fix: static files linked with their content hash, so a release is never shadowed by a cached copy (Cloudflare kept the old CSS)

internal/server/web/templates/files.html

@@ -4,8 +4,8 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Файлы · {{.Agent.Name}} - LPRA</title>
-<link rel="stylesheet" href="/static/app.css">
-<link rel="stylesheet" href="/static/codemirror/codemirror.css">
+<link rel="stylesheet" href="{{asset "app.css"}}">
+<link rel="stylesheet" href="{{asset "codemirror/codemirror.css"}}">
 <style>
   .fm-bar { display:flex; gap:8px; align-items:center; flex-wrap:wrap; margin-bottom:12px; }
   /* Normalize buttons and the file <label> button so they line up on one row. */
@@ -333,8 +333,8 @@
 
 <div class="toast" id="toast"></div>
 
-<script src="/static/codemirror/codemirror.js"></script>
-<script src="/static/docview.js"></script>
+<script src="{{asset "codemirror/codemirror.js"}}"></script>
+<script src="{{asset "docview.js"}}"></script>
 <script>
 (function () {
   const agentID = {{.Agent.ID}};