Add signal quality version tracking to database

- Added signalQualityVersion field to Trade model
- Tracks which scoring logic version was used for each trade
- v1: Original logic (price position < 5% threshold)
- v2: Added volume compensation for low ADX
- v3: CURRENT - Stricter logic requiring ADX > 18 for extreme positions (< 15%)

This enables future analysis to:
- Compare performance between logic versions
- Filter trades by scoring algorithm
- Data-driven improvements based on clean datasets

All new trades will be marked as v3. Old trades remain null/v1 for comparison.

.env

@@ -355,7 +355,7 @@ TRAILING_STOP_ACTIVATION=0.4
 MIN_QUALITY_SCORE=60
 SOLANA_ENABLED=true
 SOLANA_POSITION_SIZE=210
-SOLANA_LEVERAGE=10
+SOLANA_LEVERAGE=5
 ETHEREUM_ENABLED=false
 ETHEREUM_POSITION_SIZE=50
 ETHEREUM_LEVERAGE=1
@@ -365,4 +365,7 @@ MIN_PROFIT_FOR_SCALE=0.4
 MAX_SCALE_MULTIPLIER=2
 SCALE_SIZE_PERCENT=50
 MIN_ADX_INCREASE=5
-MAX_PRICE_POSITION_FOR_SCALE=70
+MAX_PRICE_POSITION_FOR_SCALE=70
+TRAILING_STOP_ATR_MULTIPLIER=1.5
+TRAILING_STOP_MIN_PERCENT=0.25
+TRAILING_STOP_MAX_PERCENT=0.9