docs: add monitoring alerting updates

docs/roadmap.md

@@ -51,6 +51,7 @@ Completed components:
 * Grafana
 * Node Exporter
 * cAdvisor
+* Alertmanager
 
 Validation:
 
@@ -58,6 +59,14 @@ Validation:
 * Prometheus targets validated
 * Grafana datasource connected to Prometheus
 * Initial dashboards created and validated
+* Alertmanager email routing validated
+
+Alerting:
+
+* Incident grouping implemented
+* Severity-based routing implemented
+* Alert deduplication implemented
+* Multi-recipient email alerts implemented
 
 ---
 
@@ -257,7 +266,7 @@ Planned
 Current backup status:
 
 ```text
-Backup v2 operational
+Backup v5.3 production
 ```
 
 Completed:
@@ -269,6 +278,10 @@ Completed:
 * Automatic cleanup
 * Backup metrics export
 * Restore validation
+* Lock file protection
+* Disk space validation
+* Central logging
+* Structured failure handling
 
 ---
 
@@ -288,7 +301,9 @@ Completed:
 * Prometheus
 * Node Exporter
 * cAdvisor
+* Alertmanager
 * Backup metrics integration
+* Incident intelligence
 
 ---
 
@@ -303,7 +318,7 @@ Items:
 
 Completed:
 
-* Backup v2 automation
+* Backup v5.3 automation
 * Restore validation
 
 ---
@@ -340,4 +355,5 @@ Each roadmap item should receive documentation before deployment:
 * docs/security.md
 * docs/network.md
 * docs/backups.md
+* docs/monitoring.md
 * docs/decisions.md