added cache cleaning at starting

app.py

@@ -15,6 +15,9 @@ redis_client = redis.Redis(
     password=os.getenv("REDIS_PASSWORD")
 )
 
+# 🧹 Clear Redis DB on startup
+redis_client.flushdb()
+
 # Azure OpenAI client (only for chat, not embeddings anymore)
 client = AzureOpenAI(
     api_key=os.getenv("AZURE_OPENAI_API_KEY").strip(),
@@ -25,7 +28,6 @@ client = AzureOpenAI(
 CHAT_DEPLOYMENT = "gpt-4.1"   # your Azure chat deployment
 
 # 🚀 Better embedding model from HF
-# Good tradeoff between quality + performance
 embedder = SentenceTransformer("sentence-transformers/all-mpnet-base-v2")
 
 # Helper: get embedding from HF