Update Makefile for improved command execution and formatting

This commit modifies the Makefile to ensure consistent command execution by changing the directory context for the backend startup command. Additionally, it corrects formatting in the output messages for better readability. These changes contribute to a more robust development environment.

Makefile

@@ -42,7 +42,7 @@ dev:
 	docker-compose up -d
 	@echo "✅ Services started!"
 	@echo "   Backend: http://localhost:8000"
-	@echo "   Frontend: http://localhost:3000"  
+	@echo "   Frontend: http://localhost:3000"
 	@echo "   Langflow: http://localhost:7860"
 	@echo "   OpenSearch: http://localhost:9200"
 	@echo "   Dashboards: http://localhost:5601"
@@ -93,7 +93,7 @@ clean: stop
 backend:
 	@echo "🐍 Starting backend locally..."
 	@if [ ! -f .env ]; then echo "⚠️  .env file not found. Copy .env.example to .env first"; exit 1; fi
-	cd src && uv run python main.py
+	uv run python src/main.py
 
 frontend:
 	@echo "⚛️  Starting frontend locally..."
@@ -187,7 +187,7 @@ db-reset:
 	curl -X DELETE "http://localhost:9200/knowledge_filters" -u admin:$$(grep OPENSEARCH_PASSWORD .env | cut -d= -f2) || true
 	@echo "Indices reset. Restart backend to recreate."
 
-# Flow management  
+# Flow management
 flow-upload:
 	@echo "📁 Uploading flow to Langflow..."
 	@if [ -z "$(FLOW_FILE)" ]; then echo "Usage: make flow-upload FLOW_FILE=path/to/flow.json"; exit 1; fi