修复GitHub Actions构建配置

主要修复：
1. 将所有构建输出改为zip格式打包
2. 解压后直接得到reality-checker可执行文件
3. 修复upload-artifact v3 deprecated警告，升级到v4
4. 更新Release说明，反映新的zip格式

技术改进：
- 使用zip -j参数确保解压后文件在根目录
- 为Linux/macOS文件添加执行权限
- 构建后自动清理临时文件
- 统一所有平台使用zip格式，简化用户使用

Author: V2RaySSR综合网

.github/workflows/build.yml

@@ -44,22 +44,38 @@ jobs:
         LDFLAGS="-X RealityChecker/internal/version.Version=$VERSION -X RealityChecker/internal/version.Commit=$COMMIT -X RealityChecker/internal/version.BuildTime=$BUILD_TIME"
         
         # Linux AMD64
-        GOOS=linux GOARCH=amd64 go build -ldflags "$LDFLAGS" -o dist/reality-checker-linux-amd64 .
+        GOOS=linux GOARCH=amd64 go build -ldflags "$LDFLAGS" -o reality-checker .
+        chmod +x reality-checker
+        zip -j dist/reality-checker-linux-amd64.zip reality-checker
+        rm reality-checker
         
         # Linux ARM64
-        GOOS=linux GOARCH=arm64 go build -ldflags "$LDFLAGS" -o dist/reality-checker-linux-arm64 .
+        GOOS=linux GOARCH=arm64 go build -ldflags "$LDFLAGS" -o reality-checker .
+        chmod +x reality-checker
+        zip -j dist/reality-checker-linux-arm64.zip reality-checker
+        rm reality-checker
         
         # Windows AMD64
-        GOOS=windows GOARCH=amd64 go build -ldflags "$LDFLAGS" -o dist/reality-checker-windows-amd64.exe .
+        GOOS=windows GOARCH=amd64 go build -ldflags "$LDFLAGS" -o reality-checker.exe .
+        zip -j dist/reality-checker-windows-amd64.zip reality-checker.exe
+        rm reality-checker.exe
         
         # Windows ARM64
-        GOOS=windows GOARCH=arm64 go build -ldflags "$LDFLAGS" -o dist/reality-checker-windows-arm64.exe .
+        GOOS=windows GOARCH=arm64 go build -ldflags "$LDFLAGS" -o reality-checker.exe .
+        zip -j dist/reality-checker-windows-arm64.zip reality-checker.exe
+        rm reality-checker.exe
         
         # macOS AMD64
-        GOOS=darwin GOARCH=amd64 go build -ldflags "$LDFLAGS" -o dist/reality-checker-darwin-amd64 .
+        GOOS=darwin GOARCH=amd64 go build -ldflags "$LDFLAGS" -o reality-checker .
+        chmod +x reality-checker
+        zip -j dist/reality-checker-darwin-amd64.zip reality-checker
+        rm reality-checker
         
         # macOS ARM64 (Apple Silicon)
-        GOOS=darwin GOARCH=arm64 go build -ldflags "$LDFLAGS" -o dist/reality-checker-darwin-arm64 .
+        GOOS=darwin GOARCH=arm64 go build -ldflags "$LDFLAGS" -o reality-checker .
+        chmod +x reality-checker
+        zip -j dist/reality-checker-darwin-arm64.zip reality-checker
+        rm reality-checker
         
         # 显示构建结果
         ls -la dist/
@@ -80,30 +96,32 @@ jobs:
           
           ### 下载说明
           
-          请根据您的操作系统和架构选择对应的文件：
+          请根据您的操作系统和架构选择对应的zip文件：
           
           **Linux:**
-          - `reality-checker-linux-amd64` - Linux x86_64
-          - `reality-checker-linux-arm64` - Linux ARM64
+          - `reality-checker-linux-amd64.zip` - Linux x86_64
+          - `reality-checker-linux-arm64.zip` - Linux ARM64
           
           **Windows:**
-          - `reality-checker-windows-amd64.exe` - Windows x86_64
-          - `reality-checker-windows-arm64.exe` - Windows ARM64
+          - `reality-checker-windows-amd64.zip` - Windows x86_64
+          - `reality-checker-windows-arm64.zip` - Windows ARM64
           
           **macOS:**
-          - `reality-checker-darwin-amd64` - macOS Intel
-          - `reality-checker-darwin-arm64` - macOS Apple Silicon
+          - `reality-checker-darwin-amd64.zip` - macOS Intel
+          - `reality-checker-darwin-arm64.zip` - macOS Apple Silicon
           
           ### 使用方法
           
-          1. 下载对应您系统的可执行文件
-          2. 给文件添加执行权限（Linux/macOS）：
+          1. 下载对应您系统的zip文件
+          2. 解压zip文件
+          3. 解压后得到 `reality-checker`（Linux/macOS）或 `reality-checker.exe`（Windows）
+          4. 运行程序：
              ```bash
-             chmod +x reality-checker-*
-             ```
-          3. 运行程序：
-             ```bash
-             ./reality-checker-* check example.com
+             # Linux/macOS
+             ./reality-checker check example.com
+             
+             # Windows
+             reality-checker.exe check example.com
              ```
           
           ### 校验文件
@@ -136,7 +154,7 @@ jobs:
 
     - name: Upload artifacts (for non-tag builds)
       if: "!startsWith(github.ref, 'refs/tags/')"
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: reality-checker-builds
         path: dist/