diff --git a/docs/deployment/coolify.md b/docs/deployment/coolify.md
index 966f131..a092849 100644
--- a/docs/deployment/coolify.md
+++ b/docs/deployment/coolify.md
@@ -65,6 +65,8 @@ Add these as **Runtime** environment variables in Coolify:
    ```
 8. Click **Create Resource**
 
+> **Note:** The frontend uses `requirements.txt` for production dependencies and `requirements-dev.txt` for development dependencies (like pytest). Nixpacks will automatically detect and install only the production dependencies.
+
 > **Important:** Nixpacks copies the **contents** of the Base Directory to `/app/` in the container. When Base Directory is `/frontend`, the `frontend/` folder wrapper is removed — only `app/`, `tests/`, and `requirements.txt` are copied. Therefore the start command uses `app.main:app` (not `frontend.app.main:app`).
 
 ### Frontend Environment Variables
diff --git a/frontend/app/main.py b/frontend/app/main.py
index b1da228..88a1c75 100644
--- a/frontend/app/main.py
+++ b/frontend/app/main.py
@@ -13,7 +13,7 @@ from flask import (
     url_for,
 )
 
-from frontend.app.config import Config
+from .config import Config
 
 app = Flask(__name__)
 app.config.from_object(Config)
diff --git a/frontend/requirements-dev.txt b/frontend/requirements-dev.txt
new file mode 100644
index 0000000..1d6ed5c
--- /dev/null
+++ b/frontend/requirements-dev.txt
@@ -0,0 +1,2 @@
+pytest
+pytest-mock
\ No newline at end of file
diff --git a/frontend/tests/test_frontend.py b/frontend/tests/test_frontend.py
index f98cd54..23b8568 100644
--- a/frontend/tests/test_frontend.py
+++ b/frontend/tests/test_frontend.py
@@ -6,7 +6,7 @@ from unittest.mock import MagicMock, patch
 os.environ.setdefault("FLASK_SECRET_KEY", "test-secret")
 os.environ.setdefault("BACKEND_URL", "http://backend-mock")
 
-from frontend.app.main import app  # noqa: E402
+from app.main import app  # noqa: E402
 
 
 @pytest.fixture