Add Haskell MVP BFF with mutation protocol and local compose stack.

Dockerfile

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+FROM haskell:9.10.3-slim-bookworm AS build
+
+RUN apt-get update \
+  && apt-get install -y --no-install-recommends \
+       libpq-dev \
+       pkg-config \
+       zlib1g-dev \
+       ca-certificates \
+  && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /src
+
+COPY nuthatch.cabal cabal.project ./
+RUN cabal update \
+  && cabal build --only-dependencies all
+
+COPY sql ./sql
+COPY app ./app
+COPY src ./src
+COPY test ./test
+
+RUN cabal build exe:nuthatch \
+  && mkdir -p /out \
+  && cp "$(cabal list-bin exe:nuthatch)" /out/nuthatch
+
+FROM debian:bookworm-slim AS runtime
+
+RUN apt-get update \
+  && apt-get install -y --no-install-recommends \
+       libpq5 \
+       ca-certificates \
+       curl \
+  && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+COPY --from=build /out/nuthatch /usr/local/bin/nuthatch
+COPY sql ./sql
+
+ENV NUTHATCH_LISTEN=0.0.0.0:8080 \
+    NUTHATCH_PUBLIC_BASE_URL=http://127.0.0.1:8080 \
+    NUTHATCH_JWT_SECRET=dev-only-change-me-to-a-long-random-string \
+    NUTHATCH_PG_CONN="host=postgres port=5432 user=nuthatch password=nuthatch dbname=nuthatch" \
+    NUTHATCH_REDIS_URL=redis://redis:6379/0 \
+    NUTHATCH_S3_ENDPOINT=http://minio:9000 \
+    NUTHATCH_S3_REGION=us-east-1 \
+    NUTHATCH_S3_BUCKET=nuthatch \
+    NUTHATCH_S3_ACCESS_KEY=minioadmin \
+    NUTHATCH_S3_SECRET_KEY=minioadmin \
+    NUTHATCH_S3_PATH_STYLE=true \
+    NUTHATCH_AUTH_MODE=dev
+
+EXPOSE 8080
+CMD ["nuthatch"]