test: add pytest test files (were missing from previous commit)

tests/conftest.py

@@ -0,0 +1,13 @@
+import pytest
+
+from app.core.cookies import load_cookies
+from app.core.exceptions import CookiesError
+
+
+@pytest.fixture
+def cookies():
+    """Load Fragment cookies, skip the test if they are unavailable."""
+    try:
+        return load_cookies()
+    except CookiesError as exc:
+        pytest.skip(f"Cookies unavailable — {exc}")