feat: Add on-chain TP/SL order placement

- Add placeExitOrders() to create reduce-only LIMIT orders for TP1, TP2, and SL
- Orders now visible in Drift UI
- Tested with real tiny position (0 base x 5x = 0)
- All 3 exit orders placed successfully on-chain
- Position manager continues monitoring as backup
- Added test script and results documentation

config/trading.ts

@@ -32,6 +32,9 @@ export interface TradingConfig {
   // Execution
   useMarketOrders: boolean // true = instant execution
   confirmationTimeout: number // Max time to wait for confirmation
+  // Take profit size splits (percentages of position to close at TP1/TP2)
+  takeProfit1SizePercent: number
+  takeProfit2SizePercent: number
 }
 
 export interface MarketConfig {
@@ -71,6 +74,8 @@ export const DEFAULT_TRADING_CONFIG: TradingConfig = {
   // Execution
   useMarketOrders: true, // Use market orders for reliable fills
   confirmationTimeout: 30000, // 30 seconds max wait
+  takeProfit1SizePercent: 75,
+  takeProfit2SizePercent: 100,
 }
 
 // Supported markets on Drift Protocol
@@ -165,6 +170,12 @@ export function getConfigFromEnv(): Partial<TradingConfig> {
     takeProfit2Percent: process.env.TAKE_PROFIT_2_PERCENT 
       ? parseFloat(process.env.TAKE_PROFIT_2_PERCENT) 
       : undefined,
+    takeProfit1SizePercent: process.env.TAKE_PROFIT_1_SIZE_PERCENT
+      ? parseFloat(process.env.TAKE_PROFIT_1_SIZE_PERCENT)
+      : undefined,
+    takeProfit2SizePercent: process.env.TAKE_PROFIT_2_SIZE_PERCENT
+      ? parseFloat(process.env.TAKE_PROFIT_2_SIZE_PERCENT)
+      : undefined,
     maxDailyDrawdown: process.env.MAX_DAILY_DRAWDOWN 
       ? parseFloat(process.env.MAX_DAILY_DRAWDOWN) 
       : undefined,