Fix: Update MULTILINGUAL_VOICES mapping for Vietnamese TTS support

ai_ext.py

@@ -381,7 +381,7 @@ def _short_script(post) -> str:
     text = post.get("text", "") or post.get("title", "")
     text = re.sub(r"^[•\-\*]\s*", "", text, flags=re.M)
     text = re.sub(r"\s*\n\s*", ". ", text)
-    return _clean_text(text)[:1000]
+    return _clean_text(text)[:2000]  # Increased from 1000 to 2000 for full content
 
 
 # ===== SCRAPER FUNCTIONS (required by ai_patch.py) =====