From 364b29650b6fde2689de252cfab1c3b146f97aa4 Mon Sep 17 00:00:00 2001
From: ChrisRackauckas-Claude <accounts@chrisrackauckas.com>
Date: Thu, 4 Jun 2026 09:42:54 -0400
Subject: [PATCH] Migrate downgrade CI to the centralized inherit form

Replaces the inline-steps Downgrade workflow with the shared
SciML/.github reusable downgrade workflow (secrets: inherit). The reusable
workflow defaults allow-reresolve: false (genuine test-at-floor). Preserves the
julia-version/group matrix and skip list.

Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 .github/workflows/Downgrade.yml | 22 +++++++---------------
 1 file changed, 7 insertions(+), 15 deletions(-)

diff --git a/.github/workflows/Downgrade.yml b/.github/workflows/Downgrade.yml
index 263ad6c..743ef8f 100644
--- a/.github/workflows/Downgrade.yml
+++ b/.github/workflows/Downgrade.yml
@@ -11,21 +11,13 @@ on:
     paths-ignore:
       - 'docs/**'
 jobs:
-  test:
-    runs-on: ubuntu-latest
+  downgrade:
+    name: "Downgrade"
     strategy:
       matrix:
-        downgrade_mode: ['alldeps']
         julia-version: ['1.10']
-    steps:
-      - uses: actions/checkout@v6
-      - uses: julia-actions/setup-julia@v3
-        with:
-          version: ${{ matrix.julia-version }}
-      - uses: julia-actions/julia-downgrade-compat@v2
-        with:
-          skip: Pkg,TOML
-      - uses: julia-actions/julia-buildpkg@v1
-      - uses: julia-actions/julia-runtest@v1
-        with:
-          ALLOW_RERESOLVE: false
\ No newline at end of file
+    uses: "SciML/.github/.github/workflows/downgrade.yml@v1"
+    with:
+      julia-version: "${{ matrix.julia-version }}"
+      skip: "Pkg,TOML"
+    secrets: "inherit"