critical: Bug #93 - Three-layer entry price validation with oracle fallback
Root Cause: quoteAssetAmount/baseAssetAmount division producing garbage entry prices
- Found 6 autosync records with impossible prices (.18, 6.30, 7.11, 116.24 for SOL)
- Drift SDK values can be corrupted during state transitions
Fix Layer 1 (lib/drift/client.ts):
- Added per-asset price range validation (SOL: 0-000, BTC: 0k-00k, ETH: 00-0k)
- Returns null for invalid prices
Fix Layer 2 (lib/trading/sync-helper.ts):
- Added validatedEntryPrice calculation with oracle fallback
- Falls back to Pyth oracle when calculated price is garbage
Fix Layer 3 (lib/trading/sync-helper.ts):
- Trade creation uses validatedEntryPrice in all 4 price fields
- entryPrice, peakPrice, maxFavorablePrice, maxAdversePrice
Documentation:
- Full Bug #93 added to COMMON_PITFALLS.md with code examples
- Quick Reference table updated
Cleaned: 6 garbage autosync records deleted from database
f57aa925b8