feat: enhance data handling and model training features

- Updated .gitignore to include .venv and .worktrees.
- Removed symlink for the virtual environment.
- Added new parquet files for dogeusdt, trxusdt, and xrpusdt datasets.
- Introduced model files and training logs for dogeusdt, trxusdt, and xrpusdt.
- Enhanced fetch_history.py to support caching of correlation symbols.
- Updated train_and_deploy.sh to manage correlation cache directory.

scripts/train_and_deploy.sh

@@ -68,6 +68,7 @@ else
 fi
 
 DECAY="${TIME_WEIGHT_DECAY:-2.0}"
+CORR_CACHE_DIR="data/.corr_cache"
 
 echo ""
 echo "========================================"
@@ -106,6 +107,7 @@ for SYM in "${TARGETS[@]}"; do
         --symbol "$SYM" \
         --interval 15m \
         --days "$FETCH_DAYS" \
+        --corr-cache-dir "$CORR_CACHE_DIR" \
         $UPSERT_FLAG
 
     # === [1.5/3] OI 파생 피처 A/B 비교 ===
@@ -154,6 +156,9 @@ for SYM in "${TARGETS[@]}"; do
     echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
 done
 
+# 상관 심볼 캐시 정리
+rm -rf "$CORR_CACHE_DIR"
+
 echo ""
 echo "=== 전체 파이프라인 완료: $(date '+%Y-%m-%d %H:%M:%S %Z') ==="
 echo ""