Implement Monlet MVP stack and UI updates

deploy/docker/agent.Dockerfile

@@ -0,0 +1,21 @@
+# Dockerized monlet-agent for the showcase / e2e stand only.
+# Production deployment uses a systemd-managed Go binary; do not use this image in prod.
+# Build context: repo root (we need ../agent).
+
+FROM golang:1.25-alpine AS builder
+WORKDIR /src
+ENV CGO_ENABLED=0 GOTOOLCHAIN=auto
+ARG MONLET_AGENT_VERSION=0.1.0
+COPY agent/go.mod agent/go.sum ./
+RUN go mod download
+COPY agent/ ./
+RUN go build -trimpath -ldflags="-s -w -X main.version=${MONLET_AGENT_VERSION}" -o /out/monlet-agent ./cmd/monlet-agent
+
+FROM ubuntu:24.04
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends ca-certificates \
+ && rm -rf /var/lib/apt/lists/*
+COPY --from=builder /out/monlet-agent /usr/local/bin/monlet-agent
+RUN mkdir -p /var/lib/monlet-agent /etc/monlet /opt/monlet/checks
+ENV MONLET_CONFIG=/etc/monlet/agent.toml
+ENTRYPOINT ["/bin/sh","-c","exec /usr/local/bin/monlet-agent -config \"$MONLET_CONFIG\""]