Initial commit: Complete DevServer monitoring framework

- FastAPI application with OpenTelemetry instrumentation
- Redis caching and Celery task processing
- Docker Compose setup with monitoring stack
- Grafana dashboards and Prometheus metrics
- Jaeger distributed tracing
- Comprehensive documentation in docs/ folder
- Monitoring configuration and troubleshooting guides

monitoring/promtail-config.yaml

@@ -0,0 +1,44 @@
+server:
+  http_listen_port: 9080
+  grpc_listen_port: 0
+
+positions:
+  filename: /tmp/positions.yaml
+
+clients:
+  - url: http://loki:3100/loki/api/v1/push
+
+scrape_configs:
+  - job_name: docker
+    docker_sd_configs:
+      - host: unix:///var/run/docker.sock
+        refresh_interval: 5s
+    relabel_configs:
+      - source_labels: ['__meta_docker_container_name']
+        regex: '/(.*)'
+        target_label: 'container'
+      - source_labels: ['__meta_docker_container_name']
+        regex: '/(.*)'
+        target_label: 'container_name'
+      - source_labels: ['__meta_docker_container_name']
+        regex: '/(.*)'
+        target_label: 'job'
+      - source_labels: ['__meta_docker_container_name']
+        regex: '/(.*)'
+        replacement: '$1'
+        target_label: 'instance'
+    pipeline_stages:
+      - json:
+          expressions:
+            level: level
+            timestamp: timestamp
+            message: message
+            service: service
+      - labels:
+          level:
+          service:
+      - timestamp:
+          source: timestamp
+          format: '2006-01-02T15:04:05.000Z07:00'
+      - output:
+          source: message