fix: resolve SL/TP order placement and orphaned cleanup issues

- Fixed Drift SDK initialization in place-order endpoint (NodeWallet vs Wallet)
- Added 2% minimum trigger distance validation in execute-drift endpoint
- Corrected orphaned order cleanup logic to cancel ALL orders when no position
- Resolved issue where SL/TP orders were immediately canceled due to insufficient distance
- Tested complete cycle: position entry → protective orders → orphaned cleanup

Orders now maintain proper 2% distance from market price and stay active.
Cleanup system correctly identifies and removes orphaned orders when positions close.

app/api/drift/place-order/route.js

@@ -24,7 +24,7 @@ export async function POST(request) {
     });
     
     // Import Drift SDK
-    const { DriftClient, initialize, MarketType, PositionDirection, OrderType, OrderTriggerCondition, Wallet, BN } = await import('@drift-labs/sdk');
+    const { DriftClient, initialize, MarketType, PositionDirection, OrderType, OrderTriggerCondition, BN } = await import('@drift-labs/sdk');
     const { Connection, Keypair } = await import('@solana/web3.js');
     
     // Setup connection and wallet
@@ -40,7 +40,10 @@ export async function POST(request) {
     
     const privateKeyArray = JSON.parse(process.env.SOLANA_PRIVATE_KEY);
     const keypair = Keypair.fromSecretKey(new Uint8Array(privateKeyArray));
-    const wallet = new Wallet(keypair);
+    
+    // Use the correct Wallet class like in cleanup endpoint
+    const { default: NodeWallet } = await import('@coral-xyz/anchor/dist/cjs/nodewallet.js');
+    const wallet = new NodeWallet(keypair);
     
     // Initialize Drift client
     const env = 'mainnet-beta';
@@ -49,12 +52,9 @@ export async function POST(request) {
       connection,
       wallet,
       programID: sdkConfig.DRIFT_PROGRAM_ID,
-      accountSubscription: {
-        type: 'polling',
-        accountLoader: {
-          commitment: 'confirmed'
-        }
-      }
+      opts: {
+        commitment: 'confirmed',
+      },
     });
     
     await driftClient.subscribe();