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.

src/forms/form_static_add.php

@@ -44,6 +44,12 @@
                   <li class="nav-item">
                     <a class="nav-link" data-toggle="pill" href="#twofa" role="tab" aria-controls="custom-tabs-four-settings" aria-selected="false">2FA <i class="fa fa-key"></i></a>
                   </li>
+                  <li class="nav-item">
+                    <a class="nav-link" data-toggle="pill" href="#applink" role="tab" aria-controls="custom-tabs-four-settings" aria-selected="false">App Link <i class="fas fa-mobile-alt"></i></a>
+                  </li>
+                  <li class="nav-item">
+                    <a class="nav-link" data-toggle="pill" href="#bluetooth" role="tab" aria-controls="custom-tabs-four-settings" aria-selected="false">Bluetooth <i class="fab fa-bluetooth-b"></i></a>
+                  </li>
                 </ul>
             </div>
               <div class="card-body">
@@ -88,7 +94,13 @@
                         <?php include BASE_PATH . '/forms/static/bitcoin.php'; ?>  
                     </div>
                     <div class="tab-pane fade" id="twofa" role="tabpanel" aria-labelledby="custom-tabs-four-profile-tab">
-                        <?php include BASE_PATH . '/forms/static/2fa.php'; ?>  
+                        <?php include BASE_PATH . '/forms/static/2fa.php'; ?>
+                    </div>
+                    <div class="tab-pane fade" id="applink" role="tabpanel" aria-labelledby="custom-tabs-four-profile-tab">
+                        <?php include BASE_PATH . '/forms/static/applink.php'; ?>
+                    </div>
+                    <div class="tab-pane fade" id="bluetooth" role="tabpanel" aria-labelledby="custom-tabs-four-profile-tab">
+                        <?php include BASE_PATH . '/forms/static/bluetooth.php'; ?>
                     </div>
                 </div>
               </div>