chore: Replace appdirspackage with platformdirs (#1373)

## Summary by Sourcery

Replace usage of the deprecated appdirs package with platformdirs across
configuration and runtime settings handling.

Enhancements:
- Update settings directory resolution to use platformdirs instead of
appdirs.

Build:
- Replace appdirs dependency with platformdirs in project configuration
and constraints as needed.

Chores:
- Tidy pyproject metadata formatting in the classifiers list.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **Chores**
* Switched underlying platform directory provider used to determine the
default settings/save folder; existing environment-variable override and
versioned subfolder behavior remain unchanged.
* Removed legacy pinned package and updated dependency metadata to
reflect the new platform directory dependency across supported Python
versions.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: Czaki

package/PartSeg/state_store.py

@@ -5,8 +5,8 @@
 import os
 import sys
 
-import appdirs
 import packaging.version
+import platformdirs
 
 from PartSeg import APP_LAB, APP_NAME, __version__, parsed_version
 
@@ -28,7 +28,7 @@
 save_suffix = ""
 #: path to folder where save settings
 save_folder = os.path.join(
-    os.environ.get("PARTSEG_SETTINGS_DIR", appdirs.user_data_dir(APP_NAME, APP_LAB)),
+    os.environ.get("PARTSEG_SETTINGS_DIR", platformdirs.user_data_dir(APP_NAME, APP_LAB)),
     str(packaging.version.parse(__version__).base_version),
 )
 

pyproject.toml

@@ -17,7 +17,8 @@ classifiers = [
     "Development Status :: 3 - Alpha",
     "Framework :: napari",
     "Operating System :: OS Independent",
-    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3"
+    ,
     "Programming Language :: Python :: 3 :: Only",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
@@ -45,7 +46,7 @@ dependencies = [
     "QtAwesome!=1.2.0,>=1.0.3",
     "QtPy>=1.10.0",
     "SimpleITK>=2.1.0",
-    "appdirs>=1.4.4",
+    "platformdirs>=4.3.0",
     "czifile>=2019.5.22",
     "defusedxml>=0.6.0",
     "fonticon-fontawesome6>=6.1.1",

requirements/constraints_py3.10.txt

@@ -10,7 +10,7 @@ annotated-types==0.7.0
     # via pydantic
 app-model==0.4.0
     # via napari
-appdirs==1.4.4
+
     # via
     #   partseg (pyproject.toml)
     #   napari

requirements/constraints_py3.10_pydantic_1.txt

@@ -8,7 +8,7 @@ annotated-doc==0.0.4
     # via typer
 app-model==0.3.2
     # via napari
-appdirs==1.4.4
+
     # via
     #   partseg (pyproject.toml)
     #   napari

requirements/constraints_py3.11.txt

@@ -10,7 +10,7 @@ annotated-types==0.7.0
     # via pydantic
 app-model==0.4.0
     # via napari
-appdirs==1.4.4
+
     # via
     #   partseg (pyproject.toml)
     #   napari

requirements/constraints_py3.11_pydantic_1.txt

@@ -8,7 +8,7 @@ annotated-doc==0.0.4
     # via typer
 app-model==0.3.2
     # via napari
-appdirs==1.4.4
+
     # via
     #   partseg (pyproject.toml)
     #   napari

requirements/constraints_py3.12.txt

@@ -10,7 +10,7 @@ annotated-types==0.7.0
     # via pydantic
 app-model==0.4.0
     # via napari
-appdirs==1.4.4
+
     # via
     #   partseg (pyproject.toml)
     #   napari

requirements/constraints_py3.12_docs.txt

@@ -8,7 +8,7 @@ annotated-types==0.7.0
     # via pydantic
 app-model==0.4.0
     # via napari
-appdirs==1.4.4
+
     # via
     #   partseg (pyproject.toml)
     #   napari

requirements/constraints_py3.12_pydantic_1.txt

@@ -8,7 +8,7 @@ annotated-doc==0.0.4
     # via typer
 app-model==0.3.2
     # via napari
-appdirs==1.4.4
+
     # via
     #   partseg (pyproject.toml)
     #   napari

requirements/constraints_py3.13.txt

@@ -10,7 +10,7 @@ annotated-types==0.7.0
     # via pydantic
 app-model==0.4.0
     # via napari
-appdirs==1.4.4
+
     # via
     #   partseg (pyproject.toml)
     #   napari