feat: mo_data.py unified read layer (DB-first, JSON fallback) + cash_log table + batch JSON→DB migration (16 files)

data_freshness.py

@@ -19,6 +19,7 @@
 
 import json, os
 from datetime import datetime, timedelta
+from mo_data import read_portfolio, read_decisions, read_watchlist
 
 LIVE_PRICES_PATH = "/home/hmo/web-dashboard/data/live_prices.json"
 PORTFOLIO_PATH = "/home/hmo/web-dashboard/data/portfolio.json"
@@ -61,7 +62,7 @@ def check_fresh():
         # fallback: portfolio.json
         if os.path.exists(PORTFOLIO_PATH):
             try:
-                pf = json.load(open(PORTFOLIO_PATH))
+                pf = mo_data.read_portfolio()
                 pf_time = pf.get("updated_at", "")
                 if not pf_time:
                     return False, "portfolio.json updated_at 为空"