fixed a small database issue with price drop tracking and added doc strings

src/monitor_utils/runner.py

@@ -243,6 +243,27 @@ async def execute_pagination(
     pagination_mode: str = "offset",
     **kwargs,
 ):
+    """Paginate a category by dispatching concurrent page or offset tasks to func.
+
+    Runs pages 2..N under a semaphore, retries failed pages with exponential
+    backoff, and logs any pages that still fail after retries.
+
+    Args:
+        category_identifier: Label used for logging only; not passed to func.
+        total_products: Total product count used to derive page count.
+        products_per_page: Page size used to derive page count and offsets.
+        func: Awaitable task invoked per page; receives session plus either
+            offset or page_number depending on pagination_mode.
+        session: HTTP session forwarded to each func call.
+        max_concurrent_tasks: Semaphore limit for concurrent page fetches.
+        start_offset: Base offset added when pagination_mode is offset.
+        pagination_mode: Either offset or page, selecting the kwarg sent to func.
+        **kwargs: Forwarded verbatim to every func call. Any identifier func
+            needs (category_id, category_name, category_path, or bestbuy's
+            query_category_id) must be supplied here, since naming varies
+            per monitor.
+    """
+
     LOGGER.info("executing pagination", extra={"category": category_identifier})
     total_pages = (int(total_products) + products_per_page - 1) // products_per_page
     semaphore = asyncio.Semaphore(max_concurrent_tasks)