Add PowerShell dev/test scripts and Windows-first README commands

README.md

@@ -12,20 +12,23 @@
 
 ```powershell
 # 1. 构建网关二进制到 bin/
-make build
+powershell -File scripts/build-gateway.ps1
+# 或：go build -o bin/gateway.exe ./cmd/gateway
 
 # 2. 安装前端依赖
 npm install
 
 # 3. 启动桌面端（自动构建网关并启动 Tauri dev）
-make dev
+powershell -File scripts/dev.ps1
+# 或直接：npm run tauri dev
 ```
 
 ## 测试
 
 ```powershell
-make test        # Go 单元测试与集成测试
-npm test         # 前端 vitest
+powershell -File scripts/test.ps1   # Go + 前端全部测试
+go test ./...                       # 仅 Go
+npm test                            # 仅前端
 npm run typecheck
 ```