ci: add cross-platform pytest checks

Author: pyuxiang

.github/workflows/format-check.yaml

@@ -1,11 +1,7 @@
 name: format-check
 on:
-  push:
-    paths:
-      - '**.py'
-  pull_request:
-    paths:
-      - '**.py'
+  - push
+  - pull_request
 
 jobs:
   build:
@@ -16,11 +12,11 @@ jobs:
         python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8  # v6.0.1
         with:
           fetch-depth: 0
 
-      - uses: astral-sh/setup-uv@v7
+      - uses: astral-sh/setup-uv@61cb8a9741eeb8a550a1b8544337180c0fc8476b  # v7.2.0
         with:
           python-version: ${{ matrix.python-version }}
           activate-environment: "true"
@@ -41,8 +37,29 @@ jobs:
 
       # Maximum retention period is 90 days
       - name: Save lockfile as build artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6.0.0
         with:
           name: uv.lock.${{ matrix.python-version }}
           path: uv.lock
           compression-level: 9
+
+  cross-platform-tests:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: ['ubuntu-24.04-arm', 'windows-latest']
+        #os: ['ubuntu-24.04-arm', 'windows-latest', 'windows-11-arm', 'macos-15-intel', 'macos-14']
+        python-version: ['3.8', '3.13']
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8  # v6.0.1
+        with:
+          fetch-depth: 0
+
+      - uses: astral-sh/setup-uv@61cb8a9741eeb8a550a1b8544337180c0fc8476b  # v7.2.0
+
+      - name: Run package tests
+        run: |
+          uvx --python 3.8 --isolated --with-editable . pytest
+          uvx --python 3.13 --isolated --with-editable . pytest