+            </div>
+        </div>
+
+        <table>
+            <caption>Interventi previsti</caption>
+            <thead>
+                <tr>
+                    <th class="col-code">Tipo</th>
+                    <th>Intervento</th>
+                    <th class="col-freq">Frequenza</th>
+                    <th class="col-operator">Esecuzione</th>
+                </tr>
+            </thead>
+            <tbody>
+                <?php if (!$maintenances): ?>
+                    <tr class="empty-row">
+                        <td colspan="4">Nessuna manutenzione attiva definita.</td>
+                    </tr>
+                <?php else: ?>
+                    <?php foreach ($maintenances as $maintenance): ?>
+                        <tr>
+                            <td class="col-code"><strong><?= mnt_h($maintenance['code'] ?: '—') ?></strong></td>
+                            <td>
+                                <strong><?= mnt_h($maintenance['title']) ?></strong>
+                                <?php if ($maintenance['is_critical']): ?> (critica)<?php endif; ?>
+                                <?php if ($maintenance['description']): ?>
+                                    <div><?= nl2br(mnt_h($maintenance['description'])) ?></div>
+                                <?php endif; ?>
+                            </td>
+                            <td><?= mnt_h(mnt_format_frequency(
+                                    $maintenance['frequency_value'] !== null ? (int)$maintenance['frequency_value'] : null,
+                                    $maintenance['frequency_unit'],
+                                    $maintenance['frequency_note']
+                                )) ?></td>
+                            <td>
+                                <?= mnt_h($executionLabels[$maintenance['execution_type']] ?? '') ?>
+                                <?php if ($maintenance['supplier_name']): ?>
+                                    <div><?= mnt_h($maintenance['supplier_name']) ?></div>
+                                <?php elseif ($maintenance['assignee_name']): ?>
+                                    <div><?= mnt_h($maintenance['assignee_name']) ?></div>
+                                <?php endif; ?>
+                            </td>
+                        </tr>
+                    <?php endforeach; ?>
+                <?php endif; ?>
+            </tbody>
+        </table>
+
+        <table>
+            <caption>Registro interventi eseguiti</caption>
+            <thead>
+                <tr>
+                    <th class="col-date">Data</th>
+                    <th class="col-code">Tipo</th>
+                    <th>Intervento / note</th>
+                    <th class="col-operator">Operatore</th>
+                    <th class="col-sign">Firma</th>
+                </tr>
+            </thead>
+            <tbody>
+                <?php if (!$interventions): ?>
+                    <tr class="empty-row">
+                        <td colspan="5">Nessun intervento registrato.</td>
+                    </tr>
+                <?php else: ?>
+                    <?php foreach ($interventions as $intervention): ?>
+                        <tr>
+                            <td><?= mnt_format_date($intervention['performed_at']) ?></td>
+                            <td class="col-code"><?= mnt_h($intervention['maintenance_code'] ?: '—') ?></td>
+                            <td>
+                                <strong><?= mnt_h($intervention['maintenance_title']) ?></strong>
+                                <div>
+                                    <?= mnt_h($statusLabels[$intervention['status']] ?? $intervention['status']) ?>
+                                    <?php if ($intervention['result']): ?>
+                                        — <?= mnt_h($resultLabels[$intervention['result']] ?? $intervention['result']) ?>
+                                    <?php endif; ?>
+                                </div>
+                                <?php if ($intervention['notes']): ?>
+                                    <div><?= nl2br(mnt_h($intervention['notes'])) ?></div>
+                                <?php endif; ?>
+                                <?php if ($intervention['materials']): ?>
+                                    <div>Materiali: <?= mnt_h($intervention['materials']) ?></div>
+                                <?php endif; ?>
+                            </td>
+                            <td>
+                                <?= mnt_h($intervention['operator_full_name'] ?: ($intervention['operator_name'] ?: '—')) ?>
+                                <?php if ($intervention['supplier_name']): ?>
+                                    <div><?= mnt_h($intervention['supplier_name']) ?></div>
+                                <?php endif; ?>
+                            </td>
+                            <td>
+                                <?php if ($intervention['signature_path']): ?>
+                                    <img class="signature-img" alt="Firma"
+                                        src="manutenzioni/ajax/download_file.php?scope=signature&id=<?= (int)$intervention['id'] ?>">
+                                <?php endif; ?>
+                            </td>
+                        </tr>
+                    <?php endforeach; ?>
+                <?php endif; ?>
+            </tbody>
+        </table>
+
+        <div class="footnote">
+            Documento generato automaticamente dal portale ZIBO — registro attrezzature e manutenzioni.
+        </div>
+    </div>
+
+</body>
+
+</html>

public/userarea/manutenzioni/sql/1_rename_production_tools.sql

@@ -0,0 +1,59 @@
+DELIMITER $$
+
+DROP PROCEDURE IF EXISTS manutenzioni_migrate_step1 $$
+CREATE PROCEDURE manutenzioni_migrate_step1()
+BEGIN
+    DECLARE v_db VARCHAR(64);
+    SET v_db = DATABASE();
+
+    -- 1. Rename production_tools -> inv_equipment
+    IF EXISTS (SELECT 1 FROM information_schema.tables
+               WHERE table_schema = v_db AND table_name = 'production_tools')
+       AND NOT EXISTS (SELECT 1 FROM information_schema.tables
+               WHERE table_schema = v_db AND table_name = 'inv_equipment') THEN
+        RENAME TABLE production_tools TO inv_equipment;
+    END IF;
+
+    -- 2. Normalise charset/collation (was utf8mb4_general_ci; the rest of
+    --    the new modules are utf8mb4_unicode_ci — mixing them breaks joins
+    --    on string columns with "Illegal mix of collations")
+    ALTER TABLE inv_equipment CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+    -- 3. Registry columns (all nullable: existing rows stay valid)
+    IF NOT EXISTS (SELECT 1 FROM information_schema.columns
+                   WHERE table_schema = v_db AND table_name = 'inv_equipment'
+                     AND column_name = 'category_id') THEN
+        ALTER TABLE inv_equipment
+            ADD COLUMN category_id        INT UNSIGNED NULL AFTER name,
+            ADD COLUMN line_id            INT NULL AFTER category_id,
+            ADD COLUMN batch_lot          VARCHAR(100) NULL AFTER serial_number,
+            ADD COLUMN purchase_date      DATE NULL AFTER batch_lot,
+            ADD COLUMN commissioning_date DATE NULL AFTER purchase_date,
+            ADD COLUMN department_id      INT UNSIGNED NULL AFTER manufacturer,
+            ADD COLUMN location           VARCHAR(255) NULL AFTER department_id,
+            ADD COLUMN notes              TEXT NULL AFTER description,
+            ADD COLUMN cover_file_id      INT UNSIGNED NULL AFTER notes,
+            ADD COLUMN created_by         INT UNSIGNED NULL AFTER cover_file_id,
+            ADD KEY idx_inv_equipment_category (category_id),
+            ADD KEY idx_inv_equipment_line (line_id),
+            ADD KEY idx_inv_equipment_department (department_id);
+    END IF;
+
+    IF NOT EXISTS (SELECT 1 FROM information_schema.columns
+                   WHERE table_schema = v_db AND table_name = 'inv_equipment'
+                     AND column_name = 'status') THEN
+        ALTER TABLE inv_equipment
+            ADD COLUMN status ENUM('active','decommissioned','out_of_service') NULL AFTER location;
+        UPDATE inv_equipment SET status = IF(is_active = 1, 'active', 'decommissioned');
+        ALTER TABLE inv_equipment
+            MODIFY COLUMN status ENUM('active','decommissioned','out_of_service')
+                NOT NULL DEFAULT 'active';
+        ALTER TABLE inv_equipment DROP COLUMN is_active;
+        ALTER TABLE inv_equipment ADD KEY idx_inv_equipment_status (status);
+    END IF;
+END $$
+
+DELIMITER ;
+
+CALL manutenzioni_migrate_step1();
+DROP PROCEDURE manutenzioni_migrate_step1;

public/userarea/manutenzioni/sql/2_create_tables.sql

@@ -0,0 +1,171 @@
+CREATE TABLE IF NOT EXISTS inv_categories (
+    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    name VARCHAR(150) NOT NULL,
+    code VARCHAR(50) NULL,
+    description TEXT NULL,
+    color VARCHAR(20) NOT NULL DEFAULT '#6c757d',
+    -- when 1, the equipment form requires a production line
+    requires_line TINYINT(1) NOT NULL DEFAULT 0,
+    sort_order INT UNSIGNED NOT NULL DEFAULT 999,
+    is_active TINYINT(1) NOT NULL DEFAULT 1,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    UNIQUE KEY uniq_inv_categories_name (name),
+    KEY idx_inv_categories_active (is_active, sort_order)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS inv_equipment_files (
+    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    equipment_id INT NOT NULL,
+    kind VARCHAR(10) NOT NULL DEFAULT 'file',
+    original_name VARCHAR(500) NOT NULL,
+    stored_name VARCHAR(500) NOT NULL,
+    mime_type VARCHAR(100) NULL,
+    size INT UNSIGNED NULL,
+    uploaded_by INT UNSIGNED NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    KEY idx_inv_files_equipment (equipment_id, kind),
+    CONSTRAINT fk_inv_files_equipment FOREIGN KEY (equipment_id)
+        REFERENCES inv_equipment (id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS maint_maintenances (
+    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    equipment_id INT NOT NULL,
+    -- letter code as used on the paper form (A, B, C, ...)
+    code VARCHAR(10) NULL,
+    title VARCHAR(500) NOT NULL,
+    description TEXT NULL,
+    intervention_type VARCHAR(20) NOT NULL DEFAULT 'scheduled',
+    execution_type VARCHAR(20) NOT NULL DEFAULT 'internal',
+    is_critical TINYINT(1) NOT NULL DEFAULT 0,
+    -- frequency: NULL value + unit 'on_demand' means "no automatic due date"
+    frequency_value SMALLINT UNSIGNED NULL,
+    frequency_unit VARCHAR(20) NOT NULL DEFAULT 'month',
+    -- free text for the irregular cases in the client's sheets
+    -- ("prima dell'accensione / d'estate settimanale / dopo lo spegnimento")
+    frequency_note VARCHAR(500) NULL,
+    alert_days SMALLINT UNSIGNED NOT NULL DEFAULT 7,
+    assignee_employee_id INT UNSIGNED NULL,
+    supervisor_employee_id INT UNSIGNED NULL,
+    supplier_id INT NULL,
+    is_active TINYINT(1) NOT NULL DEFAULT 1,
+    -- denormalised, recomputed on every intervention change
+    last_done_date DATE NULL,
+    next_due_date DATE NULL,
+    notes TEXT NULL,
+    created_by INT UNSIGNED NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    KEY idx_maint_equipment (equipment_id),
+    KEY idx_maint_due (next_due_date),
+    KEY idx_maint_type (intervention_type, is_active),
+    CONSTRAINT fk_maint_equipment FOREIGN KEY (equipment_id)
+        REFERENCES inv_equipment (id) ON DELETE CASCADE,
+    CONSTRAINT fk_maint_assignee FOREIGN KEY (assignee_employee_id)
+        REFERENCES employees (id) ON DELETE SET NULL,
+    CONSTRAINT fk_maint_supervisor FOREIGN KEY (supervisor_employee_id)
+        REFERENCES employees (id) ON DELETE SET NULL,
+    CONSTRAINT fk_maint_supplier FOREIGN KEY (supplier_id)
+        REFERENCES suppliers (idsupplier) ON DELETE SET NULL
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS maint_maintenance_files (
+    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    maintenance_id INT UNSIGNED NOT NULL,
+    original_name VARCHAR(500) NOT NULL,
+    stored_name VARCHAR(500) NOT NULL,
+    mime_type VARCHAR(100) NULL,
+    size INT UNSIGNED NULL,
+    uploaded_by INT UNSIGNED NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    KEY idx_mmf_maintenance (maintenance_id),
+    CONSTRAINT fk_mmf_maintenance FOREIGN KEY (maintenance_id)
+        REFERENCES maint_maintenances (id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS maint_interventions (
+    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    maintenance_id INT UNSIGNED NOT NULL,
+    -- denormalised so the equipment history is a single-table scan
+    equipment_id INT NOT NULL,
+    performed_at DATE NOT NULL,
+    status VARCHAR(20) NOT NULL DEFAULT 'completed',
+    result VARCHAR(20) NULL,
+    notes TEXT NULL,
+    materials TEXT NULL,
+    operator_employee_id INT UNSIGNED NULL,
+    -- free text operator for external technicians not present in employees
+    operator_name VARCHAR(191) NULL,
+    signature_path VARCHAR(255) NULL,
+    supplier_id INT NULL,
+    created_by INT UNSIGNED NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    KEY idx_int_maintenance (maintenance_id, performed_at),
+    KEY idx_int_equipment (equipment_id, performed_at),
+    KEY idx_int_status (status),
+    CONSTRAINT fk_int_maintenance FOREIGN KEY (maintenance_id)
+        REFERENCES maint_maintenances (id) ON DELETE CASCADE,
+    CONSTRAINT fk_int_equipment FOREIGN KEY (equipment_id)
+        REFERENCES inv_equipment (id) ON DELETE CASCADE,
+    CONSTRAINT fk_int_operator FOREIGN KEY (operator_employee_id)
+        REFERENCES employees (id) ON DELETE SET NULL,
+    CONSTRAINT fk_int_supplier FOREIGN KEY (supplier_id)
+        REFERENCES suppliers (idsupplier) ON DELETE SET NULL
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS maint_intervention_files (
+    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    intervention_id INT UNSIGNED NOT NULL,
+    original_name VARCHAR(500) NOT NULL,
+    stored_name VARCHAR(500) NOT NULL,
+    mime_type VARCHAR(100) NULL,
+    size INT UNSIGNED NULL,
+    uploaded_by INT UNSIGNED NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    KEY idx_mif_intervention (intervention_id),
+    CONSTRAINT fk_mif_intervention FOREIGN KEY (intervention_id)
+        REFERENCES maint_interventions (id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS maint_histories (
+    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    equipment_id INT NULL,
+    maintenance_id INT UNSIGNED NULL,
+    intervention_id INT UNSIGNED NULL,
+    user_id INT UNSIGNED NULL,
+    action VARCHAR(50) NOT NULL,
+    changes TEXT NULL,
+    notes TEXT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    KEY idx_hist_equipment (equipment_id, created_at),
+    KEY idx_hist_maintenance (maintenance_id, created_at)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS maint_notifications (
+    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    maintenance_id INT UNSIGNED NOT NULL,
+    employee_id INT UNSIGNED NULL,
+    email VARCHAR(191) NOT NULL,
+    type VARCHAR(20) NOT NULL,
+    sent_date DATE NOT NULL,
+    sent_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE KEY uniq_maint_notif (maintenance_id, email, type, sent_date),
+    CONSTRAINT fk_notif_maintenance FOREIGN KEY (maintenance_id)
+        REFERENCES maint_maintenances (id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+INSERT IGNORE INTO ws_lookup_options (category, value, label, sort_order, is_default, is_active) VALUES
+('maint_status', 'planned',      'Pianificato',   10, 0, 1),
+('maint_status', 'in_progress',  'In corso',      20, 0, 1),
+('maint_status', 'completed',    'Completato',    30, 1, 1),
+
+('maint_result', 'compliant',    'Conforme',      10, 1, 1),
+('maint_result', 'not_compliant','Non conforme',  20, 0, 1),
+('maint_result', 'blocked',      'Bloccato',      30, 0, 1),
+('maint_result', 'partial',      'Parziale',      40, 0, 1),
+
+('equipment_status', 'active',          'Attivo',           10, 1, 1),
+('equipment_status', 'out_of_service',  'Fuori servizio',   20, 0, 1),
+('equipment_status', 'decommissioned',  'Dismesso',         30, 0, 1);

public/userarea/manutenzioni/sql/3_seed_and_link.sql

@@ -0,0 +1,68 @@
+INSERT IGNORE INTO inv_categories (name, code, color, requires_line, sort_order) VALUES
+('Linea di produzione', 'line',        '#dc2626', 1, 10),
+('Attrezzature',        'equipment',   '#0d6efd', 0, 20),
+('Accessori',           'accessories', '#20c997', 0, 30),
+('Qualità',             'quality',     '#6f42c1', 0, 40);
+
+UPDATE inv_equipment
+SET category_id = (SELECT id FROM inv_categories WHERE code = 'equipment')
+WHERE category_id IS NULL AND line_id IS NULL;
+
+INSERT INTO inv_equipment (name, category_id, line_id, status, description, created_at, updated_at)
+SELECT
+    pl.name,
+    (SELECT id FROM inv_categories WHERE code = 'line'),
+    pl.id,
+    IF(pl.status = 'active', 'active', 'out_of_service'),
+    CONCAT_WS(' ', NULLIF(pl.brand, ''), NULLIF(pl.model, '')),
+    NOW(), NOW()
+FROM production_lines pl
+WHERE NOT EXISTS (
+    SELECT 1 FROM inv_equipment e WHERE e.line_id = pl.id
+);
+
+DELIMITER $$
+
+DROP PROCEDURE IF EXISTS manutenzioni_migrate_step3 $$
+CREATE PROCEDURE manutenzioni_migrate_step3()
+BEGIN
+    DECLARE v_db VARCHAR(64);
+    SET v_db = DATABASE();
+
+    IF NOT EXISTS (SELECT 1 FROM information_schema.table_constraints
+                   WHERE table_schema = v_db AND table_name = 'inv_equipment'
+                     AND constraint_name = 'fk_inv_equipment_category') THEN
+        ALTER TABLE inv_equipment
+            ADD CONSTRAINT fk_inv_equipment_category FOREIGN KEY (category_id)
+                REFERENCES inv_categories (id) ON DELETE SET NULL;
+    END IF;
+
+    IF NOT EXISTS (SELECT 1 FROM information_schema.table_constraints
+                   WHERE table_schema = v_db AND table_name = 'inv_equipment'
+                     AND constraint_name = 'fk_inv_equipment_line') THEN
+        ALTER TABLE inv_equipment
+            ADD CONSTRAINT fk_inv_equipment_line FOREIGN KEY (line_id)
+                REFERENCES production_lines (id) ON DELETE SET NULL;
+    END IF;
+
+    IF NOT EXISTS (SELECT 1 FROM information_schema.table_constraints
+                   WHERE table_schema = v_db AND table_name = 'inv_equipment'
+                     AND constraint_name = 'fk_inv_equipment_department') THEN
+        ALTER TABLE inv_equipment
+            ADD CONSTRAINT fk_inv_equipment_department FOREIGN KEY (department_id)
+                REFERENCES departments (id) ON DELETE SET NULL;
+    END IF;
+
+    IF NOT EXISTS (SELECT 1 FROM information_schema.table_constraints
+                   WHERE table_schema = v_db AND table_name = 'inv_equipment'
+                     AND constraint_name = 'fk_inv_equipment_cover') THEN
+        ALTER TABLE inv_equipment
+            ADD CONSTRAINT fk_inv_equipment_cover FOREIGN KEY (cover_file_id)
+                REFERENCES inv_equipment_files (id) ON DELETE SET NULL;
+    END IF;
+END $$
+
+DELIMITER ;
+
+CALL manutenzioni_migrate_step3();
+DROP PROCEDURE manutenzioni_migrate_step3;

public/userarea/manutenzioni/sql/4_permissions.sql

@@ -0,0 +1,19 @@
+INSERT IGNORE INTO auth_permissions
+(name, display_name, description, removable, created_at, updated_at)
+VALUES
+('maintenance.equipment.view',   'View Equipment Registry', 'Can view the equipment registry.',              1, NOW(), NOW()),
+('maintenance.maintenances.view','View Maintenances',       'Can view maintenances and the intervention log.', 1, NOW(), NOW()),
+('maintenance.calendar.view',    'View Maintenance Calendar','Can view the maintenance calendar.',            1, NOW(), NOW()),
+('maintenance.categories.view',  'View Equipment Categories','Can view equipment categories.',                1, NOW(), NOW()),
+('maintenance.manage',           'Manage Maintenance',      'Can create/edit equipment, maintenances and interventions.', 1, NOW(), NOW());
+
+INSERT IGNORE INTO auth_permission_role (permission_id, role_id)
+SELECT p.id, 1
+FROM auth_permissions p
+WHERE p.name IN (
+    'maintenance.equipment.view',
+    'maintenance.maintenances.view',
+    'maintenance.calendar.view',
+    'maintenance.categories.view',
+    'maintenance.manage'
+);

public/userarea/production_line_view2.php

@@ -288,7 +288,7 @@ if (!empty($_GET['ajax'])) {
             (
                 SELECT GROUP_CONCAT(t.name ORDER BY t.name SEPARATOR ' | ')
                 FROM productiondata_tools pt
-                JOIN production_tools t ON t.id = pt.tool_id
+                JOIN inv_equipment t ON t.id = pt.tool_id
                 WHERE pt.productiondata_id = p.id
             ) AS tools_list,
             (
@@ -350,7 +350,7 @@ if (!empty($_GET['ajax'])) {
             (
                 SELECT GROUP_CONCAT(t.name ORDER BY t.name SEPARATOR ' | ')
                 FROM productiondata_tools pt
-                JOIN production_tools t ON t.id = pt.tool_id
+                JOIN inv_equipment t ON t.id = pt.tool_id
                 WHERE pt.productiondata_id = p.id
             ) AS tools_list,
             (

public/userarea/production_tools.php

@@ -127,7 +127,15 @@
                                     $db = DBHandlerSelect::getInstance();
                                     $pdo = $db->getConnection();
 
-                                    $stmt = $pdo->query("SELECT * FROM production_tools ORDER BY id ASC");
+                                    // production_tools is now the unified registry inv_equipment;
+                                    // this page keeps showing the "Attrezzature" slice of it.
+                                    $stmt = $pdo->query("
+                                        SELECT e.*
+                                        FROM inv_equipment e
+                                        LEFT JOIN inv_categories c ON c.id = e.category_id
+                                        WHERE c.code = 'equipment' OR e.category_id IS NULL
+                                        ORDER BY e.id ASC
+                                    ");
                                     while ($row = $stmt->fetch(PDO::FETCH_ASSOC)):
                                     ?>
                                         <tr>
@@ -139,10 +147,17 @@
                                             <td><?= nl2br(htmlspecialchars($row['description'] ?? '')) ?></td>
 
                                             <td>
-                                                <?php if ((int)$row['is_active'] === 1): ?>
+                                                <?php
+                                                $statusLabels = [
+                                                    'active'         => 'Attivo',
+                                                    'out_of_service' => 'Fuori servizio',
+                                                    'decommissioned' => 'Dismesso',
+                                                ];
+                                                ?>
+                                                <?php if ($row['status'] === 'active'): ?>
                                                     <span class="badge-active">Attivo</span>
                                                 <?php else: ?>
-                                                    <span class="badge-inactive">Non attivo</span>
+                                                    <span class="badge-inactive"><?= htmlspecialchars($statusLabels[$row['status']] ?? $row['status']) ?></span>
                                                 <?php endif; ?>
                                             </td>
 
@@ -156,7 +171,7 @@
                                                     data-type="<?= htmlspecialchars($row['tool_type'] ?? '', ENT_QUOTES) ?>"
                                                     data-manufacturer="<?= htmlspecialchars($row['manufacturer'] ?? '', ENT_QUOTES) ?>"
                                                     data-desc="<?= htmlspecialchars($row['description'] ?? '', ENT_QUOTES) ?>"
-                                                    data-active="<?= (int)$row['is_active'] ?>">
+                                                    data-status="<?= htmlspecialchars($row['status'], ENT_QUOTES) ?>">
                                                     <i class="fas fa-edit"></i>
                                                 </button>
 
@@ -214,9 +229,10 @@
                         <textarea name="description" class="form-control mb-3"></textarea>
 
                         <label class="fw-semibold">Stato</label>
-                        <select name="is_active" class="form-control">
-                            <option value="1">Attivo</option>
-                            <option value="0">Non attivo</option>
+                        <select name="status" class="form-control">
+                            <option value="active">Attivo</option>
+                            <option value="out_of_service">Fuori servizio</option>
+                            <option value="decommissioned">Dismesso</option>
                         </select>
 
                     </div>
@@ -265,9 +281,10 @@
                         <textarea id="edit_description" name="description" class="form-control mb-3"></textarea>
 
                         <label class="fw-semibold">Stato</label>
-                        <select id="edit_is_active" name="is_active" class="form-control">
-                            <option value="1">Attivo</option>
-                            <option value="0">Non attivo</option>
+                        <select id="edit_status" name="status" class="form-control">
+                            <option value="active">Attivo</option>
+                            <option value="out_of_service">Fuori servizio</option>
+                            <option value="decommissioned">Dismesso</option>
                         </select>
 
                     </div>
@@ -327,7 +344,7 @@
                 $("#edit_tool_type").val($(this).data("type"));
                 $("#edit_manufacturer").val($(this).data("manufacturer"));
                 $("#edit_description").val($(this).data("desc"));
-                $("#edit_is_active").val($(this).data("active"));
+                $("#edit_status").val($(this).data("status"));
 
                 $("#editToolModal").modal("show");
             });

public/userarea/save_tool.php

@@ -16,17 +16,24 @@ try {
     $toolType           = trim($_POST['tool_type'] ?? '');
     $manufacturer       = trim($_POST['manufacturer'] ?? '');
     $description        = trim($_POST['description'] ?? '');
-    $isActive           = isset($_POST['is_active']) ? (int)$_POST['is_active'] : 1;
+    $status             = (string)($_POST['status'] ?? 'active');
 
     if ($name === '') {
         echo json_encode(['success' => false, 'message' => 'Name is required.']);
         exit;
     }
 
-    $sql = "INSERT INTO production_tools 
-                (name, registration_number, serial_number, tool_type, manufacturer, description, is_active)
-            VALUES 
-                (:name, :registration_number, :serial_number, :tool_type, :manufacturer, :description, :is_active)";
+    if (!in_array($status, ['active', 'out_of_service', 'decommissioned'], true)) {
+        $status = 'active';
+    }
+
+    // production_tools is now inv_equipment; tools created here land in the
+    // "Attrezzature" category of the registry.
+    $sql = "INSERT INTO inv_equipment
+                (name, registration_number, serial_number, tool_type, manufacturer, description, status, category_id)
+            VALUES
+                (:name, :registration_number, :serial_number, :tool_type, :manufacturer, :description, :status,
+                 (SELECT id FROM inv_categories WHERE code = 'equipment'))";
 
     $stmt = $pdo->prepare($sql);
     $stmt->execute([
@@ -36,7 +43,7 @@ try {
         'tool_type'          => $toolType ?: null,
         'manufacturer'       => $manufacturer ?: null,
         'description'        => $description ?: null,
-        'is_active'          => $isActive
+        'status'             => $status
     ]);
 
     echo json_encode(['success' => true]);

public/userarea/skills.php

@@ -104,7 +104,7 @@ $skills = $pdo->query("
         pt.registration_number
     FROM skills s
     LEFT JOIN production_lines pl ON s.production_line_id = pl.id
-    LEFT JOIN production_tools pt ON s.tool_id = pt.id
+    LEFT JOIN inv_equipment pt ON s.tool_id = pt.id
     ORDER BY s.ordinamento ASC, s.id
 ")->fetchAll(PDO::FETCH_ASSOC);
 
@@ -113,9 +113,9 @@ $lines = $pdo->query("SELECT id, name FROM production_lines ORDER BY line_number
 
 // Attrezzature per tendina
 $tools = $pdo->query("
-    SELECT id, name, registration_number 
-    FROM production_tools 
-    WHERE is_active = 1 
+    SELECT id, name, registration_number
+    FROM inv_equipment
+    WHERE status = 'active'
     ORDER BY name
 ")->fetchAll(PDO::FETCH_ASSOC);
 ?>