fix(pitch-deck): hoist textLang const out of fetch object literal

Syntax error: const declaration was inside the options object.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

pitch-deck/components/ChatFAB.tsx

@@ -154,12 +154,10 @@ export default function ChatFAB({
     ttsAbortRef.current = controller
 
     try {
+      const textLang = /[äöüÄÖÜß]|(?:^|\s)(?:das|die|der|und|ist|wir|ein|für|mit|auf|von|den|des)\s/i.test(cleanText) ? 'de' : lang
       const res = await fetch('/api/presenter/tts', {
         method: 'POST',
         headers: { 'Content-Type': 'application/json' },
-        // Detect response language from text content (not UI language)
-        // German text typically contains umlauts, ß, or common German words
-        const textLang = /[äöüÄÖÜß]|(?:^|\s)(?:das|die|der|und|ist|wir|ein|für|mit|auf|von|den|des)\s/i.test(cleanText) ? 'de' : lang
         body: JSON.stringify({ text: cleanText, language: textLang }),
         signal: controller.signal,
       })