docs: add Grafana + Loki monitoring to architecture and runbook

- monitoring.healix360.net → Grafana (admin / Global@2026)
- Loki collects Docker container logs via loki-docker-driver plugin
- Updated topology diagram with loki, grafana, and all URL mappings

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docs/developer-operations-runbook.md

@@ -12,6 +12,9 @@ Caddy (reverse proxy, TLS, host-routed)
     ├── global.engage.healix360.net   → sidecar-global:4100
     ├── telephony.engage.healix360.net → telephony:4200
     ├── *.app.healix360.net           → server:4000 (platform)
+    ├── monitoring.healix360.net      → grafana:3000
+    ├── operations.healix360.net      → woodpecker-server:8000
+    ├── git.healix360.net             → gitea:3000
     └── engage.healix360.net          → 404 (no catchall)
 
 Docker Compose stack (EC2 — 13.234.31.194):
@@ -28,7 +31,9 @@ Docker Compose stack (EC2 — 13.234.31.194):
     ├── db                 — PostgreSQL 16 (workspace-per-schema)
     ├── clickhouse         — Analytics
     ├── minio              — S3-compatible object storage
-    └── redpanda           — Event bus (Kafka-compatible)
+    ├── redpanda           — Event bus (Kafka-compatible)
+    ├── loki               — Log aggregation (receives from Docker logging driver)
+    └── grafana            — Monitoring dashboards (Loki + ClickHouse data sources)
 ```
 
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@@ -77,6 +82,9 @@ eval $EC2_SSH hostname
 | Ramaiah Platform | `https://ramaiah.app.healix360.net` |
 | Global Platform | `https://global.app.healix360.net` |
 | Telephony Dispatcher | `https://telephony.engage.healix360.net` |
+| Monitoring (Grafana) | `https://monitoring.healix360.net` |
+| CI/CD (Woodpecker) | `https://operations.healix360.net` |
+| Git (Gitea) | `https://git.healix360.net` |
 
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