Fix dependency resolution for Python 3.9 compatibility

- Change numpy constraint from >=2.0 to >=1.21.0 to support Python 3.9
- Change scikit-learn constraint from >=1.3.0 to >=1.3.0,<1.8.0 for better compatibility
- This allows the project to work with both Python 3.9 and 3.10+ while maintaining compatibility

The dependency resolver now works correctly for all supported Python versions.

Author: xRiskLab

pyproject.toml

@@ -45,10 +45,10 @@ classifiers = [
 ]
 
 dependencies = [
-    "numpy>=2.0",
+    "numpy>=1.21.0",
     "pandas>=1.3.0",
     "scipy>=1.7.0",
-    "scikit-learn>=1.3.0",
+    "scikit-learn>=1.3.0,<1.8.0",
     "rich>=13.7.0",
     "numba>=0.60.0",
     "packaging>=21.0",