move llms to core package

scripts/build-core.js

@@ -0,0 +1,23 @@
+#!/usr/bin/env node
+
+const { execSync } = require('child_process');
+const path = require('path');
+const fs = require('fs');
+
+console.log('Building Core package (@musistudio/llms)...');
+
+try {
+  const coreDir = path.join(__dirname, '../packages/core');
+
+  // Build using the core package's build script
+  console.log('Building core package (CJS and ESM)...');
+  execSync('pnpm build', {
+    stdio: 'inherit',
+    cwd: coreDir
+  });
+
+  console.log('Core package build completed successfully!');
+} catch (error) {
+  console.error('Core package build failed:', error.message);
+  process.exit(1);
+}