Close DDD refactor and remove generated asset proxy

scripts/generate-spacetime-bindings.mjs

@@ -55,7 +55,7 @@ for (const target of selectedTargets) {
   await recreateTempDir(tempOutDir);
 
   console.log(`[spacetime:generate] 生成 ${target.name} bindings 到短路径: ${tempOutDir}`);
-  await run('spacetime', buildGenerateArgs(target, tempOutDir));
+  await generateBindings(target, tempOutDir);
 
   const fileCount = await countFiles(tempOutDir);
   if (fileCount === 0) {
@@ -141,7 +141,79 @@ function buildGenerateArgs(target, outDir) {
   return generateArgs;
 }
 
-function run(command, commandArgs) {
+async function generateBindings(target, outDir) {
+  const result = await run('spacetime', buildGenerateArgs(target, outDir), {
+    allowGeneratedFormatFailure: target.lang === 'rust',
+  });
+
+  if (result.generatedFormatFailed) {
+    // Windows 下 SpacetimeDB CLI 2.1.0 会把所有 Rust 文件一次性传给 formatter；
+    // 这里只接管“文件已生成但 CLI 格式化失败”的尾段，并仍然只同步生成目录。
+    console.warn(
+      `[spacetime:generate] ${target.name} bindings 已生成，但 SpacetimeDB CLI 自带格式化失败；改用短路径分批 rustfmt。`,
+    );
+    await formatRustBindings(outDir);
+  }
+}
+
+async function formatRustBindings(outDir) {
+  const rustFiles = await collectRustFiles(outDir);
+  if (rustFiles.length === 0) {
+    throw new Error(`Rust bindings 未生成任何 .rs 文件，无法格式化: ${outDir}`);
+  }
+
+  for (const chunk of chunkCommandArgs(rustFiles)) {
+    await run('rustfmt', ['--edition', '2024', ...chunk]);
+  }
+}
+
+async function collectRustFiles(dir) {
+  const files = [];
+  const entries = await readdir(dir, {withFileTypes: true});
+
+  for (const entry of entries) {
+    const entryPath = path.join(dir, entry.name);
+
+    if (entry.isDirectory()) {
+      files.push(...(await collectRustFiles(entryPath)));
+      continue;
+    }
+
+    if (entry.isFile() && entry.name.endsWith('.rs')) {
+      files.push(entryPath);
+    }
+  }
+
+  return files;
+}
+
+function chunkCommandArgs(argsToChunk) {
+  // Windows CreateProcess 受命令行长度限制；分批能避免 bindings 文件变多后再次失败。
+  const maxCommandLineChars = process.platform === 'win32' ? 20_000 : 100_000;
+  const chunks = [];
+  let current = [];
+  let currentLength = 0;
+
+  for (const arg of argsToChunk) {
+    const argLength = arg.length + 3;
+    if (current.length > 0 && currentLength + argLength > maxCommandLineChars) {
+      chunks.push(current);
+      current = [];
+      currentLength = 0;
+    }
+
+    current.push(arg);
+    currentLength += argLength;
+  }
+
+  if (current.length > 0) {
+    chunks.push(current);
+  }
+
+  return chunks;
+}
+
+function run(command, commandArgs, options = {}) {
   return new Promise((resolve, reject) => {
     const child = spawn(command, commandArgs, {
       cwd: REPO_ROOT,
@@ -171,13 +243,20 @@ function run(command, commandArgs) {
         return;
       }
 
-      if (output.includes('Could not format generated files')) {
+      const generatedFormatFailed = output.includes('Could not format generated files');
+
+      if (generatedFormatFailed && options.allowGeneratedFormatFailure) {
+        resolve({generatedFormatFailed});
+        return;
+      }
+
+      if (generatedFormatFailed) {
         reject(new Error(`${command} 生成后格式化失败。`));
         return;
       }
 
       if (code === 0) {
-        resolve();
+        resolve({generatedFormatFailed: false});
         return;
       }