build: add Linux web and backend bundle script

scripts/build-web-linux.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+BUILD_DIR="$ROOT_DIR/.builds/linux"
+BACKEND_DIR="$BUILD_DIR/backend"
+WEB_DIR="$BUILD_DIR/web_v1"
+
+# Override GOARCH when building for another Linux architecture, for example arm64.
+GOARCH="${GOARCH:-amd64}"
+
+rm -rf "$BACKEND_DIR" "$WEB_DIR"
+mkdir -p "$BACKEND_DIR" "$WEB_DIR"
+
+(
+  cd "$ROOT_DIR/backend"
+  go test ./...
+  CGO_ENABLED=0 GOOS=linux GOARCH="$GOARCH" go build -trimpath -o "$BACKEND_DIR/senlin-agent-api" ./cmd/api
+)
+
+(
+  cd "$ROOT_DIR/apps/web_v1"
+  npm run build
+  cp -R dist/. "$WEB_DIR/"
+)
+
+echo "Linux backend: $BACKEND_DIR/senlin-agent-api"
+echo "Web build: $WEB_DIR"