fixed buggies

ai.py

@@ -53,7 +53,7 @@ class LLMClient:
         """Generates embedding for the query (using OpenAI as default for simplicity)."""
         # Note: OpenRouter supports embedding models, usually openai/text-embedding-3-small
         response = self.client.embeddings.create(
-            model="openai/text-embedding-3-small",
+            model="qwen/qwen3-embedding-8b",
             input=text
         )
         return response.data[0].embedding