feat: Add daily rate limit monitoring script

Purpose: Track RPC rate limiting and guide upgrade decision

Features:
- Last 24h summary (hits, recoveries, exhausted events)
- 7-day trend analysis
- Automated decision criteria:
  * >120 exhausted/day: UPGRADE IMMEDIATELY
  * 30-120/day: Monitor 24h more
  * 5-30/day: Acceptable with retry logic
  * <5/day: Keep free tier
- ROI calculator (potential savings vs upgrade cost)

Usage:
  bash scripts/monitor-rate-limits.sh

Run daily to track improvement after retry logic deployment.

Initial Results (Nov 15, 17:40):
- 0 exhausted events in last 24h (was 14/day before)
- Retry logic working perfectly
- Decision: Keep free tier, focus on profitability

Upgrade trigger: If exhausted stays >5/day after 48 hours monitoring

Files: scripts/monitor-rate-limits.sh

scripts/monitor-rate-limits.sh

@@ -0,0 +1,115 @@
+#!/bin/bash
+# Rate Limit Monitoring Script
+# Run daily to track improvement after retry logic deployment
+# Decision: Upgrade Helius if exhausted events stay >5/day after 48 hours
+
+echo "============================================"
+echo "Rate Limit Monitoring - $(date '+%Y-%m-%d %H:%M')"
+echo "============================================"
+echo ""
+
+# Last 24 hours
+echo "📊 LAST 24 HOURS:"
+docker exec trading-bot-postgres psql -U postgres -d trading_bot_v4 -t -c "
+SELECT 
+  '  Rate Limit Hits: ' || COUNT(*) || ' events (' || ROUND(COUNT(*)::numeric / 24, 1) || '/hour)'
+FROM \"SystemEvent\"
+WHERE \"eventType\" = 'rate_limit_hit'
+  AND \"createdAt\" > NOW() - INTERVAL '24 hours';
+
+SELECT 
+  '  Recoveries:      ' || COUNT(*) || ' events (' || ROUND(COUNT(*) * 100.0 / NULLIF((SELECT COUNT(*) FROM \"SystemEvent\" WHERE \"eventType\" = 'rate_limit_hit' AND \"createdAt\" > NOW() - INTERVAL '24 hours'), 0), 1) || '% recovery rate)'
+FROM \"SystemEvent\"
+WHERE \"eventType\" = 'rate_limit_recovered'
+  AND \"createdAt\" > NOW() - INTERVAL '24 hours';
+
+SELECT 
+  '  EXHAUSTED:       ' || COUNT(*) || ' events (' || ROUND(COUNT(*)::numeric / 24, 1) || '/hour) ⚠️'
+FROM \"SystemEvent\"
+WHERE \"eventType\" = 'rate_limit_exhausted'
+  AND \"createdAt\" > NOW() - INTERVAL '24 hours';
+"
+
+echo ""
+echo "📈 TREND (Last 7 days):"
+docker exec trading-bot-postgres psql -U postgres -d trading_bot_v4 -c "
+SELECT 
+  TO_CHAR(DATE_TRUNC('day', \"createdAt\"), 'Mon DD') as date,
+  COUNT(*) FILTER (WHERE \"eventType\" = 'rate_limit_hit') as hits,
+  COUNT(*) FILTER (WHERE \"eventType\" = 'rate_limit_recovered') as recovered,
+  COUNT(*) FILTER (WHERE \"eventType\" = 'rate_limit_exhausted') as exhausted
+FROM \"SystemEvent\"
+WHERE \"eventType\" LIKE 'rate_limit%'
+  AND \"createdAt\" > NOW() - INTERVAL '7 days'
+GROUP BY DATE_TRUNC('day', \"createdAt\")
+ORDER BY DATE_TRUNC('day', \"createdAt\") DESC
+LIMIT 7;
+"
+
+echo ""
+echo "🎯 DECISION CRITERIA:"
+echo ""
+
+# Get exhausted count last 24h
+EXHAUSTED=$(docker exec trading-bot-postgres psql -U postgres -d trading_bot_v4 -t -c "
+SELECT COUNT(*) 
+FROM \"SystemEvent\"
+WHERE \"eventType\" = 'rate_limit_exhausted'
+  AND \"createdAt\" > NOW() - INTERVAL '24 hours';
+" | xargs)
+
+EXHAUSTED_PER_HOUR=$(echo "scale=1; $EXHAUSTED / 24" | bc)
+
+echo "  Current exhausted rate: $EXHAUSTED events/day ($EXHAUSTED_PER_HOUR/hour)"
+echo ""
+
+if [ "$EXHAUSTED" -gt 120 ]; then
+    echo "  🔴 CRITICAL: >120 exhausted/day"
+    echo "     Action: UPGRADE IMMEDIATELY"
+    echo "     Impact: Orders failing, positions at risk"
+    echo "     Cost: \$49/month pays for itself with 1 saved trade/day"
+elif [ "$EXHAUSTED" -gt 30 ]; then
+    echo "  ⚠️  WARNING: 30-120 exhausted/day"
+    echo "     Action: Monitor for 24 more hours"
+    echo "     If no improvement: UPGRADE"
+elif [ "$EXHAUSTED" -gt 5 ]; then
+    echo "  ⚠️  ELEVATED: 5-30 exhausted/day"
+    echo "     Action: Acceptable with retry logic"
+    echo "     Continue monitoring, focus on profitability"
+else
+    echo "  ✅ HEALTHY: <5 exhausted/day"
+    echo "     Action: Keep free tier"
+    echo "     Focus on improving win rate and profitability"
+fi
+
+echo ""
+echo "💰 UPGRADE ROI ESTIMATE:"
+echo ""
+
+# Calculate potential savings
+POTENTIAL_SAVED=$(echo "scale=2; $EXHAUSTED * 5" | bc)  # Assume $5/failed trade
+UPGRADE_COST="1.63"  # $49/month = $1.63/day
+
+if [ "$EXHAUSTED" -gt 0 ]; then
+    ROI=$(echo "scale=1; $POTENTIAL_SAVED / $UPGRADE_COST" | bc)
+    echo "  Failed orders:     $EXHAUSTED/day"
+    echo "  Potential loss:    \$$POTENTIAL_SAVED/day (at \$5/failed trade)"
+    echo "  Upgrade cost:      \$$UPGRADE_COST/day"
+    echo "  ROI:               ${ROI}x"
+    
+    if (( $(echo "$ROI > 3" | bc -l) )); then
+        echo ""
+        echo "  💡 Upgrade pays for itself ${ROI}x over!"
+    fi
+else
+    echo "  No failed orders in last 24h - upgrade not needed yet"
+fi
+
+echo ""
+echo "📝 NOTES:"
+echo "  - Retry logic deployed: Nov 15, 2025 17:30 CET"
+echo "  - Monitor for 48 hours to see improvement"
+echo "  - Helius Developer: \$49/month (50 RPS vs 10 RPS)"
+echo "  - Run this daily: bash scripts/monitor-rate-limits.sh"
+echo ""
+echo "============================================"