feat: file manager on SSH hosts through a machine - open from the plus menu

internal/server/web/static/fileviews.js

@@ -269,7 +269,7 @@
       if (r.data.truncated) $('vmsg').textContent += ' · показаны первые ' + fmtSize(EDIT_LIMIT);
       return;
     }
-    if (/^(db|sqlite3?|db3)$/.test(ext)) {
+    if (/^(db|sqlite3?|db3)$/.test(ext) && cur.src.caps.sqlite) {
       // The agent opens the database and edits it; one that predates that
       // gets the file read here, for viewing only.
       box.innerHTML = '<p class="dv-note">загрузка…</p>';
@@ -858,6 +858,9 @@
     $('mv-src').textContent = M.src + (e.is_dir ? '/' : '');
     setOp('move');
     if (!M.job) { busy(false); setRemote(false); }
+    // From an SSH host the file goes elsewhere by dragging it to a pane;
+    // this dialog sends a machine's files only.
+    $('mv-net').hidden = cur.kind === 'sshfiles';
     $('mv-dir').value = cur.cwd === '/' ? '/' : cur.cwd + '/';
     $('mv-name').value = e.name;
     $('mv-conflict').value = 'error';