fix: harden drift verifier and validation flow

tests/setup.ts

@@ -46,6 +46,19 @@ jest.mock('../lib/utils/logger', () => ({
   },
 }))
 
+// Mock Drift SDK enums to avoid native bindings during tests
+jest.mock('@drift-labs/sdk', () => ({
+  MarketType: { PERP: 'perp' },
+  PositionDirection: { LONG: 'long', SHORT: 'short' },
+  OrderType: {
+    LIMIT: 'limit',
+    TRIGGER_LIMIT: 'trigger_limit',
+    TRIGGER_MARKET: 'trigger_market',
+    MARKET: 'market',
+  },
+  OrderTriggerCondition: { BELOW: 'below', ABOVE: 'above' },
+}))
+
 // Mock Drift service to avoid network calls
 jest.mock('../lib/drift/client', () => ({
   getDriftService: jest.fn(() => ({
@@ -80,12 +93,15 @@ jest.mock('../lib/notifications/telegram', () => ({
   sendPositionOpenedNotification: jest.fn(() => Promise.resolve()),
 }))
 
-// Mock Drift orders
-jest.mock('../lib/drift/orders', () => ({
-  closePosition: jest.fn(() => Promise.resolve({ success: true, realizedPnL: 0 })),
-  cancelAllOrders: jest.fn(() => Promise.resolve({ success: true, cancelledCount: 0 })),
-  placeExitOrders: jest.fn(() => Promise.resolve({ success: true })),
-}))
+// Mock Drift orders (keep real placeExitOrders for validation tests)
+jest.mock('../lib/drift/orders', () => {
+  const actual = jest.requireActual('../lib/drift/orders')
+  return {
+    ...actual,
+    closePosition: jest.fn(() => Promise.resolve({ success: true, realizedPnL: 0 })),
+    cancelAllOrders: jest.fn(() => Promise.resolve({ success: true, cancelledCount: 0 })),
+  }
+})
 
 // Mock market data cache
 jest.mock('../lib/trading/market-data-cache', () => ({