fix: detect npx symlink entry point without .js extension

When run via npx, the bin symlink is named 'termbeam' (no .js),
so the endsWith('termbeam.js') check failed and the server never
started. Use path.basename() to match both 'termbeam' and
'termbeam.js'.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: dorlugasigal

src/server.js

@@ -47,7 +47,10 @@ function createTermBeamServer(overrides = {}) {
     res.setHeader('X-Frame-Options', 'DENY');
     res.setHeader('Referrer-Policy', 'no-referrer');
     res.setHeader('Cache-Control', 'no-store');
-    res.setHeader('Content-Security-Policy', "default-src 'self'; script-src 'self' 'unsafe-inline' https://cdn.jsdelivr.net; style-src 'self' 'unsafe-inline' https://cdn.jsdelivr.net; connect-src 'self' ws: wss:; font-src 'self' https://cdn.jsdelivr.net");
+    res.setHeader(
+      'Content-Security-Policy',
+      "default-src 'self'; script-src 'self' 'unsafe-inline' https://cdn.jsdelivr.net; style-src 'self' 'unsafe-inline' https://cdn.jsdelivr.net; connect-src 'self' ws: wss:; font-src 'self' https://cdn.jsdelivr.net",
+    );
     next();
   });
 
@@ -106,7 +109,8 @@ function createTermBeamServer(overrides = {}) {
         console.log('');
         console.log(`  Beam your terminal to any device 📡  v${config.version}`);
         console.log('');
-        const isLanReachable = config.host === '0.0.0.0' || config.host === '::' || config.host === ip;
+        const isLanReachable =
+          config.host === '0.0.0.0' || config.host === '::' || config.host === ip;
         const gn = '\x1b[38;5;114m'; // green
         const dm = '\x1b[2m'; // dim
 
@@ -159,7 +163,8 @@ function createTermBeamServer(overrides = {}) {
 module.exports = { createTermBeamServer };
 
 // Auto-start when run directly (CLI entry point)
-if (require.main === module || process.argv[1]?.endsWith('termbeam.js')) {
+const _entryBase = path.basename(process.argv[1] || '');
+if (require.main === module || _entryBase === 'termbeam' || _entryBase === 'termbeam.js') {
   const instance = createTermBeamServer();
 
   process.on('SIGINT', () => {