Add CI workflow, admin frontend, Prometheus/Grafana monitoring, Cloudflare cache rules and worker, Nginx config, CONTRIBUTING.md and update docker-compose.yml

docker-compose.yml

@@ -88,6 +88,26 @@ services:
     networks:
       - linearvoid-net
 
+  prometheus:
+    image: prom/prometheus
+    container_name: linearvoid-prometheus
+    restart: unless-stopped
+    volumes:
+      - ./monitoring/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
+    ports:
+      - "9090:9090"
+    networks:
+      - linearvoid-net
+
+  grafana:
+    image: grafana/grafana
+    container_name: linearvoid-grafana
+    restart: unless-stopped
+    ports:
+      - "3001:3000"
+    networks:
+      - linearvoid-net
+
 networks:
   linearvoid-net:
     driver: bridge