init monlet repo with stage 0-2 (docs, contract, agent MVP)

deploy/README.md

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+# Deploy
+
+Deployment examples live here.
+
+Planned files:
+
+- Docker Compose for local development;
+- PostgreSQL service;
+- optional Prometheus scrape config;
+- optional Alertmanager config;
+- optional Grafana dashboard stub.
+
+No production-ready deployment files are implemented in Stage 0.
+
+Docker examples must not install Python, Node, or Go project dependencies on the host. Dependency installation belongs inside images/containers or repo-local development directories.

deploy/alertmanager/README.md

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+# Alertmanager
+
+Placeholder for optional Alertmanager integration examples.
+
+Planned examples:
+
+- receiver config for Monlet-originated alerts;
+- stable label conventions;
+- routing notes for avoiding duplicate notifications.

deploy/grafana/README.md

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+# Grafana
+
+Placeholder for Grafana dashboard examples.
+
+Planned dashboards:
+
+- agents alive/stale/dead;
+- check state counts;
+- open incidents;
+- notification outbox state;
+- server ingestion and notifier failures.

deploy/prometheus/README.md

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+# Prometheus
+
+Placeholder for Prometheus examples.
+
+Planned examples:
+
+- scrape Monlet agent `/metrics`;
+- scrape Monlet server `/metrics`;
+- sample rules that avoid duplicate alerting when `notification_owner = server`.