feat: 跨平台发布打包，支持 7 个目标平台交叉编译和 tar.gz 分发

- 新增 scripts/release.ts，支持 7 个编译目标（linux/darwin/windows + musl 变体）
- 从 build.ts 提取共享构建逻辑到 build-common.ts，现有 build 行为不变
- 使用 tar-stream + node:zlib 创建 tar.gz，精确控制 Unix 权限位
- SHA256 校验和文件格式兼容 sha256sum -c
- 支持 --target 参数选择特定平台编译
- 新增 devDependency: tar-stream、@types/tar-stream
- 更新 README.md 和 DEVELOPMENT.md 文档
- 同步 openspec specs

scripts/build.ts

@@ -1,14 +1,9 @@
-import { readdir, rm, writeFile } from "node:fs/promises";
-import { join, relative, sep } from "node:path";
-import { fileURLToPath } from "node:url";
+import { rm } from "node:fs/promises";
+import { join } from "node:path";
 
-import { validateVersion } from "./bump-version-logic";
+import { buildDir, cleanup, codeGeneration, projectRoot, viteBuild } from "./build-common";
 
-const projectRoot = fileURLToPath(new URL("..", import.meta.url));
-const distWebDir = join(projectRoot, "dist/web");
-const buildDir = join(projectRoot, ".build");
 const executablePath = join(projectRoot, "dist/dial-server");
-const packageJsonPath = join(projectRoot, "package.json");
 
 async function build() {
   try {
@@ -54,115 +49,4 @@ async function bunCompile() {
   }
 }
 
-async function cleanup() {
-  await rm(buildDir, { force: true, recursive: true });
-}
-
-async function codeGeneration() {
-  console.log("Step 2/3: Code generation...");
-  await rm(buildDir, { force: true, recursive: true });
-  await Bun.write(join(buildDir, ".gitkeep"), "");
-
-  const packageJson = (await Bun.file(packageJsonPath).json()) as { version: string };
-  const version = packageJson.version;
-  if (typeof version !== "string") {
-    console.error("package.json does not have a valid version field");
-    process.exit(1);
-  }
-  validateVersion(version);
-
-  const allFiles = await scanDir(distWebDir, "/");
-  const importLines: string[] = [];
-  const fileEntries: string[] = [];
-  let indexHtmlVar = "";
-
-  for (let i = 0; i < allFiles.length; i++) {
-    const urlPath = allFiles[i]!;
-    const varName = `f${i}`;
-    const filePath = toImportSpecifier(buildDir, join(distWebDir, urlPath.slice(1)));
-    importLines.push(`import ${varName} from "./${filePath}" with { type: "file" };`);
-
-    if (urlPath === "/index.html") {
-      indexHtmlVar = varName;
-    } else {
-      fileEntries.push(`  "${urlPath}": Bun.file(${varName}),`);
-    }
-  }
-
-  if (!indexHtmlVar) {
-    console.error("index.html not found in dist/web/");
-    process.exit(1);
-  }
-
-  const staticAssetsTs = [
-    `import type { StaticAssets } from "../src/server/static";`,
-    "",
-    ...importLines,
-    "",
-    `export const staticAssets: StaticAssets = {`,
-    `  files: {`,
-    ...fileEntries,
-    `  },`,
-    `  indexHtml: Bun.file(${indexHtmlVar}),`,
-    `};`,
-    "",
-  ].join("\n");
-
-  await writeFile(join(buildDir, "static-assets.ts"), staticAssetsTs);
-
-  const serverEntryTs = [
-    `import { bootstrap } from "../src/server/bootstrap";`,
-    `import { readRuntimeConfig } from "../src/server/config";`,
-    `import { staticAssets } from "./static-assets";`,
-    "",
-    `const APP_VERSION = "${version}" as const;`,
-    "",
-    `async function main() {`,
-    `  const { configPath } = readRuntimeConfig();`,
-    `  await bootstrap({ configPath, mode: "production", staticAssets, version: APP_VERSION });`,
-    `}`,
-    "",
-    `void main().catch((error) => {`,
-    `  console.error("启动失败:", error instanceof Error ? error.message : error);`,
-    `  process.exit(1);`,
-    `});`,
-    "",
-  ].join("\n");
-
-  await writeFile(join(buildDir, "server-entry.ts"), serverEntryTs);
-}
-
-async function scanDir(dir: string, prefix: string): Promise<string[]> {
-  const entries = await readdir(dir, { withFileTypes: true });
-  const paths: string[] = [];
-  for (const entry of entries) {
-    const fullPath = join(dir, entry.name);
-    const urlPath = `${prefix}${entry.name}`;
-    if (entry.isDirectory()) {
-      paths.push(...(await scanDir(fullPath, `${urlPath}/`)));
-    } else {
-      paths.push(urlPath);
-    }
-  }
-  return paths;
-}
-
-function toImportSpecifier(fromDir: string, targetPath: string) {
-  return relative(fromDir, targetPath).split(sep).join("/");
-}
-
-async function viteBuild() {
-  console.log("Step 1/3: Vite build...");
-  const proc = Bun.spawn(["bunx", "--bun", "vite", "build"], {
-    cwd: projectRoot,
-    stderr: "inherit",
-    stdout: "inherit",
-  });
-  const exitCode = await proc.exited;
-  if (exitCode !== 0) {
-    console.error("Vite build failed");
-    process.exit(1);
-  }
-}
-
 await build();