feat(analytics): add SEO/GEO page dashboard and retire Rybbit SSO

Expose Umami memind-pages discoveryChannel data in adm with a public-page
style table, proxy it via admin-api, and remove Rybbit configuration paths.

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

package.json

@@ -12,6 +12,7 @@
     "local_restart": "bash scripts/local_restart.sh",
     "pro_restart": "bash scripts/pro_restart.sh",
     "build": "vite build",
+    "test:umami-analytics": "node --test server/umami-analytics.test.mjs",
     "test:orchestrator": "node --test server/orchestrator-routes.test.mjs",
     "verify:template-catalog-local": "node scripts/verify-template-catalog-local.mjs",
     "preview": "node scripts/preview.mjs",