feat: open the file manager in the user's home directory

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/server/web/templates/files.html

@@ -282,7 +282,15 @@
   ['dragleave','drop'].forEach(x => drop.addEventListener(x, e => { e.preventDefault(); if(x!=='drop')drop.classList.remove('drag'); }));
   drop.addEventListener('drop', e => { drop.classList.remove('drag'); if (e.dataTransfer.files.length) uploadFiles(e.dataTransfer.files); });
 
-  load('/');
+  // Start in the home directory of the machine's user; an agent too old to
+  // know "~" fails that listing, so fall back to the root.
+  (async () => {
+    const r = await api('list', {path: '~' + {{.Agent.LoginUser}}});
+    if (!r.ok) { load('/'); return; }
+    cwd = r.data.path; entries = r.data.entries || []; selected.clear();
+    $('path').value = cwd;
+    render();
+  })();
 })();
 </script>
 </body>