feat(seo): index public online pages without confirmation

Drop the user_confirmed_at gate so public, online, unexpired pages can enter sitemap/llms and receive SEO/GEO tags. Defaults now enable all discovery switches; stored all-off config is still preserved until admin saves.

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

mindspace-index-policy.mjs

@@ -40,7 +40,6 @@ export function isPublicationIndexable(publication, { now = Date.now() } = {}) {
   if (!snapshot) return false;
   if (snapshot.status !== 'online') return false;
   if (snapshot.accessMode !== INDEXABLE_ACCESS_MODE) return false;
-  if (snapshot.userConfirmedAt == null) return false;
   if (snapshot.expiresAt != null && snapshot.expiresAt <= now) return false;
   return true;
 }
@@ -74,7 +73,7 @@ export function resolveIndexPolicy({
   return {
     mode: 'indexable',
     injectNoindex: false,
-    reason: 'public_confirmed',
+    reason: 'public_online',
     seoEnabled: Boolean(seoGeoConfig.seo?.enabled),
     geoEnabled: Boolean(seoGeoConfig.geo?.enabled),
     canonicalEnabled: seoGeoConfig.seo?.canonical !== false,