docs: add logging infrastructure section to CLAUDE.md

CLAUDE.md

@@ -379,6 +379,43 @@ Docker health check runs every 30 seconds and restarts container if unhealthy.
 
 **Key Point**: Individual DNS records are NOT created per deployment. The wildcard DNS and SSL are already configured, so Traefik automatically routes `{name}.ai.flexinit.nl` to the correct container based on hostname matching.
 
+## Logging Infrastructure
+
+AI Stack logging integrates with the existing monitoring stack at `logs.intra.flexinit.nl`.
+
+### Components
+
+| Component | Location | Purpose |
+|-----------|----------|---------|
+| Log-ingest | `http://ai-stack-log-ingest:3000` (dokploy-network) | Receives events from AI stacks, pushes to Loki |
+| Loki | `monitor-grafanaloki-qkj16i-loki-1` | Log storage |
+| Grafana | https://logs.intra.flexinit.nl | Visualization |
+| Dashboard | `/d/ai-stack-overview` | AI Stack metrics and logs |
+
+### Datasource UIDs (Grafana)
+- Loki: `af9a823s6iku8b`
+- Prometheus: `cf9r1fmfw9xxcf`
+
+### Configuration
+
+AI stacks send logs via environment variable:
+```
+LOG_INGEST_URL=http://ai-stack-log-ingest:3000/ingest
+```
+
+### Local Development
+
+The `logging-stack/` directory contains a standalone docker-compose for local testing:
+```bash
+cd logging-stack && docker-compose up -d
+```
+
+### Credentials
+
+Grafana service account token stored in BWS:
+- Key: `GRAFANA_OPENCODE_ACCESS_TOKEN`
+- BWS ID: `c77e58e3-fb34-41dc-9824-b3ce00da18a0`
+
 ## Project Status
 
 ✅ **Completed**: