[add] better xpath generation, [add] wake lock, [add] device sorting,

[fix] better theme management

templates/reader.html

@@ -1,12 +1,14 @@
 {{template "base.html" .}} {{define "title"}}Reader{{end}} {{define "header"}}
 <a href="../">Documents</a>
 {{end}} {{define "content"}}
+
+<div id="viewer" class="w-full h-screen"></div>
+
 <script src="../../assets/reader/platform.js"></script>
 <script src="../../assets/reader/jszip.min.js"></script>
 <script src="../../assets/reader/epub.min.js"></script>
+<script src="../../assets/reader/no-sleep.js"></script>
 <script src="../../assets/reader/index.js"></script>
-<div id="viewer" class="w-full h-[100dvh] absolute top-0 left-0"></div>
-<div id="hiddden-viewer" class="hidden"></div>
 <script>
   let currentReader = new EBookReader("./file", {
     id: "{{ .Data.ID }}",