fix: use .cjs extension for bin script to fix ES module compatibility

The package.json has "type": "module" but bin/hapi.js uses CommonJS
require() syntax. Renaming to .cjs forces Node.js to treat it as
CommonJS regardless of the package type setting.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

cli/bin/hapi.cjs

@@ -0,0 +1,48 @@
+#!/usr/bin/env node
+
+const { execFileSync } = require('child_process');
+const path = require('path');
+
+const platform = process.platform;
+const arch = process.arch;
+const pkgName = `@twsxtd/hapi-${platform}-${arch}`;
+
+function getBinaryPath() {
+    try {
+        // Try to find the platform-specific package
+        const pkgPath = require.resolve(`${pkgName}/package.json`);
+        const binName = platform === 'win32' ? 'hapi.exe' : 'hapi';
+        return path.join(path.dirname(pkgPath), 'bin', binName);
+    } catch (e) {
+        return null;
+    }
+}
+
+const binPath = getBinaryPath();
+
+if (!binPath) {
+    console.error(`Unsupported platform: ${platform}-${arch}`);
+    console.error('');
+    console.error('Supported platforms:');
+    console.error('  - darwin-arm64 (macOS Apple Silicon)');
+    console.error('  - darwin-x64 (macOS Intel)');
+    console.error('  - linux-arm64');
+    console.error('  - linux-x64');
+    console.error('  - win32-x64');
+    console.error('');
+    console.error('You can download the binary manually from:');
+    console.error('  https://github.com/anthropics/hapi/releases');
+    process.exit(1);
+}
+
+try {
+    execFileSync(binPath, process.argv.slice(2), { stdio: 'inherit' });
+} catch (e) {
+    // If the binary execution fails, exit with the same code
+    if (e.status !== undefined) {
+        process.exit(e.status);
+    }
+    // For other errors (e.g., binary not found), print and exit
+    console.error(`Failed to execute ${binPath}:`, e.message);
+    process.exit(1);
+}