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_patches.py

@@ -38,7 +38,7 @@ import time
 import urllib.error
 from datetime import datetime, timedelta, timezone
 
-from shared.http_utils import http_bytes, http_json
+from shared.http_utils import http_bytes, http_json, write_json_atomic
 from shared.paths import ABILITY_ICONS, DATA, HERO_PORTRAITS, ITEM_ICONS
 
 PATCHES_LIST_URL = "https://www.dota2.com/datafeed/patchnoteslist?language=schinese"
@@ -430,13 +430,10 @@ def main() -> None:
     patches = fetch_patch_list(since_ts)
     print(f"  {len(patches)} patches in window", flush=True)
     if not patches:
-        OUT.parent.mkdir(parents=True, exist_ok=True)
-        OUT.write_text(
-            json.dumps({"meta": {}, "patches": [], "lookup": {}, "details": {}}, ensure_ascii=False, indent=2),
-            encoding="utf-8",
+        raise SystemExit(
+            "patch list returned no versions in the requested window; "
+            "keeping previous cache"
         )
-        print("no patches in window; wrote empty file", flush=True)
-        return
 
     cached = {} if args.force else load_existing_details()
     details: dict[str, dict] = {}
@@ -485,8 +482,7 @@ def main() -> None:
         "lookup": lookup,
         "details": details,
     }
-    OUT.parent.mkdir(parents=True, exist_ok=True)
-    OUT.write_text(json.dumps(payload, ensure_ascii=False, indent=2), encoding="utf-8")
+    write_json_atomic(OUT, payload)
     print(
         f"saved {len(patches)} patches, {len(details)} details -> {OUT}",
         flush=True,