Update app.py

app.py

@@ -80,20 +80,20 @@ class HybridEmbeddings(Embeddings):
         return self._embed_texts([text])[0]
 
 # ============================================================
-# --- LLM INITIALIZATION ---
+# --- LLM INITIALIZATION 
 # ============================================================
 def initialize_llm():
     if not HF_TOKEN:
         raise ValueError("HF_TOKEN is not set; cannot initialize LLM.")
-    print("🔵 Initializing LLM: HuggingFaceHub (Mistral-7B)…")
+    print("🔵 Initializing LLM: Microsoft Phi…")
     try:
         llm = HuggingFaceHub(
-            repo_id="mistralai/Mistral-7B-Instruct-v0.2",
+            repo_id="microsoft/phi-2",
             huggingfacehub_api_token=HF_TOKEN,
             model_kwargs={"temperature": 0.7, "max_length": 4096},
             task="text-generation",
         )
-        print("✅ LLM (HuggingFace Mistral) initialized successfully.")
+        print("✅ LLM (Microsoft Phi) initialized successfully.")
         return llm
     except Exception as e:
         print("❌ Failed to initialize LLM:", e)