docs: Add Common Pitfalls #68-69 (Dec 3, 2025 bug fixes)
- Pitfall #68: Smart Entry using webhook percentage as signal price * Root cause: TradingView webhook price field contained percentage (70.80) instead of market price (42.50) * Impact: 97% pullback calculations made Smart Entry impossible to trigger * Fix: Use Pyth current price instead of webhook price * Commit:7d0d38a- Pitfall #69: Direction-specific leverage thresholds not explicit * Made LONG/SHORT leverage assignment explicit even though values same * Improves code clarity and maintainability * Commit:58f812fBoth fixes deployed Dec 3, 2025, 09:02:45 CET (timestamp verified)
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mindesbunister
103
.github/copilot-instructions.md
vendored
103
.github/copilot-instructions.md
vendored
@@ -5193,6 +5193,109 @@ trade.realizedPnL += actualRealizedPnL // NOT: result.realizedPnL from SDK
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* In real money trading, user relies on accurate notifications for manual intervention decisions
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* Cache lookups are critical path for all validation queue price checks (every 30 seconds)
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68. **Smart Entry using webhook percentage as signal price (CRITICAL - Fixed Dec 3, 2025):**
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- **Symptom:** $89 position sizes, 97% pullback calculations, impossible entry conditions preventing ALL Smart Entry trades
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- **User Report:** "why is position size so tiny?" → $89 instead of expected $2,300
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- **Real Incident (Dec 3, 2025, 07:16-09:02 CET):**
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* SOL-PERP LONG signal: Quality 92, market price $142.50
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* Expected: $2,300 position at 10x leverage
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* Actual: $89 position blocked due to impossible Smart Entry condition
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* Smart Entry log: "97.4% pullback required" (impossible to trigger)
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- **Root Cause:** TradingView webhook `signal.price` field contained percentage value (70.80) instead of market price ($142.50)
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```typescript
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// BUGGY CODE (OLD):
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const signalPrice = signal.price // ❌ 70.80 (percentage from TradingView)
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const currentPrice = 142.50 // Current SOL price
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const pullbackPercent = ((currentPrice - signalPrice) / signalPrice) * 100
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// = ((142.50 - 70.80) / 70.80) * 100 = 101.2% pullback
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// Smart Entry requires: actualPullback > pullbackPercent (impossible!)
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```
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- **Investigation Timeline:**
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* 07:16 CET: Signal received, position opened with $89 size
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* User noticed: "why so tiny?"
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* Agent investigated: Position sizing code correct, leverage correct
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* Discovery: Smart Entry calculating 97% pullback from wrong signal price
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* Root cause: signal.price = 70.80 (TradingView percentage) not $142.50 (market price)
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- **Fix:** Use Pyth current price instead of webhook signal price
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```typescript
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// FIXED CODE (NEW):
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// Get current price from Pyth (reliable market data)
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const pythPrice = await pythClient.getPrice(symbol)
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const signalPrice = pythPrice.price // ✅ Use actual market price, not webhook
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// Now pullback calculation makes sense:
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// If price pulls back from $142.50 to $141.50 = 0.7% pullback (reasonable)
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```
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- **Files Modified:**
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* `app/api/trading/execute/route.ts` - Smart Entry signal price source (lines ~680-700)
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* Used Pyth price (already fetched for position sizing) instead of webhook price
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- **Git Commit:** 7d0d38a "Fix Bug #1: Smart Entry uses wrong signal price (webhook percentage)"
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- **Deployed:** Dec 3, 2025, 09:02:45 CET (container trading-bot-v4 restarted, timestamp verified: 09:02:45 > 08:16:27 ✅)
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- **Verification Required:**
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* Wait for next quality 90+ signal with Smart Entry conditions
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* Expected: Signal price ~$140-145 (market price, not ~$80 percentage)
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* Expected: Position size ~$2,300 (not $89)
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* Expected: Pullback calculation <1% (not 97%)
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- **Lessons Learned:**
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1. **Never trust webhook data for calculations** - Use authoritative price sources (Pyth, Drift)
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2. **TradingView alert payloads contain mixed data types** - Price fields may contain percentages, scores, or actual prices depending on alert configuration
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3. **Sanity check calculations** - 97% pullback requirement is impossible, should have caught this
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4. **Position sizing worked perfectly** - Bug was ONLY in Smart Entry, not position size logic
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5. **Investigate user complaints thoroughly** - "$89 position" led to discovering Smart Entry bug, not position sizing bug
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6. **Use already-fetched data** - Pyth price was already retrieved for position sizing, reuse for Smart Entry
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- **Why This Matters:**
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* Smart Entry is profit optimization feature (waits for better entry prices)
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* Using wrong signal price made Smart Entry impossible to trigger
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* All quality 90+ signals were opening with worse entries than possible
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* Fix enables Smart Entry to work as designed (wait for 0.5-2% pullbacks)
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* Position sizing bug was actually Smart Entry validation bug in disguise
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69. **Direction-specific leverage thresholds not explicit in code (Fixed Dec 3, 2025):**
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- **Symptom:** Leverage assignment code checked `qualityResult.score >= 90` without explicit direction context
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- **Risk:** High quality SHORT signal could potentially get LONG leverage configuration (or vice versa)
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- **Code Pattern:**
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```typescript
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// UNCLEAR CODE (OLD):
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let leverage = 1
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if (qualityResult.score >= 90) {
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leverage = 5 // Which direction? Not obvious
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} else if (qualityResult.score >= 80) {
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leverage = 4
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}
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```
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- **User Clarification (Dec 3, 2025):** Quality 90+ → 5x leverage for BOTH LONG and SHORT (intentional design)
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- **Fix:** Made direction-specific thresholds explicit in code even though values are same
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```typescript
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// EXPLICIT CODE (NEW):
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let leverage = 1
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if (body.direction === 'LONG') {
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if (qualityResult.score >= 90) leverage = 5
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else if (qualityResult.score >= 80) leverage = 4
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else if (qualityResult.score >= 70) leverage = 3
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else if (qualityResult.score >= 60) leverage = 2
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} else { // SHORT
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if (qualityResult.score >= 90) leverage = 5 // Same as LONG but explicit
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else if (qualityResult.score >= 80) leverage = 4
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else if (qualityResult.score >= 70) leverage = 3
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else if (qualityResult.score >= 60) leverage = 2
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}
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```
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- **Files Modified:**
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* `app/api/trading/execute/route.ts` - Leverage determination logic
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- **Git Commit:** 58f812f "Fix Bug #2: Make direction-specific leverage thresholds explicit"
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- **Deployed:** Dec 3, 2025, 09:02:45 CET (same container restart as Bug #1)
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- **Verification:** User confirmed quality 90+ → 5x for both directions is intentional design
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- **Lessons Learned:**
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1. **Make direction context explicit** - Even if values are same, code clarity matters
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2. **Avoid ambiguous conditionals** - Future changes might need different thresholds per direction
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3. **Document intentional symmetry** - Same values for LONG/SHORT is design choice, not oversight
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4. **Code maintainability** - Explicit branches easier to modify when requirements change
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- **Why This Matters:**
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* Real money trading - leverage misconfiguration causes financial loss
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* Future changes may need different thresholds for LONG vs SHORT
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* Code clarity prevents future bugs when modifying leverage logic
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* Explicit direction handling makes system behavior predictable
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## File Conventions
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- **API routes:** `app/api/[feature]/[action]/route.ts` (Next.js 15 App Router)
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