feat(cli): migrate CLI to native Rust binary

packages/cli/bin/dbx.js

@@ -0,0 +1,44 @@
+#!/usr/bin/env node
+
+import { existsSync } from "node:fs";
+import { spawnSync } from "node:child_process";
+import { createRequire } from "node:module";
+import { dirname, join } from "node:path";
+
+const require = createRequire(import.meta.url);
+const platformPackages = {
+  "darwin-arm64": "@dbx-app/cli-darwin-arm64",
+  "darwin-x64": "@dbx-app/cli-darwin-x64",
+  "linux-arm64": "@dbx-app/cli-linux-arm64-gnu",
+  "linux-x64": "@dbx-app/cli-linux-x64-gnu",
+  "win32-arm64": "@dbx-app/cli-win32-arm64",
+  "win32-x64": "@dbx-app/cli-win32-x64",
+};
+
+const platformKey = `${process.platform}-${process.arch}`;
+const packageName = platformPackages[platformKey];
+if (!packageName) {
+  console.error(`Unsupported platform: ${platformKey}`);
+  process.exit(1);
+}
+
+let binary;
+try {
+  const packageJson = require.resolve(`${packageName}/package.json`);
+  binary = join(dirname(packageJson), "bin", process.platform === "win32" ? "dbx.exe" : "dbx");
+} catch {
+  console.error(`The optional package ${packageName} was not installed. Reinstall @dbx-app/cli without --no-optional.`);
+  process.exit(1);
+}
+
+if (!existsSync(binary)) {
+  console.error(`DBX CLI binary was not found at ${binary}`);
+  process.exit(1);
+}
+
+const result = spawnSync(binary, process.argv.slice(2), { stdio: "inherit", env: process.env });
+if (result.error) {
+  console.error(result.error.message);
+  process.exit(1);
+}
+process.exit(result.status ?? 1);