chore: remove temporary minimal fix workflow

.github/workflows/temp-minimal-regression-fixes.yml

@@ -1,55 +0,0 @@
-name: Temporary minimal regression fixes
-
-on:
-  pull_request:
-    branches: [main]
-    paths:
-      - tools/apply_minimal_regression_fixes.py
-      - .github/workflows/temp-minimal-regression-fixes.yml
-  workflow_dispatch:
-
-permissions:
-  contents: write
-
-jobs:
-  apply-and-test:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.head_ref || github.ref_name }}
-          fetch-depth: 0
-      - uses: actions/setup-python@v5
-        with:
-          python-version: '3.9'
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          python -m pip install -r requirements.txt
-      - name: Apply minimal fixes and test on Python 3.9
-        run: |
-          python -m py_compile tools/apply_minimal_regression_fixes.py
-          python tools/apply_minimal_regression_fixes.py
-          python -m compileall -q .
-          python -m unittest discover -s tests -p 'test_*.py'
-      - uses: actions/setup-python@v5
-        with:
-          python-version: '3.12'
-      - name: Install dependencies on Python 3.12
-        run: |
-          python -m pip install --upgrade pip
-          python -m pip install -r requirements.txt
-      - name: Test on Python 3.12
-        run: |
-          python -m compileall -q .
-          python -m unittest discover -s tests -p 'test_*.py'
-      - name: Commit verified changes to fix branch
-        if: github.event_name == 'pull_request'
-        run: |
-          git config user.name "github-actions[bot]"
-          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
-          git add -A
-          if ! git diff --cached --quiet; then
-            git commit -m "fix: harden postprocessing and recovery boundaries"
-            git push origin HEAD:${{ github.head_ref }}
-          fi