From f06dcadfea6166ec46d95de1e865c14e438fd598 Mon Sep 17 00:00:00 2001
From: ChrisRackauckas-Claude <accounts@chrisrackauckas.com>
Date: Wed, 3 Jun 2026 12:32:51 -0400
Subject: [PATCH] Centralize CI on SciML reusable workflows

Convert Runic (inline fredrikekre/runic-action) to the centralized
runic.yml@v1 caller, and add centralized SpellCheck and Downgrade callers.
Tests and Documentation were already central callers; added
secrets: "inherit" is present on all callers.

Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 .github/workflows/Downgrade.yml   | 32 +++++++++++++++++++++++++++++++
 .github/workflows/FormatCheck.yml | 12 +++---------
 .github/workflows/SpellCheck.yml  |  9 +++++++++
 3 files changed, 44 insertions(+), 9 deletions(-)
 create mode 100644 .github/workflows/Downgrade.yml
 create mode 100644 .github/workflows/SpellCheck.yml

diff --git a/.github/workflows/Downgrade.yml b/.github/workflows/Downgrade.yml
new file mode 100644
index 0000000..abe859a
--- /dev/null
+++ b/.github/workflows/Downgrade.yml
@@ -0,0 +1,32 @@
+name: "Downgrade"
+
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - 'docs/**'
+  pull_request:
+    branches:
+      - main
+    paths-ignore:
+      - 'docs/**'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.ref_name != github.event.repository.default_branch || github.ref != 'refs/tags/v*' }}
+
+jobs:
+  downgrade:
+    name: "Downgrade"
+    strategy:
+      fail-fast: false
+      matrix:
+        group:
+          - Core
+    uses: "SciML/.github/.github/workflows/downgrade.yml@v1"
+    with:
+      group: ${{ matrix.group }}
+      julia-version: "lts"
+      skip: "Pkg,TOML"
+    secrets: "inherit"
diff --git a/.github/workflows/FormatCheck.yml b/.github/workflows/FormatCheck.yml
index 6253546..32f2e1f 100644
--- a/.github/workflows/FormatCheck.yml
+++ b/.github/workflows/FormatCheck.yml
@@ -11,12 +11,6 @@ on:
 
 jobs:
   runic:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v6
-      - uses: julia-actions/setup-julia@v2
-        with:
-          version: '1'
-      - uses: fredrikekre/runic-action@v1
-        with:
-          version: '1'
+    name: "Runic"
+    uses: "SciML/.github/.github/workflows/runic.yml@v1"
+    secrets: "inherit"
diff --git a/.github/workflows/SpellCheck.yml b/.github/workflows/SpellCheck.yml
new file mode 100644
index 0000000..e408b94
--- /dev/null
+++ b/.github/workflows/SpellCheck.yml
@@ -0,0 +1,9 @@
+name: "Spell Check"
+
+on: [pull_request]
+
+jobs:
+  typos-check:
+    name: "Spell Check with Typos"
+    uses: "SciML/.github/.github/workflows/spellcheck.yml@v1"
+    secrets: "inherit"