fix(runtime): prevent memory leaks and improve shutdown/stream handling across services

changelog.md

@@ -1,5 +1,15 @@
 # Changelog
 
+## 2026-02-19 - 6.13.2 - fix(runtime)
+prevent memory leaks and improve shutdown/stream handling across services
+
+- Add CertProvisionScheduler.clear() to reset in-memory backoff cache and call it during DcRouter shutdown
+- Stop any existing SmartAcme instance before creating a new one (await stop and log errors) to avoid duplicate running instances
+- Null out many DcRouter service references and clear certificateStatusMap on shutdown to allow GC of stopped services
+- Cap emailMetrics.recipients map size and trim to ~80% of MAX_TOP_DOMAINS to prevent unbounded growth
+- Await virtualStream.sendData in logs follow handler and clear the interval if the stream errors/closes to avoid interval leaks
+- Limit normalizedMacCache size and evict oldest entries when it exceeds 10000 to prevent unbounded cache growth
+
 ## 2026-02-18 - 6.13.1 - fix(dcrouter)
 enable PROXY protocol v1 handling for SmartProxy when remoteIngress is enabled to preserve client IPs