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_item_counter_stats.py

@@ -33,6 +33,7 @@ import urllib.request
 from datetime import datetime, timezone
 
 from shared.grid import hero_table
+from shared.http_utils import write_json_atomic
 from shared.paths import DATA
 
 API = "https://api.opendota.com/api/explorer"
@@ -281,11 +282,7 @@ def main() -> None:
             min_games=args.min_games,
             min_cost=args.min_cost,
         )
-        args.out.parent.mkdir(parents=True, exist_ok=True)
-        args.out.write_text(
-            json.dumps(output, ensure_ascii=False, indent=2) + "\n",
-            encoding="utf-8",
-        )
+        write_json_atomic(args.out, output)
         nonempty = sum(bool(v) for v in output["by_hero"].values())
         print(
             f"done: {len(rows)} rows, {nonempty} heroes -> {args.out}",