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-iot-solution.c

@@ -24,7 +24,7 @@ static led_indicator_handle_t led_handle = NULL;
 /* 按键单击回调 */
 static void button_single_click_cb(void *arg, void *data)
 {
-    ESP_LOGI(TAG, "Evento: Clique Único detectado!");
+    ESP_LOGI(TAG, "Event: single click detected!");
     led_indicator_start(led_handle, BLINK_DOUBLE_FAST);
 }