Fix language detection and add manual toggle

components/MiniMaxVoiceWidgetV2.tsx

@@ -131,18 +131,30 @@ export default function MiniMaxVoiceWidget({
     setMessages(prev => [...prev, { role: "user", content: userText }]);
     setIsSpeaking(true);
     
-    // Detect language
-    const spanishWords = ["hola", "gracias", "por favor", "quiero", "necesito", "reserva", "precio", "dónde", "cuándo", "cómo", "cuánto", "tengo", "quiero", "busco", "necesito"];
-    const englishWords = ["hello", "thanks", "please", "want", "need", "book", "price", "where", "how", "much", "have", "looking"];
-    
-    const isSpanish = spanishWords.some(w => userText.toLowerCase().includes(w));
-    const isEnglish = englishWords.some(w => userText.toLowerCase().includes(w));
+    // Detect language - improved logic
+    // If user writes ANY English word, switch to English
+    const spanishPatterns = /^(hola|gracias|por| favor|quiero|necesito|reserva|precio|dónde|cuándo|cómo|cuánto|tengo|busco|qué|es|son|hay|me|puedo)\s/i;
+    const englishPatterns = /^(hello|thanks|please|want|need|book|price|where|how|much|have|can|i|my|your|the|a|an|is|are|do|does|what|who|when|where|why|how)\s/i;
     
     let detectedLang: Lang = language;
-    if (isSpanish && !isEnglish) detectedLang = "es";
-    else if (isEnglish && !isSpanish) detectedLang = "en";
-    else if (isSpanish && isEnglish && language === "es") detectedLang = "es";
     
+    // Check if it's clearly English (more inclusive)
+    const isEnglish = englishPatterns.test(userText.toLowerCase());
+    const isSpanish = spanishPatterns.test(userText.toLowerCase());
+    
+    // If user writes in English (more than 50% English letters or explicit English words)
+    if (!isSpanish && (isEnglish || /[a-z]{3,}/i.test(userText))) {
+      // More English characters or explicit English = English
+      const englishChars = (userText.match(/[a-zA-Z]/g) || []).length;
+      const spanishChars = (userText.match(/[áéíóúñü]/gi) || []).length;
+      if (englishChars > spanishChars * 2 || isEnglish) {
+        detectedLang = "en";
+      }
+    } else if (isSpanish) {
+      detectedLang = "es";
+    }
+    
+    // Update language if detected differently
     if (detectedLang !== language) {
       setLanguage(detectedLang);
     }
@@ -231,9 +243,13 @@ export default function MiniMaxVoiceWidget({
               <span className="text-xl">🤖</span>
               <span className="font-semibold text-white text-sm">Asistente SiteMente</span>
             </div>
-            <span className="text-xs text-white/70">
-              {language === "es" ? "ES" : "EN"}
-            </span>
+            <button
+              type="button"
+              onClick={() => setLanguage(language === "es" ? "en" : "es")}
+              className="px-2 py-1 bg-white/20 rounded text-xs text-white hover:bg-white/30 transition"
+            >
+              {language === "es" ? "🇪🇸 ES" : "🇺🇸 EN"}
+            </button>
           </div>
 
           {/* Messages */}