Enhances type checking and import structure

Author: AndrewSazonov

pyproject.toml

@@ -151,6 +151,7 @@ select = [
   'I',   # Import sorting issues (e.g., unsorted imports)
   'S',   # Security-related issues (e.g., use of insecure functions or libraries)
   'W',   # General PEP 8 warnings (e.g., lines too long, trailing whitespace)
+  'TCH', # Type checking issues (e.g., incompatible types, missing type annotations)
 ]
 
 [tool.ruff.lint.isort]

src/easydiffraction/analysis/minimization.py

@@ -1,6 +1,7 @@
 # SPDX-FileCopyrightText: 2021-2025 EasyDiffraction Python Library contributors <https://github.com/easyscience/diffraction-lib>
 # SPDX-License-Identifier: BSD-3-Clause
 
+from typing import TYPE_CHECKING
 from typing import Any
 from typing import Dict
 from typing import List
@@ -14,7 +15,9 @@
 from easydiffraction.sample_models.sample_models import SampleModels
 
 from ..analysis.reliability_factors import get_reliability_inputs
-from .minimizers.minimizer_base import FitResults
+
+if TYPE_CHECKING:
+    from .minimizers.minimizer_base import FitResults
 from .minimizers.minimizer_factory import MinimizerFactory