cleanup and fix runtime bugs

iaai_scraper/core/utils.py

@@ -1,7 +1,5 @@
 import json
-import random
 import re
-import time
 from pathlib import Path
 from typing import Any, Iterable
 
@@ -12,18 +10,6 @@ def save_to_json(data: Any, filename: str | Path) -> None:
     path.write_text(json.dumps(data, ensure_ascii=False, indent=2), encoding="utf-8")
 
 
-def short_sleep(a: float = 0.10, b: float = 0.35) -> None:
-    time.sleep(random.uniform(a, b))
-
-
-def mask_email(email: str) -> str:
-    if "@" not in email:
-        return "***"
-    local, domain = email.split("@", 1)
-    safe_local = local[:2] + "***" if len(local) > 2 else local[:1] + "*"
-    return f"{safe_local}@{domain}"
-
-
 def first_non_empty(values: Iterable[Any]) -> Any | None:
     for value in values:
         if value not in (None, "", [], {}, ()):
@@ -38,6 +24,7 @@ PRICE_RE = re.compile(r"\$\s?([\d,]+(?:\.\d{1,2})?)")
 
 
 def deep_find_key(obj, target_keys: set[str], max_depth: int = 64, _depth: int = 0) -> list:
+    # Рекурсивно ищет значения по набору ключей в произвольном JSON-дереве.
     found = []
     if _depth >= max_depth:
         return found