PROBLEM: Runner never activated because Drift force-closes positions below
minimum size. TP2 would close 80% leaving 5% runner (~$105), but Drift
automatically closed the entire position.
SOLUTION:
1. Created runner-calculator.ts with canUseRunner() to check if remaining
size would be above Drift minimums BEFORE executing TP2 close
2. If runner not viable: Skip TP2 close entirely, activate trailing stop
on full 25% remaining (from TP1)
3. If runner viable: Execute TP2 as normal, activate trailing on 5%
Benefits:
- Runner system will now actually work for viable position sizes
- Positions that are too small won't try to force-close below minimums
- Better logs showing why runner did/didn't activate
- Trailing stop works on larger % if runner not viable (better R:R)
Example: $2100 position → $525 after TP1 → $105 runner = VIABLE
$4 ETH position → $1 after TP1 → $0.20 runner = NOT VIABLE
Runner will trail with ATR-based dynamic % (0.25-0.9%) below peak price.
