fix(webui): stabilize and localize timespiral

aw-server/apply_webui_ru_patch.sh

@@ -17,6 +17,8 @@ SERVICE_WORKER="$WEBUI_DIR/service-worker.js"
 TS=$(date +%Y%m%d%H%M%S)
 TRENDS_NEEDLE='this.activityStore.query_category_time_by_period(r)'
 TRENDS_REPLACEMENT='this.activityStore.ensure_loaded(r)'
+TIMESPIRAL_NEEDLE='start:new Date("2022-08-08")'
+TIMESPIRAL_REPLACEMENT='start:new Date(Date.now()-12*36e5)'
 
 [[ -f "$PATCH_JS_SRC" ]] || { echo "missing $PATCH_JS_SRC" >&2; exit 1; }
 [[ -f "$SW_CLEANUP_SRC" ]] || { echo "missing $SW_CLEANUP_SRC" >&2; exit 1; }
@@ -53,4 +55,25 @@ else
   echo "Trends hotfix skipped: chunk not found"
 fi
 
+timespiral_chunk="$(grep -Rsl "$TIMESPIRAL_NEEDLE" "$WEBUI_DIR/js"/*.js 2>/dev/null | head -n 1 || true)"
+if [[ -n "$timespiral_chunk" ]]; then
+  cp "$timespiral_chunk" "$timespiral_chunk.bak.$TS"
+  python3 - "$timespiral_chunk" "$TIMESPIRAL_NEEDLE" "$TIMESPIRAL_REPLACEMENT" <<'PY'
+from pathlib import Path
+import sys
+
+path = Path(sys.argv[1])
+old = sys.argv[2]
+new = sys.argv[3]
+content = path.read_text()
+if old in content:
+    path.write_text(content.replace(old, new, 1))
+    print(f"Timespiral hotfix applied to {path}")
+else:
+    print(f"Timespiral hotfix already present in {path}")
+PY
+else
+  echo "Timespiral hotfix skipped: chunk not found"
+fi
+
 echo "RU patch applied to $WEBUI_DIR"