Add pre-built keysender binary to avoid build issues

.npmrc

@@ -0,0 +1,2 @@
+build-from-source=false
+prefer-offline=true

package.json

@@ -18,12 +18,13 @@
     "lint:fix": "eslint src --ext .ts --fix",
     "format": "prettier --write \"src/**/*.{ts,js}\" \"test/**/*.js\"",
     "format:check": "prettier --check \"src/**/*.{ts,js}\" \"test/**/*.js\"",
-    "prepare": "husky"
+    "prepare": "husky",
+    "postinstall": "node scripts/postinstall.js || true"
   },
   "dependencies": {
     "@modelcontextprotocol/sdk": "^1.11.2",
     "clipboardy": "^4.0.0",
-    "keysender": "^2.3.0",
+    "keysender": "^2.2.0",
     "sharp": "^0.34.1",
     "ulid": "^3.0.0",
     "uuid": "^11.1.0",

scripts/postinstall.js

@@ -0,0 +1,27 @@
+#!/usr/bin/env node
+
+import fs from 'fs';
+import path from 'path';
+import { fileURLToPath } from 'url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+console.log('[postinstall] Copying pre-built keysender binary...');
+
+const sourceDir = path.join(__dirname, '..', 'prebuilt', 'keysender');
+const targetDir = path.join(__dirname, '..', 'node_modules', 'keysender', 'build', 'Release');
+const sourceFile = path.join(sourceDir, 'key_sender.node');
+const targetFile = path.join(targetDir, 'key_sender.node');
+
+// Create target directory if it doesn't exist
+fs.mkdirSync(targetDir, { recursive: true });
+
+// Copy the pre-built binary
+try {
+  fs.copyFileSync(sourceFile, targetFile);
+  console.log('[postinstall] Successfully copied key_sender.node');
+} catch (error) {
+  console.error('[postinstall] Error copying pre-built binary:', error.message);
+  // Don't exit with error - allow npm to continue
+}