v0.5.84: matches origin filter, mobile gate, refresh reliability.

Ship Web refresh cache/lock, mobile demand gate, matches 职业/国服 filter, and related site updates through 0.5.84.

Co-authored-by: Cursor <cursoragent@cursor.com>

web/fetch_hero_matches.py

@@ -57,7 +57,7 @@ from concurrent.futures import ThreadPoolExecutor, as_completed
 from datetime import datetime, timezone
 
 from shared.grid import hero_table
-from shared.http_utils import download_icons, http_json
+from shared.http_utils import download_icons, http_json, write_json_atomic
 from shared.paths import DATA, ITEM_ICONS
 
 OPENDOTA = "https://api.opendota.com/api"
@@ -989,10 +989,7 @@ def write_out(
         "items": items_out,
         "by_hero": by_hero,
     }
-    path.parent.mkdir(parents=True, exist_ok=True)
-    path.write_text(
-        json.dumps(payload, ensure_ascii=False, indent=2) + "\n", encoding="utf-8"
-    )
+    write_json_atomic(path, payload)
 
 
 def needs_player_enrich(row: dict) -> bool: