docs: mark stale gb32960 designs superseded

modules/apps/vehicle-history-app/src/test/java/com/lingniu/ingest/historyapp/MavenModuleProfileTest.java

@@ -181,6 +181,21 @@ class MavenModuleProfileTest {
                 .doesNotContain("Spring Boot 3.4.x");
     }
 
+    @Test
+    void supersededDesignDocsPointToCurrentArchitecture() throws Exception {
+        for (String path : List.of(
+                "docs/superpowers/specs/2026-06-23-gb32960-production-readiness-design.md",
+                "docs/superpowers/specs/2026-06-23-gb32960-service-split-design.md")) {
+            String doc = Files.readString(repositoryRoot().resolve(path));
+
+            assertThat(doc)
+                    .as(path)
+                    .startsWith("> **Superseded:**")
+                    .contains("docs/target-architecture.md")
+                    .contains("docs/superpowers/specs/2026-06-29-vehicle-ingest-redesign.md");
+        }
+    }
+
     @Test
     void duckDbDriverDoesNotLeakFromCompatibilityStoreIntoProductionApps() throws Exception {
         Document eventFileStorePom = modulePom("modules/sinks/event-file-store/pom.xml");