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/rust-esp.rs

@@ -33,7 +33,7 @@ fn main() -> ! {
 
     let delay = Delay::new(&clocks);
 
-    println!("🦀 Firmware Rust Bare-Metal inicializado no ESP32!");
+    println!("🦀 Rust bare-metal firmware initialized on ESP32!");
 
     let mut counter: u32 = 0;