feat: the workspace at /workspace; Настройки show the assistant's model as set, key included, and PostgreSQL's fields only when chosen, its two buttons on one line; pages come in softly

internal/server/web/static/workspace.js

@@ -754,7 +754,7 @@
   // open opens a pane of kind on agent in a new tab and shows the view.
   function open(kind, agent, opts) {
     const t = openPane(kind, agent, opts);
-    if (location.pathname !== '/terminal' && window.App) App.go('/terminal');
+    if (location.pathname !== '/workspace' && window.App) App.go('/workspace');
     return t;
   }
   const in_ = (el, x, y) => { const r = el.getBoundingClientRect(); return x >= r.left && x <= r.right && y >= r.top && y <= r.bottom; };