Fix empty recommend list when CTP ticks unavailable off-hours.

Fall back to daily prev_close for margin estimates; keep previous cache when refresh gets all no_price; stop re-fetching only for missing turnover.

Co-authored-by: Cursor <cursoragent@cursor.com>

modules/trading/product_recommend.py

@@ -302,6 +302,21 @@ def list_product_recommendations(
             quote = quote_fn(ths) or {}
             price = quote.get("price")
             main_code = (quote.get("ths_code") or "").strip()
+            daily: dict = {}
+            if main_code:
+                daily = analyze_product_daily(main_code)
+            if not price or float(price or 0) <= 0:
+                for key in ("prev_close", "today_open", "price"):
+                    val = daily.get(key) if daily else None
+                    if val in (None, "", 0):
+                        continue
+                    try:
+                        px = float(val)
+                    except (TypeError, ValueError):
+                        continue
+                    if px > 0:
+                        price = px
+                        break
             row = assess_product_for_capital(
                 product, capital, price,
                 max_margin_pct=max_margin_pct,
@@ -311,8 +326,8 @@ def list_product_recommendations(
                 margin_used=margin_used,
             )
             row["main_code"] = main_code
-            if main_code:
-                row.update(analyze_product_daily(main_code))
+            if daily:
+                row.update(daily)
             _attach_turnover(row)
             return row
         except Exception as exc: