feat(ha-commit-durability): cap commit self-contribution at durable_lsn + durable-advance commit wake (task 2.2)

src/controller/testsuite/test_repl_majority.c

@@ -78,6 +78,12 @@ static void majority_setup(int n_peers, int n_standbys, uint64_t appended_lsn)
     }
     g_mp.current_lsn = appended_lsn + 1;
     atomic_store(&g_mp.committed_lsn, 0);
+    /* ha-commit-durability 2.2: the commit majority now caps self at
+     * durable_lsn. This stub has no flusher, so mark every appended entry
+     * durable up front to preserve the pre-durability model ("self covers
+     * every appended entry"); the durability precondition is exercised
+     * separately in test_commit_durability.c / test_commit_engine.c. */
+    atomic_store(&g_mp.durable_lsn, appended_lsn);
 
     TEST_ASSERT_EQUAL_INT(0, commit_engine_init(&g_meng, &g_mp, n_peers, 8));
     repl_set_commit_engine(&g_mp.repl, &g_meng);