Simplify translation prompt to reduce reasoning time

llm_clients/qwen_translator.py

@@ -12,7 +12,7 @@ from pathlib import Path
 from .base import LlmClient
 
 
-TRANSLATION_SYSTEM_INSTRUCTIONS = """You are a professional translator. Translate the user's text to English. Preserve the meaning, tone, and intent exactly. Return only the English translation, no additional commentary or explanation."""
+TRANSLATION_SYSTEM_INSTRUCTIONS = """Translate the text to English. Output only the translation, nothing else."""
 
 
 class QwenTranslatorClient(LlmClient):
@@ -316,6 +316,7 @@ class QwenTranslatorClient(LlmClient):
 
     def _build_translation_prompt(self, user_text: str) -> str:
         """Build a prompt for translation to English using Qwen's chat format."""
+        # Use a very simple, direct prompt to minimize reasoning
         prompt = f"""<|im_start|>system
 {TRANSLATION_SYSTEM_INSTRUCTIONS}<|im_end|>
 <|im_start|>user