Fold chain/account/PnL hints into rules; hide dust sell-coin.

Move the three noisy help lines into 规则说明, and show 手动卖回币 only when trading-coin balance meets the exchange min size.

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

lib/hedge_plan/hedge_plan_register.py

@@ -1281,10 +1281,47 @@ def register_hedge_plan_routes(app: Flask, cfg: dict[str, Any]) -> None:
                 pass
         return jsonify(result)
 
+    @app.route("/api/hedge-plan/sell-coin-status")
+    @lr
+    def api_hedge_sell_coin_status():
+        """是否显示「手动卖回币」:交易户有币且 ≥ 现货最小卖出量(粉尘隐藏)."""
+        if not _hedge_enabled():
+            return jsonify({"ok": False, "sellable": False, "msg": "对冲模块未启用"})
+        ex = cfg.get("exchange_options") or cfg.get("exchange")
+        if ex is None:
+            return jsonify({"ok": False, "sellable": False, "msg": "交易所未配置"})
+        underlying = str(
+            request.args.get("underlying") or cfg.get("default_underly") or "ETH"
+        ).strip().upper()
+        if underlying not in ("ETH", "BTC"):
+            return jsonify({"ok": False, "sellable": False, "msg": "标的仅支持 ETH/BTC"})
+        from lib.options.options_spot_bridge_lib import (
+            fetch_trading_coin_available,
+            is_sellable_spot_coin,
+            spot_min_sell_sz,
+        )
+
+        avail = fetch_trading_coin_available(ex, underlying)
+        try:
+            avail_f = float(avail) if avail is not None else 0.0
+        except (TypeError, ValueError):
+            avail_f = 0.0
+        min_sz = float(spot_min_sell_sz(ex, underlying))
+        sellable = is_sellable_spot_coin(ex, underlying, avail_f)
+        return jsonify(
+            {
+                "ok": True,
+                "underlying": underlying,
+                "available": avail_f,
+                "min_sz": min_sz,
+                "sellable": bool(sellable),
+            }
+        )
+
     @app.route("/api/hedge-plan/sell-coin", methods=["POST"])
     @lr
     def api_hedge_sell_coin():
-        """手动卖回币:市价卖出交易账户全部可用标的币换 USDT."""
+        """手动卖回币:市价卖出交易账户全部可用标的币换 USDT(粉尘拒绝)."""
         if not _hedge_enabled():
             return jsonify({"ok": False, "msg": "对冲模块未启用"}), 400
         ex = cfg.get("exchange_options") or cfg.get("exchange")
@@ -1294,6 +1331,27 @@ def register_hedge_plan_routes(app: Flask, cfg: dict[str, Any]) -> None:
         underlying = str(data.get("underlying") or cfg.get("default_underly") or "ETH").strip().upper()
         if underlying not in ("ETH", "BTC"):
             return jsonify({"ok": False, "msg": "标的仅支持 ETH/BTC"}), 400
+        from lib.options.options_spot_bridge_lib import (
+            fetch_trading_coin_available,
+            is_sellable_spot_coin,
+            spot_min_sell_sz,
+        )
+
+        avail = fetch_trading_coin_available(ex, underlying)
+        try:
+            avail_f = float(avail) if avail is not None else 0.0
+        except (TypeError, ValueError):
+            avail_f = 0.0
+        if not is_sellable_spot_coin(ex, underlying, avail_f):
+            min_sz = spot_min_sell_sz(ex, underlying)
+            return jsonify(
+                {
+                    "ok": False,
+                    "msg": f"无足够 {underlying} 可卖(可用 {avail_f:g} · 最小 {min_sz:g})",
+                    "available": avail_f,
+                    "min_sz": min_sz,
+                }
+            ), 400
         conn = cfg["get_db"]()
         try:
             from lib.options.options_db import init_options_tables