feat: agency control panel for per-client connections

Matrix view of Meta/Google/Drive/Clientify, follow/archive clients,
and per-channel ON/OFF with account IDs in the client hub.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/components/TenantSwitcher.tsx

@@ -31,7 +31,9 @@ export default function TenantSwitcher({
     fetch('/api/admin/portfolio')
       .then((r) => r.json())
       .then((d) => {
-        const list = (d.portfolio || []).map(
+        const list = (d.portfolio || [])
+          .filter((t: { agency_followed?: boolean }) => t.agency_followed !== false)
+          .map(
           (t: { id: string; name: string; slug: string }) => ({
             id: t.id,
             name: t.name,