Shadow-mode client script and cutover doc correction

plugins/printers/api/asset_routes.py

@@ -1541,16 +1541,18 @@ def supplies_forecast():
         if not supplies:
             continue
         itemids = [s['itemid'] for s in supplies if s.get('itemid')]
-        history = service.gethistory(itemids, days=days)
+        history = service.getlevelhistory(itemids, days=days)
 
         analysed = []
         for supply in supplies:
             points = history.get(str(supply.get('itemid')), [])
-            detail = analyse(points)
+            # The live read is the level the report shows, so it is also the
+            # level the countdown is computed from - history lags a poll, and a
+            # row whose level and days-left came from different moments reads
+            # as broken.
+            detail = analyse(points, currentlevel=supply.get('level'))
             detail['name'] = supply.get('name')
             detail['color'] = supply.get('color')
-            # Trust the live read for the level; history can lag a poll behind.
-            detail['currentlevel'] = supply.get('level', detail['currentlevel'])
             analysed.append(detail)
 
         entry = {