diff --git a/.github/workflows/boj-build.yml b/.github/workflows/boj-build.yml
index 6c15cdb..5bb9e75 100644
--- a/.github/workflows/boj-build.yml
+++ b/.github/workflows/boj-build.yml
@@ -16,4 +16,5 @@ jobs:
           curl -X POST "http://boj-server.local:7700/cartridges/ssg-mcp/invoke"             -H "Content-Type: application/json"             -d "{\"repo\": \"${{ github.repository }}\", \"branch\": \"${{ github.ref_name }}\", \"engine\": \"casket\\"}"}
         continue-on-error: true
 permissions:
+  actions: read
   contents: read
diff --git a/.github/workflows/casket-pages.yml b/.github/workflows/casket-pages.yml
index 751e879..aef7e09 100644
--- a/.github/workflows/casket-pages.yml
+++ b/.github/workflows/casket-pages.yml
@@ -7,6 +7,7 @@ on:
   workflow_dispatch:
 
 permissions:
+  actions: read
   contents: read
   pages: write
   id-token: write
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 87e48e5..1e91f83 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -18,6 +18,7 @@ concurrency:
   cancel-in-progress: true
 
 permissions:
+  actions: read
   contents: read
 
 jobs:
diff --git a/.github/workflows/dependabot-automerge.yml b/.github/workflows/dependabot-automerge.yml
index ca86baa..ef640a5 100644
--- a/.github/workflows/dependabot-automerge.yml
+++ b/.github/workflows/dependabot-automerge.yml
@@ -41,6 +41,7 @@ on:
     types: [opened, reopened, synchronize]
 
 permissions:
+  actions: read
   contents: write        # needed to enable auto-merge
   pull-requests: write   # needed to approve
   # NB: keep narrow — do NOT add secrets: read or id-token: write here.
diff --git a/.github/workflows/dogfood-gate.yml b/.github/workflows/dogfood-gate.yml
index a9c9760..0d1e425 100644
--- a/.github/workflows/dogfood-gate.yml
+++ b/.github/workflows/dogfood-gate.yml
@@ -13,6 +13,7 @@ on:
     branches: [main, master]
 
 permissions:
+  actions: read
   contents: read
 
 jobs:
diff --git a/.github/workflows/governance.yml b/.github/workflows/governance.yml
index 8776de0..966a16e 100644
--- a/.github/workflows/governance.yml
+++ b/.github/workflows/governance.yml
@@ -9,6 +9,7 @@ on:
   workflow_dispatch:
 
 permissions:
+  actions: read
   contents: read
 
 jobs:
diff --git a/.github/workflows/hypatia-scan.yml b/.github/workflows/hypatia-scan.yml
index 9dde27a..556e8e0 100644
--- a/.github/workflows/hypatia-scan.yml
+++ b/.github/workflows/hypatia-scan.yml
@@ -11,6 +11,7 @@ on:
   workflow_dispatch:
 
 permissions:
+  actions: read
   contents: read
   security-events: write
 
diff --git a/.github/workflows/instant-sync.yml b/.github/workflows/instant-sync.yml
index 4dab25d..6eb80e0 100644
--- a/.github/workflows/instant-sync.yml
+++ b/.github/workflows/instant-sync.yml
@@ -9,6 +9,7 @@ on:
     types: [published]
 
 permissions:
+  actions: read
   contents: read
 
 jobs:
diff --git a/.github/workflows/mirror.yml b/.github/workflows/mirror.yml
index 81e9903..72824fb 100644
--- a/.github/workflows/mirror.yml
+++ b/.github/workflows/mirror.yml
@@ -7,9 +7,10 @@ on:
   workflow_dispatch:
 
 permissions:
+  actions: read
   contents: read
 
 jobs:
   mirror:
-    uses: hyperpolymath/standards/.github/workflows/mirror-reusable.yml@d135b05bfc647d0c0fbfedc7e80f37ea50f49236
+    uses: hyperpolymath/standards/.github/workflows/mirror-reusable.yml@7fdc2705df74b4e352d2a1cde3e87a5923fdf329
     secrets: inherit
diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index c78489a..0273437 100755
--- a/.github/workflows/pages.yml
+++ b/.github/workflows/pages.yml
@@ -5,6 +5,7 @@ on:
     branches: [main, master]
   workflow_dispatch:
 permissions:
+  actions: read
   contents: read
   pages: write
   id-token: write
diff --git a/.github/workflows/push-email-notify.yml b/.github/workflows/push-email-notify.yml
index 0816771..ce036e2 100644
--- a/.github/workflows/push-email-notify.yml
+++ b/.github/workflows/push-email-notify.yml
@@ -7,6 +7,7 @@ name: Push email notification
 on:
   push: {}
 permissions:
+  actions: read
   contents: read
 jobs:
   notify:
diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
index b97e2cb..cede40a 100644
--- a/.github/workflows/scorecard.yml
+++ b/.github/workflows/scorecard.yml
@@ -9,6 +9,7 @@ on:
   workflow_dispatch:
 
 permissions:
+  actions: read
   contents: read
 
 jobs:
diff --git a/.github/workflows/secret-scanner.yml b/.github/workflows/secret-scanner.yml
index b3486fc..4839d60 100644
--- a/.github/workflows/secret-scanner.yml
+++ b/.github/workflows/secret-scanner.yml
@@ -11,6 +11,7 @@ concurrency:
   cancel-in-progress: true
 
 permissions:
+  actions: read
   contents: read
 
 jobs:
diff --git a/.github/workflows/workflow-linter.yml b/.github/workflows/workflow-linter.yml
index 636a055..77f8756 100644
--- a/.github/workflows/workflow-linter.yml
+++ b/.github/workflows/workflow-linter.yml
@@ -11,6 +11,7 @@ on:
       - '.github/workflows/**'
 
 permissions: read-all
+  actions: read
 
 jobs:
   lint-workflows:
diff --git a/guix.scm b/guix.scm
deleted file mode 100644
index c29882a..0000000
--- a/guix.scm
+++ /dev/null
@@ -1,18 +0,0 @@
-; SPDX-License-Identifier: MPL-2.0
-;; guix.scm — GNU Guix package definition for snapcreate
-;; Usage: guix shell -f guix.scm
-
-(use-modules (guix packages)
-             (guix build-system gnu)
-             (guix licenses))
-
-(package
-  (name "snapcreate")
-  (version "0.1.0")
-  (source #f)
-  (build-system gnu-build-system)
-  (synopsis "snapcreate")
-  (description "snapcreate — part of the hyperpolymath ecosystem.")
-  (home-page "https://github.com/hyperpolymath/snapcreate")
-  (license ((@@ (guix licenses) license) "PMPL-1.0-or-later"
-             "https://github.com/hyperpolymath/palimpsest-license")))