fix(correlation/bug3): emit pending orphans on B TTL expiry (v1.1.15)

cleanNetworkBufferByTTL was deleting pendingOrphans without emitting them,
causing silent data loss when a B event (network connection) expired while
A events were still waiting in the 500ms orphan delay buffer.

Fix: cleanNetworkBufferByTTL now returns []CorrelatedLog for forced orphans;
cleanExpired propagates them; ProcessEvent includes them in returned results.

TestBTTLExpiry_PurgesPendingOrphans extended to assert the orphan is actually
returned in ProcessEvent results (not just removed from internal state).

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

packaging/rpm/logcorrelator.spec

@@ -145,6 +145,13 @@ exit 0
 %config(noreplace) /etc/logrotate.d/logcorrelator
 
 %changelog
+* Thu Mar 05 2026 logcorrelator <dev@example.com> - 1.1.15-1
+- Fix(correlation/bug3): perte de donnees quand B expire avec des orphelins en attente
+  cleanNetworkBufferByTTL supprimait les pendingOrphans sans les emettre (perte silencieuse).
+  Desormais, les orphelins A sont retournes immediatement a l'appelant quand B expire,
+  et cleanExpired/ProcessEvent propagent ces resultats vers le sink.
+  Test: TestBTTLExpiry_PurgesPendingOrphans etendu pour verifier l'emission effective.
+
 * Thu Mar 05 2026 logcorrelator <dev@example.com> - 1.1.14-1
 - Fix(correlation/bug1): Keep-Alive sessions au-dela de TimeWindow ne correlent plus en orphelins
   Le matcher dans processSourceA utilisait eventsMatch (comparaison de timestamps) en mode