Add feature opt-ins, dashboard view, and tests

Introduce feature_interests schema + realtime publication and surface opt-in trends in the admin dashboard. Add Jest test infrastructure/coverage for the mobile app and update push-all to run mobile checks before pushing.

Co-authored-by: Claude Code <claude@anthropic.com>

apps/supabase/migrations/20260102000001_add_feature_interests_to_realtime.sql

@@ -0,0 +1,14 @@
+-- Enable realtime updates for feature interest opt-ins
+
+DO $$
+BEGIN
+  IF NOT EXISTS (
+    SELECT 1
+    FROM pg_publication_tables
+    WHERE pubname = 'supabase_realtime'
+      AND schemaname = 'public'
+      AND tablename = 'feature_interests'
+  ) THEN
+    ALTER PUBLICATION supabase_realtime ADD TABLE feature_interests;
+  END IF;
+END $$;