test: seed ready wrapups, federation-off gate target

.github/workflows/ci.yml

@@ -41,6 +41,9 @@ jobs:
       - name: test
         run: cargo test
 
+      - name: test (federation off)
+        run: cargo test --workspace --no-default-features
+
       # Layering guards. These live in the Makefile and were previously local-only,
       # so a PR could go green in CI while violating them.
       - name: guards