feat: trend pullback preview TP per DCA leg with unified stop loss across exchanges

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

crypto_monitor_gate_bot/app.py

@@ -5607,15 +5607,11 @@ def render_main_page(page="trade"):
             ).fetchone()
             now_ms = int(time.time() * 1000)
             if pr and int(pr["expires_at_ms"] or 0) >= now_ms:
+                from strategy_trend_lib import build_trend_preview_level_rows
+
                 trend_preview = row_to_dict(pr)
                 preview_expires_ms = int(pr["expires_at_ms"])
-                try:
-                    grid = json.loads(trend_preview.get("grid_prices_json") or "[]")
-                    legs = json.loads(trend_preview.get("leg_amounts_json") or "[]")
-                except Exception:
-                    grid, legs = [], []
-                for i, pair in enumerate(zip(grid, legs), 1):
-                    trend_preview_levels.append({"i": i, "price": pair[0], "contracts": pair[1]})
+                trend_preview, trend_preview_levels = build_trend_preview_level_rows(trend_preview)
             elif pr:
                 trend_preview_expired = True
     strategy_extra = {}