feat: build infrastructure

Co-authored-by: Copilot <copilot@github.com>

scripts/release/build_platform.bat

@@ -0,0 +1,31 @@
+@echo off
+setlocal enabledelayedexpansion
+
+set ROOT_DIR=%~dp0\..\..
+pushd "%ROOT_DIR%"
+
+set PLATFORM=%1
+if "%PLATFORM%"=="" set PLATFORM=windows
+
+call mix deps.get
+if errorlevel 1 goto :error
+
+if not "%BDS_SKIP_TESTS%"=="1" (
+  call mix test
+  if errorlevel 1 goto :error
+)
+
+call set MIX_ENV=prod
+call mix release --overwrite bds
+if errorlevel 1 goto :error
+call mix release --overwrite bds_mcp
+if errorlevel 1 goto :error
+call mix bds.package %PLATFORM%
+if errorlevel 1 goto :error
+
+popd
+exit /b 0
+
+:error
+popd
+exit /b 1

scripts/release/build_platform.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")/../.." && pwd)
+PLATFORM=${1:-}
+
+if [[ -z "$PLATFORM" ]]; then
+  case "$(uname -s)" in
+    Darwin) PLATFORM="macos" ;;
+    Linux) PLATFORM="linux" ;;
+    *)
+      echo "Unsupported platform. Pass one of: macos, linux, windows" >&2
+      exit 1
+      ;;
+  esac
+fi
+
+cd "$ROOT_DIR"
+
+mix deps.get
+
+if [[ "${BDS_SKIP_TESTS:-0}" != "1" ]]; then
+  mix test
+fi
+
+MIX_ENV=prod mix release --overwrite bds
+MIX_ENV=prod mix release --overwrite bds_mcp
+MIX_ENV=prod mix bds.package "$PLATFORM"