Add stamp, fix html, change accepts

src/main/resources/templates/auto-split-pdf.html

@@ -24,7 +24,7 @@
 						</ul>
 						<form method="post" enctype="multipart/form-data" th:action="@{api/v1/misc/auto-split-pdf}">
 						    <p th:text="#{autoSplitPDF.formPrompt}"></p>
-						    <div th:replace="~{fragments/common :: fileSelector(name='fileInput', multiple=false)}"></div>
+						    <div th:replace="~{fragments/common :: fileSelector(name='fileInput', multiple=false, accept='application/pdf')}"></div>
 						    <div class="form-check">
                                 <input type="checkbox" class="form-check-input" name="duplexMode" id="duplexMode"> 
                                 <label class="ms-3" for="duplexMode" th:text=#{autoSplitPDF.duplexMode}></label>