From 7f991332c785f51a79afe96de8a0a6ee1760f299 Mon Sep 17 00:00:00 2001
From: Douglas Eichelberger <doug.eichelberger@gusto.com>
Date: Tue, 29 Sep 2026 13:21:15 -0700
Subject: [PATCH] Add zizmor and fix its findings

Adds a zizmor workflow that calls rubyatscale/shared-config's reusable
zizmor.yml, and fixes what zizmor 1.30.1 reports here so it starts
clean.

Actions are pinned to commit SHAs with the exact version in a trailing
comment: checkout at v7.0.1, as shared-config pins it, and the rest at
the release their floating tag runs today. Checkouts set
persist-credentials: false. The @main calls into shared-config get the
same documented zizmor ignores the other rubyatscale repos use.
Dependabot entries get a 7-day cooldown, and a github-actions entry
keeps the new pins current.

The gem release no longer restores the bundler cache, which other
workflows can write; it runs bundle install instead.
---
 .github/dependabot.yml         | 12 ++++++++++++
 .github/workflows/ci.yml       |  8 ++++++--
 .github/workflows/push_gem.yml | 12 ++++++++----
 .github/workflows/zizmor.yml   | 16 ++++++++++++++++
 4 files changed, 42 insertions(+), 6 deletions(-)
 create mode 100644 .github/workflows/zizmor.yml

diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 09f4568..3239b02 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -8,3 +8,15 @@ updates:
       bundler:
         patterns:
           - "*"
+    cooldown:
+      default-days: 7
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+    groups:
+      github-actions:
+        patterns:
+          - "*"
+    cooldown:
+      default-days: 7
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index dfeadec..b16a36d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,8 +23,10 @@ jobs:
     name: "Tests: Ruby ${{ matrix.ruby }}"
     steps:
       - uses: actions/checkout@5126516654c75f76bca1de45dd82a3006d8890f9
+        with:
+          persist-credentials: false
       - name: Set up Ruby ${{ matrix.ruby }}
-        uses: ruby/setup-ruby@v1
+        uses: ruby/setup-ruby@14594264cd68ce8a2345dd349bc3d138a4ef85c8 # v1.327.0
         with:
           bundler-cache: true
           ruby-version: ${{ matrix.ruby }}
@@ -35,8 +37,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@5126516654c75f76bca1de45dd82a3006d8890f9
+        with:
+          persist-credentials: false
       - name: Rubyfmt
-        uses: rubyatscale/rubyfmt-action@v1
+        uses: rubyatscale/rubyfmt-action@cf0cfc65bb8cab4c628ffea8662892598a48d6d3 # v1.0.0
         with:
           paths: |
             lib/
diff --git a/.github/workflows/push_gem.yml b/.github/workflows/push_gem.yml
index 8f921f6..06864c5 100644
--- a/.github/workflows/push_gem.yml
+++ b/.github/workflows/push_gem.yml
@@ -17,12 +17,16 @@ jobs:
 
     steps:
       # Set up
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
       - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
+        uses: ruby/setup-ruby@14594264cd68ce8a2345dd349bc3d138a4ef85c8 # v1.327.0
         with:
-          bundler-cache: true
           ruby-version: ruby
+      # Not bundler-cache: a tag-triggered release shouldn't restore a cache other workflows can write.
+      - name: Install gems
+        run: bundle install
 
       # Release
-      - uses: rubygems/release-gem@v1
+      - uses: rubygems/release-gem@7f9650160c1a4e7989fdc9855807bdbd421d8b6b # v1.4.1
diff --git a/.github/workflows/zizmor.yml b/.github/workflows/zizmor.yml
new file mode 100644
index 0000000..e5a0721
--- /dev/null
+++ b/.github/workflows/zizmor.yml
@@ -0,0 +1,16 @@
+name: GitHub Actions Security Analysis
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: ["**"]
+
+permissions: {}
+
+jobs:
+  zizmor:
+    permissions:
+      contents: read
+      security-events: write
+    uses: rubyatscale/shared-config/.github/workflows/zizmor.yml@main # zizmor: ignore[unpinned-uses] internal reusable workflow tracked at @main by convention so shared-config updates propagate automatically