chore: 工程工具 + CMake 修复

- tools/build.sh: 一键编译（支持 Release/Debug/ASan）
- tools/run_tests.sh: 运行测试
- tools/release.sh: 发布打包
- tools/format.sh: 代码格式化
- tools/clean.sh: 清理构建产物
- 修复 CMakeLists.txt: vde_compile_options 顺序错误
- 修复 src/CMakeLists.txt: 移除重复配置行

tools/format.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+set -euo pipefail
+
+echo "=== Clang Format ==="
+find src include tests examples -name "*.cpp" -o -name "*.h" | while read f; do
+    clang-format -i "$f" 2>/dev/null && echo "  formatted: $f" || true
+done
+echo "Done."