chore(poller): log CFWidget 404 headers and body

Add a warning-level diagnostic in fetch_page that, when api.cfwidget.com
returns HTTP 404, emits the response headers and body as JSON before
raising the usual NEMPException. The body is read inside the response
context (the 4xx branch otherwise raises before consuming it). Behavior
is otherwise unchanged: the 404 still raises NEMPException.

Author: Pyker

mod_polling/poller.py

@@ -95,6 +95,13 @@ async def fetch_page(self, url, timeout=10, decode_json=False, ratelimit=True, *
                             MAX_FETCH_ATTEMPTS,
                         )
                     elif 400 <= response.status < 500:
+                        if response.status == 404 and host == "api.cfwidget.com":
+                            body = await response.text()
+                            logger.warning(
+                                "CFWidget returned HTTP 404 for %s: %s",
+                                url,
+                                json.dumps({"headers": dict(response.headers), "body": body}),
+                            )
                         raise NEMPException(f"HTTP {response.status} for {url}")
                     else:
                         response.raise_for_status()