feat(control): IV Control admin app — owner-gated /api/control proxy to ivctl + Control view (applicants/instances/releases/tickets/groups) + sidebar

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

public/components/sidebar.js

@@ -117,7 +117,8 @@ export function renderSidebar(root) {
     el('div', { class: 'sb-section' },
       el('div', { class: 'sb-title' }, 'Agents'),
       navItem('Yerin', '/yerin', { dot: 'yerin' }),
-      navItem('Little Blue', '/little-blue', { dot: 'lb' })
+      navItem('Little Blue', '/little-blue', { dot: 'lb' }),
+      navItem('Control', '/control')
     ),
     el('div', { class: 'sb-section' },
       el('div', { class: 'sb-title' }, 'Navigate'),