refactor: split large modules and normalize rust layout

scripts/generate-spacetime-bindings.mjs

@@ -21,6 +21,14 @@ const TARGETS = [
       'src',
       'module_bindings',
     ),
+    entryFile: path.join(
+      REPO_ROOT,
+      'server-rs',
+      'crates',
+      'spacetime-client',
+      'src',
+      'module_bindings.rs',
+    ),
   },
 ];
 
@@ -64,6 +72,7 @@ for (const target of selectedTargets) {
 
   console.log(`[spacetime:generate] 同步 ${fileCount} 个文件到 ${target.outDir}`);
   await replaceGeneratedDir(tempOutDir, target.outDir);
+  await moveGeneratedEntryFile(target);
 }
 
 await rm(tempRoot, {recursive: true, force: true});
@@ -111,6 +120,23 @@ async function replaceGeneratedDir(fromDir, toDir) {
   }
 }
 
+async function moveGeneratedEntryFile(target) {
+  if (!target.entryFile) {
+    return;
+  }
+
+  assertInside(target.entryFile, REPO_ROOT, '生成入口文件');
+  const generatedModFile = path.join(target.outDir, 'mod.rs');
+
+  if (!existsSync(generatedModFile)) {
+    throw new Error(`${target.name} bindings 缺少入口文件: ${generatedModFile}`);
+  }
+
+  await rm(target.entryFile, {force: true});
+  await cp(generatedModFile, target.entryFile, {force: true});
+  await rm(generatedModFile, {force: true});
+}
+
 function assertInside(candidate, parent, label) {
   const relative = path.relative(path.resolve(parent), path.resolve(candidate));
   if (relative === '' || relative.startsWith('..') || path.isAbsolute(relative)) {