feat(orchestrator): add SSE events, queue controls, and mosaic rails sync

.mosaic/quality-rails.yml

@@ -0,0 +1,10 @@
+enabled: false
+template: ""
+
+# Set enabled: true and choose one template:
+# - typescript-node
+# - typescript-nextjs
+# - monorepo
+#
+# Apply manually:
+#   ~/.config/mosaic/bin/mosaic-quality-apply --template <template> --target <repo>