Drop flex container from panel agents card chips

The panel agents card wrapped its agent chips in a display:flex container;
render them in a plain div so they flow naturally with the surrounding
layout instead of being forced onto one flex row.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

wwwroot/js/pages/session-page.js

@@ -145,7 +145,7 @@ registerPage('session', {
         var model = a ? ((typeof prettyModelName === 'function') ? prettyModelName(a.model) : a.model) : '';
         return '<span class="badge">' + esc(label) + (model ? ' · ' + esc(model) : '') + '</span>';
       }).join(' ');
-      panelAgentsCard.innerHTML = '<div style="display:flex;flex-wrap:wrap;gap:4px;align-items:center">' + chips + '</div>'
+      panelAgentsCard.innerHTML = '<div>' + chips + '</div>'
         + '<span class="agent-select-change"><i class="fa fa-pencil"></i></span>';
     }
     function updatePanelVisibility() {