feat(i18n): Simplified Chinese (zh-CN), search answers per locale, fr/de/es data fixes

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

public/exemplos/zh-CN/esp-nn.c

@@ -35,10 +35,10 @@ void app_main(void)
     esp_nn_mul_mat_16x8_16(weights, input, bias, output,
                            OUTPUT_SIZE, INPUT_SIZE, /*shift=*/0);
 
-    print_array("Antes da ReLU", output, OUTPUT_SIZE);
+    print_array("Before ReLU", output, OUTPUT_SIZE);
 
     // 应用 ReLU 激活函数
     esp_nn_relu_16(output, OUTPUT_SIZE);
 
-    print_array("Depois da ReLU", output, OUTPUT_SIZE);
+    print_array("After ReLU", output, OUTPUT_SIZE);
 }