Add Valkey cluster backplane and sticky-410 ownership (clusters) (#6472)

app/common/src/test/java/stirling/software/common/cluster/inprocess/InProcessDistributedLockTest.java

@@ -24,7 +24,9 @@ class InProcessDistributedLockTest {
     }
 
     @Test
-    void reentryFromSameThreadFails() {
+    void reentryFromSameThreadFails_parityWithValkey() {
+        // The Valkey impl refuses reentry (SET NX semantics); the in-process impl must match,
+        // otherwise code working in single-instance silently breaks in cluster mode.
         DistributedLock lock = new InProcessDistributedLock();
         DistributedLock.LockHandle h1 = lock.tryAcquire("k", Duration.ofSeconds(30)).orElseThrow();
         Optional<DistributedLock.LockHandle> reentry = lock.tryAcquire("k", Duration.ofSeconds(30));

app/common/src/test/java/stirling/software/common/service/TaskManagerJobStoreDelegationTest.java

@@ -86,6 +86,8 @@ class TaskManagerJobStoreDelegationTest {
 
                     @Override
                     public boolean shouldRunLocalCleanup() {
+                        // Distributed backplanes own job TTL eviction themselves; this mock
+                        // mirrors the real ValkeyClusterBackplane override of the default true.
                         return false;
                     }
                 };