合约列表新增次日振幅字段

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

ft-app/app/routers/contracts.py

@@ -59,6 +59,20 @@ def contract_index(request: Request, db: Session = Depends(get_db)):
         if bar.contract not in contract_bars:
             contract_bars[bar.contract] = bar
 
+    # Next-day amplitude: mean of latest 5 diffs per contract
+    contract_next_amp = {}
+    for code in all_codes:
+        diffs = [
+            r[0] for r in
+            db.query(DailyBar.high - DailyBar.low)
+            .filter(DailyBar.contract == code)
+            .order_by(DailyBar.date.desc())
+            .limit(5)
+            .all()
+        ]
+        if len(diffs) >= 5:
+            contract_next_amp[code] = round(sum(diffs) / 5)
+
     template = request.app.state.templates.get_template("index.html")
     return HTMLResponse(
         template.render(
@@ -66,6 +80,7 @@ def contract_index(request: Request, db: Session = Depends(get_db)):
             active_nav="contracts",
             product_groups=product_groups,
             contract_bars=contract_bars,
+            contract_next_amp=contract_next_amp,
         )
     )