fix(hub): show trend plan leverage, base, ratio, mark and floating PnL

Position and trend plan cards read sizing from trend_pullback_plans; merge agent mark/PnL; compute position_ratio_pct in hub enrich.

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

strategy_trend_register.py

@@ -352,6 +352,13 @@ def enrich_trend_plan_for_hub(cfg: dict, raw: dict) -> dict:
                 d["planned_rr"] = float(rr)
     except (TypeError, ValueError, KeyError):
         pass
+    try:
+        snap = float(d.get("snapshot_available_usdt") or 0)
+        margin = float(d.get("plan_margin_capital") or 0)
+        if snap > 0 and margin > 0:
+            d["position_ratio_pct"] = round(margin / snap * 100.0, 2)
+    except (TypeError, ValueError):
+        pass
     return d