Previously iconSetsPanel() was called eagerly on settings render,
triggering a GET /api/icon-sets request even while the section was
collapsed. Now the panel is created and appended on first toggle-open,
with subsequent clicks toggling display as before.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Sidebar: Spaces / Agents / Navigate sections, accent pill on active item, status
dots on agents. Settings Agents rows expand to show the agent's persona (soul) +
capabilities/scopes via GET /api/agents/:id/profile.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>