fix: trend preview uses USDT profit, snapshot risk budget, and money RR across four exchanges

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

strategy_trend_register.py

@@ -249,6 +249,7 @@ def parse_trend_plan(cfg: dict, form_dict) -> tuple[Optional[dict], Optional[str
         leg_list = json.loads(leg_json)
     except Exception:
         leg_list = []
+    contract_size = float(market.get("contractSize") or 1)
     return {
         "symbol": symbol,
         "exchange_symbol": exchange_symbol,
@@ -271,6 +272,7 @@ def parse_trend_plan(cfg: dict, form_dict) -> tuple[Optional[dict], Optional[str
         "leg_amounts_json": leg_json,
         "grid": grid,
         "leg_amounts": leg_list,
+        "contract_size": contract_size,
     }, None
 
 
@@ -486,6 +488,12 @@ def enrich_trend_plan(cfg: dict, row) -> dict:
             d["floating_mark"] = None
     else:
         d["floating_pnl"] = d["floating_mark"] = None
+    get_cs = getattr(m, "get_contract_size", None)
+    if callable(get_cs):
+        try:
+            d["contract_size"] = float(get_cs(ex_sym))
+        except (TypeError, ValueError):
+            pass
     from strategy_snapshot_lib import attach_trend_dca_levels
 
     d = attach_trend_dca_levels(d)
@@ -1097,6 +1105,14 @@ def load_trend_page_context(conn, request_obj, cfg: dict) -> dict[str, Any]:
 
             trend_preview = _row(cfg, pr)
             preview_expires_ms = int(pr["expires_at_ms"])
+            get_cs = getattr(m, "get_contract_size", None)
+            if callable(get_cs) and not trend_preview.get("contract_size"):
+                try:
+                    trend_preview["contract_size"] = float(
+                        get_cs(trend_preview.get("exchange_symbol") or trend_preview.get("symbol") or "")
+                    )
+                except (TypeError, ValueError):
+                    pass
             trend_preview, trend_preview_levels = build_trend_preview_level_rows(trend_preview)
         elif pr:
             trend_preview_expired = True