feat(swap): add smart_trade order type to order strategy create

- Add --order-type smart_trade and --sub-order-type mix_trade support
- Make --check-price optional (required for limit_order, omitted for smart_trade)
- Add --open-price, --quote-investment, --condition-orders options
- Update StrategyCreateParams interface: check_price optional, add condition_orders/quote_investment
- Update SKILL.md and cli-usage.md docs with smart_trade examples and parameter table

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/client/OpenApiClient.ts

@@ -127,7 +127,7 @@ export interface StrategyCreateParams {
   quote_token: string;
   order_type: string;
   sub_order_type: string;
-  check_price: string;
+  check_price?: string;
   open_price?: string;
   amount_in?: string;
   amount_in_percent?: string;
@@ -148,6 +148,8 @@ export interface StrategyCreateParams {
   priority_fee?: string;
   tip_fee?: string;
   custom_rpc?: string;
+  condition_orders?: StrategyConditionOrder[];
+  quote_investment?: string;
 }
 
 export interface StrategyCancelParams {