Add release build targets for hf

Makefile

@@ -0,0 +1,35 @@
+VERSION ?= dev
+BINARY := hf
+MAIN_PKG := ./cmd/hf
+LDFLAGS := -X git.hangman-lab.top/zhi/HarborForge.Cli/internal/commands.Version=$(VERSION)
+DIST_DIR := dist
+RELEASE_TARGETS := \
+	linux/amd64 \
+	linux/arm64 \
+	darwin/amd64 \
+	darwin/arm64 \
+	windows/amd64
+
+.PHONY: build clean release release-all
+
+build:
+	mkdir -p bin
+	go build -ldflags "$(LDFLAGS)" -o ./bin/$(BINARY) $(MAIN_PKG)
+
+clean:
+	rm -rf ./bin/$(BINARY) ./$(DIST_DIR)
+
+release: clean
+	mkdir -p $(DIST_DIR)
+	@set -e; \
+	for target in $(RELEASE_TARGETS); do \
+		os=$${target%/*}; \
+		arch=$${target#*/}; \
+		ext=""; \
+		if [ "$$os" = "windows" ]; then ext=".exe"; fi; \
+		out="$(DIST_DIR)/$(BINARY)_$(VERSION)_$${os}_$${arch}$${ext}"; \
+		echo "==> Building $$out"; \
+		GOOS=$$os GOARCH=$$arch go build -ldflags "$(LDFLAGS)" -o "$$out" $(MAIN_PKG); \
+	done
+
+release-all: release