Drop 3.13 from CI for now — 3.12 only until compatibility issues resolved

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: 2 people

.github/workflows/main.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.12', '3.13']
+        python-version: ['3.12']
     steps:
     - name: Checkout PyAutoConf
       uses: actions/checkout@v2

pyproject.toml

@@ -18,8 +18,7 @@ classifiers = [
   "Topic :: Scientific/Engineering :: Physics",
   "Natural Language :: English",
   "Operating System :: OS Independent",
-  "Programming Language :: Python :: 3.12",
-  "Programming Language :: Python :: 3.13"
+  "Programming Language :: Python :: 3.12"
 ]
 keywords = ["cli"]
 dependencies = [