fixed file paths

app.py

@@ -8,11 +8,9 @@ import smtplib
 from email.message import EmailMessage
 
 # Make your repo importable (expecting a folder named causal-agent at repo root)
-sys.path.append(str(Path(__file__).parent / "causal-agent"))
-EXAMPLE_CSV_PATH = os.getenv(
-    "EXAMPLE_CSV_PATH",
-    str(Path(__file__).parent / "data" / "synthetic_data")
-)
+REPO_ROOT = Path(__file__).resolve().parents[1]  # go up one level from /app/app.py
+EXAMPLE_CSV_PATH = REPO_ROOT / "data" / "synthetic_data"
+
 from auto_causal.agent import run_causal_analysis  # uses env for provider/model
 
 # -------- LLM config (OpenAI only; key via HF Secrets) --------