fix(strategy): add missing order_type/sub_order_type, condition_orders, and group_tag

- Add --order-type and --sub-order-type as required flags to order strategy create
  (server requires both; omitting them caused every create call to 400)
- Remove --side from strategy create (field no longer exists in the API)
- Make --open-price optional in strategy create (matches API spec)
- Fix --gas-price in strategy create to convert gwei→wei (consistent with swap)
- Add --condition-orders and --sell-ratio-type to swap command for
  take-profit/stop-loss conditions attached after a successful swap
- Add --group-tag (LimitOrder/STMix) to order strategy list
- Add --order-type to order strategy cancel
- Add StrategyConditionOrder interface; extend SwapParams with condition_orders
  and sell_ratio_type; add order_type/sub_order_type to StrategyCreateParams;
  remove side; add order_type to StrategyCancelParams
- Update docs/cli-usage.md: fix strategy create table, add chain fee requirement
  notes (SOL requires priority_fee+tip_fee; BSC requires gas_price), add
  condition_orders example and strategy_order_id response field, add
  TRADING_BOT_UNAVAILABLE error code

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

src/client/OpenApiClient.ts

@@ -85,6 +85,15 @@ export interface SwapParams {
   gas_price?: string;
   max_fee_per_gas?: string;
   max_priority_fee_per_gas?: string;
+  condition_orders?: StrategyConditionOrder[];
+  sell_ratio_type?: string;
+}
+
+export interface StrategyConditionOrder {
+  order_type: string;   // "profit_stop" | "loss_stop"
+  side: string;         // "sell"
+  price_scale: string;
+  sell_ratio: string;
 }
 
 export interface StrategyCreateParams {
@@ -92,9 +101,10 @@ export interface StrategyCreateParams {
   from_address: string;
   base_token: string;
   quote_token: string;
-  side: string;
-  open_price: string;
+  order_type: string;
+  sub_order_type: string;
   check_price: string;
+  open_price?: string;
   amount_in?: string;
   amount_in_percent?: string;
   limit_price_mode?: string;
@@ -118,6 +128,7 @@ export interface StrategyCancelParams {
   chain: string;
   from_address: string;
   order_id: string;
+  order_type?: string;
   close_sell_model?: string;
 }