diff --git a/.github/workflows/actions.lock b/.github/workflows/actions.lock
new file mode 100644
index 00000000..ca439d97
--- /dev/null
+++ b/.github/workflows/actions.lock
@@ -0,0 +1,80 @@
+# This file is machine-generated by `gh actions-lock`.
+# Do not edit by hand; run `gh actions-lock` to update.
+# Docs: https://gh.io/actions-lockfile
+version: 'v0.0.2'
+workflows:
+    '.github/workflows/boj-build.yml':
+        - 'actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1'
+    '.github/workflows/casket-pages.yml':
+        - 'actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9'
+        - 'actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1'
+        - 'actions/configure-pages@45bfe0192ca1faeb007ade9deae92b16b8254a0d'
+        - 'actions/deploy-pages@cd2ce8fcbc39b97be8ca5fce6e763baed58fa128'
+        - 'actions/upload-pages-artifact@fc324d3547104276b827a68afc52ff2a11cc49c9'
+        - 'haskell-actions/setup@cd0d9bdd65b20557f41bea4dbe43d0b5fbbfe553'
+    '.github/workflows/codeql.yml':
+        - 'actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1'
+        - 'github/codeql-action@7188fc363630916deb702c7fdcf4e481b751f97a'
+    '.github/workflows/dogfood-gate.yml':
+        - 'actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1'
+    '.github/workflows/instant-sync.yml':
+        - 'peter-evans/repository-dispatch@28959ce8df70de7be546dd1250a005dd32156697'
+    '.github/workflows/pages.yml':
+        - 'actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1'
+        - 'actions/deploy-pages@cd2ce8fcbc39b97be8ca5fce6e763baed58fa128'
+        - 'actions/upload-pages-artifact@fc324d3547104276b827a68afc52ff2a11cc49c9'
+    '.github/workflows/push-email-notify.yml':
+        - 'hyperpolymath/smtp-notify-action@ede1191ef6ff3ac02c4f4d9efdf837ee517e11d7'
+dependencies:
+    'actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9':
+        ref: 'v6.1.0'
+        commit: 'sha1-55cc8345863c7cc4c66a329aec7e433d2d1c52a9'
+        owner_id: 44036562
+        repo_id: 215566462
+    'actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1':
+        ref: 'v7.0.1'
+        commit: 'sha1-3d3c42e5aac5ba805825da76410c181273ba90b1'
+        owner_id: 44036562
+        repo_id: 197814629
+    'actions/configure-pages@45bfe0192ca1faeb007ade9deae92b16b8254a0d':
+        ref: 'v6.0.0'
+        commit: 'sha1-45bfe0192ca1faeb007ade9deae92b16b8254a0d'
+        owner_id: 44036562
+        repo_id: 513659658
+    'actions/deploy-pages@cd2ce8fcbc39b97be8ca5fce6e763baed58fa128':
+        ref: 'v5.0.0'
+        commit: 'sha1-cd2ce8fcbc39b97be8ca5fce6e763baed58fa128'
+        owner_id: 44036562
+        repo_id: 438112499
+    'actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f':
+        ref: 'v7.0.0'
+        commit: 'sha1-bbbca2ddaa5d8feaa63e36b76fdaad77386f024f'
+        owner_id: 44036562
+        repo_id: 192625955
+    'actions/upload-pages-artifact@fc324d3547104276b827a68afc52ff2a11cc49c9':
+        ref: 'v5.0.0'
+        commit: 'sha1-fc324d3547104276b827a68afc52ff2a11cc49c9'
+        owner_id: 44036562
+        repo_id: 496012378
+        uses:
+            - 'actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f'
+    'github/codeql-action@7188fc363630916deb702c7fdcf4e481b751f97a':
+        ref: 'v4.37.1'
+        commit: 'sha1-7188fc363630916deb702c7fdcf4e481b751f97a'
+        owner_id: 9919
+        repo_id: 259445878
+    'haskell-actions/setup@cd0d9bdd65b20557f41bea4dbe43d0b5fbbfe553':
+        ref: 'v2.11.0'
+        commit: 'sha1-cd0d9bdd65b20557f41bea4dbe43d0b5fbbfe553'
+        owner_id: 75048950
+        repo_id: 623796603
+    'hyperpolymath/smtp-notify-action@ede1191ef6ff3ac02c4f4d9efdf837ee517e11d7':
+        ref: 'v0.2.0'
+        commit: 'sha1-ede1191ef6ff3ac02c4f4d9efdf837ee517e11d7'
+        owner_id: 6759885
+        repo_id: 1352485172
+    'peter-evans/repository-dispatch@28959ce8df70de7be546dd1250a005dd32156697':
+        ref: 'v4.0.1'
+        commit: 'sha1-28959ce8df70de7be546dd1250a005dd32156697'
+        owner_id: 18365890
+        repo_id: 220359305
diff --git a/.github/workflows/boj-build.yml b/.github/workflows/boj-build.yml
index 550717b3..33d5e7c5 100644
--- a/.github/workflows/boj-build.yml
+++ b/.github/workflows/boj-build.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 name: BoJ Server Build Trigger
 on:
   push:
diff --git a/.github/workflows/casket-pages.yml b/.github/workflows/casket-pages.yml
index b570ef65..5996e334 100644
--- a/.github/workflows/casket-pages.yml
+++ b/.github/workflows/casket-pages.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 name: GitHub Pages
 on:
   push:
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 3bf01e9e..79e3fe65 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 name: CodeQL Security Analysis
 on:
   push:
diff --git a/.github/workflows/dogfood-gate.yml b/.github/workflows/dogfood-gate.yml
index 98e3f6b5..a33f29a6 100644
--- a/.github/workflows/dogfood-gate.yml
+++ b/.github/workflows/dogfood-gate.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 # Copyright (c) 2026 Jonathan D.A. Jewell (hyperpolymath) <j.d.a.jewell@open.ac.uk>
 #
 # dogfood-gate.yml — Hyperpolymath Dogfooding Quality Gate
diff --git a/.github/workflows/governance.yml b/.github/workflows/governance.yml
index b8aa88bf..c589f752 100644
--- a/.github/workflows/governance.yml
+++ b/.github/workflows/governance.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 # governance.yml — single wrapper calling the shared estate governance bundle
 # in hyperpolymath/standards instead of carrying per-repo copies.
 #
diff --git a/.github/workflows/hypatia-scan.yml b/.github/workflows/hypatia-scan.yml
index cc876771..739da74a 100644
--- a/.github/workflows/hypatia-scan.yml
+++ b/.github/workflows/hypatia-scan.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 # Thin wrapper around hyperpolymath/standards hypatia-scan-reusable.yml.
 # See standards#191 for the reusable's purpose and design.
 
diff --git a/.github/workflows/instant-sync.yml b/.github/workflows/instant-sync.yml
index 440a33f2..2937f1e1 100644
--- a/.github/workflows/instant-sync.yml
+++ b/.github/workflows/instant-sync.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 # Instant Forge Sync - Triggers propagation to all forges on push/release
 name: Instant Sync
 on:
diff --git a/.github/workflows/label-triage.yml b/.github/workflows/label-triage.yml
index 9886e920..fc799478 100644
--- a/.github/workflows/label-triage.yml
+++ b/.github/workflows/label-triage.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 name: Label Triage
 
 # Classify newly-filed issues against the estate label taxonomy.
diff --git a/.github/workflows/labels.yml b/.github/workflows/labels.yml
index c80b676c..af34c6b2 100644
--- a/.github/workflows/labels.yml
+++ b/.github/workflows/labels.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 name: Labels
 
 # Applies the canonical estate label set from .github/labels.json.
diff --git a/.github/workflows/mirror.yml b/.github/workflows/mirror.yml
index 6bd847da..46961e07 100644
--- a/.github/workflows/mirror.yml
+++ b/.github/workflows/mirror.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 name: Mirror to Git Forges
 on:
   push:
diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index def2d514..f520d6df 100644
--- a/.github/workflows/pages.yml
+++ b/.github/workflows/pages.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 name: GitHub Pages (Ddraig SSG)
 on:
   push:
diff --git a/.github/workflows/push-email-notify.yml b/.github/workflows/push-email-notify.yml
index 0689291e..80c69427 100644
--- a/.github/workflows/push-email-notify.yml
+++ b/.github/workflows/push-email-notify.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 # Dormant push-email notification. ARMED by setting the repo variable
 # PUSH_EMAIL_ENABLED=true (the single on/off switch). Addresses are pre-filled;
 # sending needs the org SMTP secrets (SMTP_HOST/PORT/USER/PASS). Inherited by
diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
index d3582654..994d45eb 100644
--- a/.github/workflows/scorecard.yml
+++ b/.github/workflows/scorecard.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 name: Scorecards supply-chain security
 
 on:
diff --git a/.github/workflows/secret-scanner.yml b/.github/workflows/secret-scanner.yml
index d327764a..b9267d4f 100644
--- a/.github/workflows/secret-scanner.yml
+++ b/.github/workflows/secret-scanner.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 name: Secret Scanner
 on:
   pull_request: