Update management terminology in account, productAdder, offerAdder, and shopAdder pages

account.php

@@ -229,13 +229,13 @@ include 'header.php';
                         if (!empty($_SESSION['user_roles']) && in_array('ADMIN', $_SESSION['user_roles'], true)): 
                         ?>
                             <a href="productAdder.php" class="auth__submit account__action-link">
-                                Produkt hinzufügen
+                                Produkt verwalten
                             </a>
                             <a href="offerAdder.php" class="auth__submit account__action-link" style="margin-top: 10px; background-color: #f59e0b;">
-                                Angebot hinzufügen
+                                Angebot verwalten
                             </a>
                             <a href="shopAdder.php" class="auth__submit account__action-link" style="margin-top: 10px; background-color: #10b981;">
-                                Shop hinzufügen
+                                Shop verwalten
                             </a>
                             <a href="admin_users.php" class="auth__submit account__action-link" style="margin-top: 10px; background-color: #3b82f6;">
                                 Benutzerverwaltung

offerAdder.php

@@ -111,7 +111,7 @@ include 'header.php';
     <section class="auth__grid" style="grid-template-columns: 1fr;">
         <div class="auth__card">
             <header class="auth__header">
-                <h2 class="auth__title">Angebot hinzufügen</h2>
+                <h2 class="auth__title">Angebot verwalten</h2>
             </header>
 
             <?php if ($message): ?>

productAdder.php

@@ -68,6 +68,28 @@ if (isset($_GET['categoryID']) && ctype_digit($_GET['categoryID'])) {
    ======================= */
 $conn = db_connect();
 
+/* =======================
+   2b) Produkt löschen
+   ======================= */
+$deleteMessage = '';
+$deleteMessageType = '';
+if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['action']) && $_POST['action'] === 'delete_product') {
+    $delProductID = (int)$_POST['product_id'];
+    $catIDFromForm = (int)$_POST['categoryID']; // to redirect back
+    if ($delProductID > 0) {
+        $delStmt = $conn->prepare("DELETE FROM products WHERE productID = ?");
+        $delStmt->bind_param("i", $delProductID);
+        if ($delStmt->execute()) {
+            $deleteMessage = 'Produkt erfolgreich gelöscht!';
+            $deleteMessageType = 'success';
+        } else {
+            $deleteMessage = 'Fehler beim Löschen des Produkts (möglicherweise sind noch Angebote oder Attribute verknüpft?).';
+            $deleteMessageType = 'error';
+        }
+        $delStmt->close();
+    }
+}
+
 /**
  * @section Kategorien-Laden
  * @brief Abrufen aller verfügbaren Kategorien.
@@ -419,7 +441,7 @@ include 'header.php';
         <?php if ($categoryID > 0): ?>
             <div class="auth__card">
                 <header class="auth__header">
-                    <h2 class="auth__title">Produkt hinzufügen</h2>
+                    <h2 class="auth__title">Produkt verwalten</h2>
                 </header>
 
                 <form method="post" class="auth__form" enctype="multipart/form-data">
@@ -484,6 +506,53 @@ include 'header.php';
             </div>
         <?php endif; ?>
 
+        <!-- Produkt löschen -->
+        <div class="auth__card">
+            <header class="auth__header">
+                <h2 class="auth__title">Produkt löschen</h2>
+            </header>
+
+            <?php if ($deleteMessage): ?>
+                <div class="auth__message auth__message--<?= $deleteMessageType ?>">
+                    <?= htmlspecialchars($deleteMessage) ?>
+                </div>
+            <?php endif; ?>
+
+            <form method="post" class="auth__form">
+                <input type="hidden" name="categoryID" value="<?= $categoryID ?>">
+                <input type="hidden" name="action" value="delete_product">
+                <div class="auth__select__wrap">
+                    <label class="auth__select__label" for="product_id">Produkt</label>
+                    <select id="product_id" name="product_id" class="auth__select" required>
+                        <option value="">Produkt wählen</option>
+                        <?php
+                        // Produkte der ausgewählten Kategorie für die Löschauswahl laden
+                        $products = [];
+                        $result = $conn->query("
+                            SELECT productID, model
+                            FROM products
+                            WHERE categoryID = " . (int)$categoryID . "
+                            ORDER BY model
+                        ");
+                        while ($row = $result->fetch_assoc()) {
+                            $products[] = $row;
+                        }
+                        foreach ($products as $product): ?>
+                            <option value="<?= $product['productID'] ?>">
+                                <?= htmlspecialchars($product['model']) ?>
+                            </option>
+                        <?php endforeach; ?>
+                    </select>
+                </div>
+
+                <div class="auth__actions">
+                    <button type="submit" class="auth__submit">
+                        Produkt löschen
+                    </button>
+                </div>
+            </form>
+        </div>
+
     </section>
 </main>
 

shopAdder.php

@@ -127,7 +127,7 @@ include 'header.php';
     <section class="auth__grid" style="grid-template-columns: 1fr;">
         <div class="auth__card">
             <header class="auth__header">
-                <h2 class="auth__title">Shop hinzufügen</h2>
+                <h2 class="auth__title">Shop verwalten</h2>
             </header>
 
             <?php if ($message): ?>