Fase 3 v1: new qr types, svg export, clipboard, frame text, batch CSV

New static qr types:
- App Link: Android intent:// links (with package + optional browser
  fallback) or a generic custom-scheme URI. iOS Universal Links need no
  special encoding (they're just plain https:// URLs).
- Bluetooth: device name + MAC address. Purely informational, since unlike
  WIFI:/vCard there's no OS-native "scan to pair" convention.

SVG export: already worked (format whitelist/dropdown existed since Fase 1),
verified rather than reimplemented.

Copy-to-clipboard button next to the download button on both qr list tables,
using the Clipboard API against a fetched blob.

Optional frame text label rendered below the qr code via GD after
generation (raster formats only, no-op for svg/eps).

Batch CSV upload (batch_qrcode.php): filename,link rows create dynamic qr
codes with sane defaults, downloadable as a zip. Required refactoring
Qrcode-intchil.php's generation path (previously always redirected/exited
via failure()/success(), which can't run in a loop) into a private
renderAndStore() that throws instead, shared by addQrcode() and the new
addQrcodeBatch(). Qrcode.php's addQrcodeBatch() is a separate, deliberately
duplicated implementation instead, since its generation logic is small
enough that duplication carries less risk than refactoring the working
external-API code path.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/lib/DynamicQrcode/DynamicQrcode.php

@@ -75,10 +75,49 @@ class DynamicQrcode {
         
         $this->qrcode_instance->addQrcode($input_data, $data_to_db, $data_to_qrcode);
     }
-    
+
+    /**
+     * Batch-safe variant used by batch_qrcode.php: creates one dynamic qr code from a
+     * CSV row (filename + link) with sane defaults, returning a result array
+     * (['ok' => bool, 'id'|'error' => ...]) instead of redirecting/exiting.
+     */
+    public function addQrcodeBatchRow($filename, $link, $id_owner) {
+        $filename = trim((string) $filename);
+        $link = trim((string) $link);
+
+        if ($filename === '') {
+            return ['ok' => false, 'error' => 'Filename is required.'];
+        }
+
+        if ($link === '' || strlen($link) > 500) {
+            return ['ok' => false, 'error' => 'Link is required and must be at most 500 characters.'];
+        }
+
+        $data_to_db['id_owner'] = $id_owner !== '' ? $id_owner : NULL;
+        $data_to_db['filename'] = htmlspecialchars($filename, ENT_QUOTES, 'UTF-8');
+        $data_to_db['created_at'] = date('Y-m-d H:i:s');
+        $data_to_db['link'] = htmlspecialchars($link, ENT_QUOTES, 'UTF-8');
+        $data_to_db['created_by'] = $_SESSION['user_id'];
+        $data_to_db['format'] = 'png';
+        $data_to_db['identifier'] = randomString(rand(5, 8));
+        $data_to_db['qrcode'] = $data_to_db['filename'].'.'.$data_to_db['format'];
+
+        $data_to_qrcode = READ_PATH.$data_to_db['identifier'];
+
+        $input_data = [
+            'level' => 'L',
+            'size' => 200,
+            'foreground' => '#000000',
+            'background' => '#ffffff',
+            'frame_text' => '',
+        ];
+
+        return $this->qrcode_instance->addQrcodeBatch($input_data, $data_to_db, $data_to_qrcode);
+    }
+
     /**
      * Edit qr code
-     * 
+     *
      */
     public function editQrcode($input_data) {
         $this->validateLink($input_data['link'] ?? '');