Remove --stop argument (not supported in llama.cpp CLI)

llm_clients/qwen_translator.py

@@ -356,8 +356,7 @@ class QwenTranslatorClient(LlmClient):
         if self.n_gpu_layers > 0:
             cmd.extend(["-ngl", str(self.n_gpu_layers)])
         
-        # Add stop sequences (llama.cpp uses --stop for each stop token)
-        cmd.extend(["--stop", "<|im_end|>", "--stop", "<|im_start|>"])
+        # Note: Stop sequences are handled in post-processing since --stop may not be available in all llama.cpp versions
         
         try:
             # Run the binary and capture output