总表保留近3天; 总表上方增加各列口径注释

update.sh

@@ -198,11 +198,14 @@ if os.path.exists(f):
     except Exception: pass
 old.setdefault('summary',[]); old.setdefault('detail',[])
 
-# 总表：同一 run_date 覆盖，否则新增
+# 总表：同一 run_date 覆盖，否则新增；保留最近 3 天
+SUMMARY_KEEP=3
 row={'date':run_date,'raw_orders':raw,'pkg':pkg,'relay_orders':relay,
      'has_click_orders':hasclick,'no_conv_orders':noconv,'no_click_orders':no_click}
+def dkey(s): return tuple(int(x) for x in s.split('/'))
 old['summary']=[r for r in old['summary'] if r.get('date')!=run_date]+[row]
-old['summary'].sort(key=lambda r:r['date'])
+old['summary'].sort(key=lambda r:dkey(r['date']))
+old['summary']=old['summary'][-SUMMARY_KEEP:]
 
 # 明细：先删掉同 dt 的旧数据，再加入本次；然后按 dt 保留最近 keep 天
 old['detail']=[d for d in old['detail'] if d.get('dt')!=prev_dt]+kib['detail']