Hub monitor: read-only OKX options positions aggregation (Phase B).

Expose /api/hub/options/snapshot from OKX instance and render options summary on hub monitor cards when the options capability is enabled.

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

lib/hub/hub_bridge.py

@@ -454,6 +454,21 @@ def register_hub_routes(app):
         except Exception as e:
             return jsonify({"ok": False, "msg": str(e)}), 500
 
+    @app.route("/api/hub/options/snapshot")
+    @_hub_auth_required
+    def api_hub_options_snapshot():
+        """中控监控：期权持仓 / 资金 / 本地统计（只读）。"""
+        fn = _ctx().get("options_snapshot_fn")
+        if not callable(fn):
+            return jsonify({"ok": True, "enabled": False})
+        try:
+            data = fn()
+            if not isinstance(data, dict):
+                data = {"ok": False, "enabled": True, "msg": "invalid snapshot"}
+            return jsonify(data)
+        except Exception as e:
+            return jsonify({"ok": False, "enabled": True, "msg": str(e)}), 500
+
     @app.route("/api/account_risk_status")
     @_hub_auth_required
     def api_account_risk_status():