Merge branch 'xgboost'

# Conflicts:
#	.gitignore
#	README.md
#	cycles/backtest.py
#	main.py
#	pyproject.toml
#	uv.lock

.gitignore

@@ -1,13 +1,13 @@
 # ---> Python
+/data/*.db
+/credentials/*.json
 *.csv
 *.png
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]
 *$py.class
-
-# ignore credentils JSON
-/credentials/*.json
+/data/*.npy
 
 # C extensions
 *.so
@@ -179,5 +179,3 @@ README.md
 .vscode/launch.json
 data/btcusd_1-day_data.csv
 data/btcusd_1-min_data.csv
-
-frontend/