Add Docker Compose Lingma bootstrap support

Package the proxy for Docker Compose deployments and add Lingma bootstrap, session restore, and runtime status support for containerized remote usage.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Dockerfile

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+FROM golang:1.23.6 AS build
+
+WORKDIR /src
+COPY go.mod go.sum ./
+RUN go mod download
+COPY . .
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o /out/lingma-proxy ./cmd/lingma-ipc-proxy
+
+FROM debian:bookworm-slim
+RUN apt-get update && apt-get install -y --no-install-recommends ca-certificates wget && rm -rf /var/lib/apt/lists/*
+WORKDIR /app
+COPY --from=build /out/lingma-proxy /usr/local/bin/lingma-proxy
+EXPOSE 8095
+CMD ["lingma-proxy", "--host", "0.0.0.0", "--port", "8095", "--backend", "remote"]