critical: Fix withdrawal statistics to use actual Drift deposits

- Query Drift Protocol's cumulativeDeposits for ground truth
- Discovered user deposited ,440.61 (not hardcoded 46)
- Previous withdrawals: ~26.78 (not tracked in ENV)
- Database P&L -.01 is correct
- Reconciliation: ,440.61 deposits - .01 P&L - 26.78 withdrawn = 11.82 current
- Available profit now shows current balance (includes all trading results)
- Created /api/drift/account-summary endpoint for account reconciliation
- Statistics now mathematically consistent and trustworthy

app/api/withdrawals/stats/route.ts

@@ -12,14 +12,23 @@ export async function GET() {
   try {
     const prisma = getPrismaClient()
     
-    // Get total invested (from roadmap: $546)
-    const totalInvested = 546
-    
-    // Get current Drift balance
+    // Get current Drift balance and actual deposits
     const driftService = await initializeDriftService()
     const health = await driftService.getAccountHealth()
     const currentBalance = health.freeCollateral // Already a number
     
+    // Get actual deposits from Drift Protocol (ground truth from blockchain)
+    const user = driftService.getUser()
+    const userAccount = user.getUserAccount()
+    const usdcSpotPosition = userAccount.spotPositions.find(
+      (pos: any) => pos.marketIndex === 0 // USDC market index
+    )
+    const cumulativeDeposits = usdcSpotPosition 
+      ? Number(usdcSpotPosition.cumulativeDeposits.toString()) / 1_000_000 
+      : 546 // Fallback to hardcoded if query fails (shouldn't happen)
+    
+    const totalInvested = cumulativeDeposits // Use actual deposits as "invested"
+    
     // Calculate total P&L from database
     const trades = await prisma.trade.findMany({
       where: {
@@ -36,7 +45,13 @@ export async function GET() {
     const totalWithdrawn = parseFloat(process.env.TOTAL_WITHDRAWN || '0')
     
     // Calculate available profit
-    const availableProfit = Math.max(0, currentBalance - totalInvested)
+    // Current balance is what's left after deposits + P&L - previous withdrawals
+    // Available profit = current balance (what we have now, which includes trading profit/loss)
+    const availableProfit = Math.max(0, currentBalance)
+    
+    // Calculate inferred previous withdrawals
+    // If deposits + P&L - current balance > 0, that's what was withdrawn
+    const inferredWithdrawals = Math.max(0, cumulativeDeposits + totalPnL - currentBalance)
     
     // Calculate next withdrawal amount
     const withdrawalPercent = parseFloat(process.env.WITHDRAWAL_PROFIT_PERCENT || '10')