chore: add dependencies

src/bibapi/schemas/bookdata.py

@@ -1,3 +1,10 @@
+import json
+from dataclasses import dataclass, field
+from typing import Any, Optional, Union
+
+import regex
+
+
 @dataclass
 class BookData:
     ppn: str | None = None

src/bibapi/sru.py

@@ -7,14 +7,9 @@ from typing import Dict, Iterable, List, Optional, Tuple, Union
 import requests
 from requests.adapters import HTTPAdapter
 
-from src.shared.logging import log
-
 # centralized logging used via src.shared.logging
 from .schemas.bookdata import BookData
 
-log  # ensure imported logger is referenced
-
-
 # -----------------------
 # Dataclasses
 # -----------------------