Add script to grant points by Supabase email

tests/test_grant_points.py

@@ -0,0 +1,22 @@
+from src.database.db_manager import DBManager
+
+
+def test_grant_points_by_supabase_email(tmp_path):
+    db = DBManager(str(tmp_path / "test.db"))
+    db.upsert_user(1001, "eraer")
+    with db._get_connection() as conn:  # noqa: SLF001
+        conn.execute(
+            """
+            UPDATE users
+            SET points = ?, supabase_email = ?
+            WHERE telegram_id = ?
+            """,
+            (50, "eraer031905@gmail.com", 1001),
+        )
+        conn.commit()
+
+    result = db.grant_points_by_supabase_email("eraer031905@gmail.com", 300)
+    assert result["ok"] is True
+    assert result["points_before"] == 50
+    assert result["points_added"] == 300
+    assert result["points_after"] == 350