fix: log sub-sitemap byte counts, add EN notification listing fallback

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

check_zipair.py

@@ -89,18 +89,33 @@ def get_notification_ids_from_sitemap() -> list[int]:
         print(f"Fetching {sitemap_url} …")
         xml = fetch(sitemap_url)
         if xml:
-            # sitemap index may reference sub-sitemaps — fetch those too
             sub_sitemaps = re.findall(r"<loc>(https?://[^<]*sitemap[^<]*)</loc>", xml)
             for sub in sub_sitemaps:
                 if sub not in (ZIPAIR_SITEMAP, ZIPAIR_SITEMAP_INDEX):
                     print(f"  Fetching sub-sitemap {sub} …")
-                    xml += fetch(sub)
+                    chunk = fetch(sub)
+                    print(f"    → {len(chunk)} bytes")
+                    xml += chunk
                     time.sleep(0.5)
             ids = [int(m) for m in re.findall(r"/notification/(\d+)", xml)]
             if ids:
                 ids = sorted(set(ids))
                 print(f"  Found {len(ids)} notification IDs (max={ids[-1]})")
                 return ids
+            print(f"  No notification IDs found in sitemap(s).")
+
+    # Fallback: EN notification listing page (IDs may be in HTML even if JS-rendered)
+    print("Trying EN notification listing page …")
+    html = fetch("https://www.zipair.net/en/notification/")
+    print(f"  → {len(html)} bytes")
+    ids = [int(m) for m in re.findall(r"/(?:en|ja|ko|th|zh-tw|zh-cn)/notification/(\d+)", html)]
+    if not ids:
+        # also try bare /notification/NNN pattern
+        ids = [int(m) for m in re.findall(r"/notification/(\d+)", html)]
+    if ids:
+        ids = sorted(set(ids))
+        print(f"  Found {len(ids)} notification IDs from listing page (max={ids[-1]})")
+        return ids
 
     return []