feat: clean URLs + fix addFileMeta silent failure

templates/copyright_ack.php

@@ -4,7 +4,7 @@
 <div class="col-lg-8 col-xl-7">
 
 <div class="d-flex align-items-center gap-3 mb-4">
-    <a href="/?action=import_image&uuid=<?= rawurlencode($ackArticle['uuid']) ?>"
+    <a href="/import/<?= rawurlencode($ackArticle['uuid']) ?>"
        class="btn btn-secondary btn-sm">← Retour</a>
     <h1 class="h4 mb-0">Confirmation — droits d'auteur</h1>
 </div>
@@ -99,7 +99,7 @@
 
     <div class="d-flex gap-2">
         <button type="submit" class="btn btn-primary">Télécharger et insérer</button>
-        <a href="/?action=import_image&uuid=<?= rawurlencode($ackArticle['uuid']) ?>"
+        <a href="/import/<?= rawurlencode($ackArticle['uuid']) ?>"
            class="btn btn-outline-secondary">Annuler</a>
     </div>
 </form>