P0跨平台暂存问题解决

.github/workflows/solver-regression.yml

@@ -8,6 +8,7 @@ on:
       - "requirements.txt"
       - "constraints/**"
       - ".python-version"
+      - ".gitattributes"
       - "README.md"
       - ".github/workflows/solver-regression.yml"
   pull_request:
@@ -17,6 +18,7 @@ on:
       - "requirements.txt"
       - "constraints/**"
       - ".python-version"
+      - ".gitattributes"
       - "README.md"
       - ".github/workflows/solver-regression.yml"
   schedule:
@@ -60,6 +62,27 @@ permissions:
   contents: read
 
 jobs:
+  fixture-byte-contract:
+    if: >-
+      github.event_name == 'push' ||
+      github.event_name == 'pull_request' ||
+      (github.event_name == 'workflow_dispatch' && inputs.suite == 'quick')
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-24.04
+          - windows-2022
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version-file: .python-version
+      - name: Verify portable regression fixture bytes
+        run: python -m unittest tests.test_regression_fixture_line_endings
+
   quick:
     if: >-
       github.event_name == 'push' ||