fix(blocked-signals): Add 3-tier price fallback to prevent entryPrice=0

- Root cause: Pyth cache empty caused entryPrice=0 in BlockedSignal records
- Solution: getCurrentPrice() helper with Pyth → Drift oracle → TradingView fallback
- Updated 3 createBlockedSignal callsites (QUALITY, COOLDOWN, HOURLY_LIMIT)
- Impact: Enables accurate what-if analysis for threshold optimization
- Files: app/api/trading/check-risk/route.ts (added getCurrentPrice, updated 3 calls)
- Deployed: Nov 25, 2025 22:55 UTC (container verified running new code)
- Testing: Next blocked signal will verify entryPrice != 0 in database

app/api/trading/check-risk/route.ts

@@ -11,6 +11,8 @@ import { getInitializedPositionManager, ActiveTrade } from '@/lib/trading/positi
 import { getLastTradeTime, getLastTradeTimeForSymbol, getTradesInLastHour, getTodayPnL, createBlockedSignal } from '@/lib/database/trades'
 import { getPythPriceMonitor } from '@/lib/pyth/price-monitor'
 import { scoreSignalQuality, SignalQualityResult } from '@/lib/trading/signal-quality'
+import { initializeDriftService } from '@/lib/drift/client'
+import { SUPPORTED_MARKETS } from '@/config/trading'
 
 export interface RiskCheckRequest {
   symbol: string
@@ -33,6 +35,41 @@ export interface RiskCheckResponse {
   qualityReasons?: string[]
 }
 
+/**
+ * Get current price reliably using multiple fallback methods
+ * Priority: Pyth cache → Drift oracle → TradingView signal price
+ */
+async function getCurrentPrice(symbol: string, fallbackPrice?: number): Promise<number> {
+  // Try Pyth cache first (fastest)
+  const priceMonitor = getPythPriceMonitor()
+  const latestPrice = priceMonitor.getCachedPrice(symbol)
+  if (latestPrice?.price && latestPrice.price > 0) {
+    return latestPrice.price
+  }
+  
+  // Try Drift oracle (authoritative)
+  try {
+    const driftService = await initializeDriftService()
+    const marketConfig = SUPPORTED_MARKETS[symbol]
+    if (marketConfig && driftService) {
+      const oraclePrice = await driftService.getOraclePrice(marketConfig.driftMarketIndex)
+      if (oraclePrice > 0) {
+        return oraclePrice
+      }
+    }
+  } catch (error) {
+    console.warn('⚠️ Failed to get Drift oracle price:', error)
+  }
+  
+  // Fallback to TradingView signal price
+  if (fallbackPrice && fallbackPrice > 0) {
+    return fallbackPrice
+  }
+  
+  console.error('❌ Unable to get current price from any source')
+  return 0
+}
+
 /**
  * Position Scaling Validation
  * Determines if adding to an existing position is allowed
@@ -248,14 +285,13 @@ export async function POST(request: NextRequest): Promise<NextResponse<RiskCheck
       
       // Save blocked signal if we have metrics
       if (hasContextMetrics) {
-        const priceMonitor = getPythPriceMonitor()
+        const currentPrice = await getCurrentPrice(body.symbol, body.currentPrice)
-        const latestPrice = priceMonitor.getCachedPrice(body.symbol)
         
         await createBlockedSignal({
           symbol: body.symbol,
           direction: body.direction,
           timeframe: body.timeframe,
-          signalPrice: latestPrice?.price || 0,
+          signalPrice: currentPrice,
           atr: body.atr,
           adx: body.adx,
           rsi: body.rsi,
@@ -294,14 +330,13 @@ export async function POST(request: NextRequest): Promise<NextResponse<RiskCheck
         
         // Save blocked signal if we have metrics
         if (hasContextMetrics) {
-          const priceMonitor = getPythPriceMonitor()
+          const currentPrice = await getCurrentPrice(body.symbol, body.currentPrice)
-          const latestPrice = priceMonitor.getCachedPrice(body.symbol)
           
           await createBlockedSignal({
             symbol: body.symbol,
             direction: body.direction,
             timeframe: body.timeframe,
-            signalPrice: latestPrice?.price || 0,
+            signalPrice: currentPrice,
             atr: body.atr,
             adx: body.adx,
             rsi: body.rsi,
@@ -354,15 +389,14 @@ export async function POST(request: NextRequest): Promise<NextResponse<RiskCheck
         })
         
         // Get current price for the blocked signal record
-        const priceMonitor = getPythPriceMonitor()
+        const currentPrice = await getCurrentPrice(body.symbol, body.currentPrice)
-        const latestPrice = priceMonitor.getCachedPrice(body.symbol)
         
         // Save blocked signal to database for future analysis
         await createBlockedSignal({
           symbol: body.symbol,
           direction: body.direction,
           timeframe: body.timeframe,
-          signalPrice: latestPrice?.price || 0,
+          signalPrice: currentPrice,
           atr: body.atr,
           adx: body.adx,
           rsi: body.rsi,