feat(smart-proxy): add socket-handler relay, fast-path port-only forwarding, metrics and bridge improvements, and various TS/Rust integration fixes

test/test.route-security-integration.ts

@@ -200,10 +200,11 @@ tap.test('route security with block list should work', async () => {
     client.connect(9993, '127.0.0.1');
   });
   
-  // Should connect then be immediately closed by security
+  // Connection should be blocked by security - either closed or error
   expect(events).toContain('connected');
-  expect(events).toContain('closed');
-  expect(result).toEqual('closed');
+  // Rust drops the stream immediately; client may see 'closed', 'error', or both
+  const wasBlocked = result === 'closed' || result === 'error';
+  expect(wasBlocked).toEqual(true);
   expect(targetServerConnections).toEqual(0);
   
   // Clean up