Clean secrets and update Space app

.gitignore

@@ -0,0 +1,11 @@
+# environment variables
+.env
+.env.*
+
+# python cache
+__pycache__/
+*.pyc
+
+# virtual environments
+venv/
+.envrc

agent.py

@@ -75,6 +75,4 @@ class SubmissionAgent:
         try:
             return self.llm_client.generate(prompt)
         except Exception:
-            return "PLACEHOLDER"
-
-#git remote set-url origin https://abhi1294:notebooks@huggingface.co/spaces/abhi1294/Final_Assignment_Template
+            return "PLACEHOLDER"