diff --git a/.github/workflows/actions.lock b/.github/workflows/actions.lock
new file mode 100644
index 0000000..8df7032
--- /dev/null
+++ b/.github/workflows/actions.lock
@@ -0,0 +1,89 @@
+# 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@368f82528645a54fb793d4d04e342629a3f51346'
+        - 'actions/upload-pages-artifact@fc324d3547104276b827a68afc52ff2a11cc49c9'
+        - 'haskell-actions/setup@0f8e8c99d88aeb3fbfd523f1ef2c6f762d10d64d'
+    '.github/workflows/codeql.yml':
+        - 'actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1'
+        - 'github/codeql-action@1c5b675653bb5c22dbe9b12b556ec555138e09fd'
+    '.github/workflows/dependabot-automerge.yml':
+        - 'dependabot/fetch-metadata@25dd0e34f4fe68f24cc83900b1fe3fe149efef98'
+    '.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@368f82528645a54fb793d4d04e342629a3f51346'
+        - 'actions/upload-pages-artifact@fc324d3547104276b827a68afc52ff2a11cc49c9'
+    '.github/workflows/push-email-notify.yml':
+        - 'hyperpolymath/smtp-notify-action@22e7bdb322c430c1d0dac6b3bb307f4bb139d0be'
+    '.github/workflows/workflow-linter.yml':
+        - 'actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1'
+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@368f82528645a54fb793d4d04e342629a3f51346':
+        ref: 'v5.0.1'
+        commit: 'sha1-368f82528645a54fb793d4d04e342629a3f51346'
+        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'
+    'dependabot/fetch-metadata@25dd0e34f4fe68f24cc83900b1fe3fe149efef98':
+        ref: 'v3.1.0'
+        commit: 'sha1-25dd0e34f4fe68f24cc83900b1fe3fe149efef98'
+        owner_id: 27347476
+        repo_id: 371068214
+    'github/codeql-action@1c5b675653bb5c22dbe9b12b556ec555138e09fd':
+        ref: 'v4.38.1'
+        commit: 'sha1-1c5b675653bb5c22dbe9b12b556ec555138e09fd'
+        owner_id: 9919
+        repo_id: 259445878
+    'haskell-actions/setup@0f8e8c99d88aeb3fbfd523f1ef2c6f762d10d64d':
+        ref: 'v2.12.1'
+        commit: 'sha1-0f8e8c99d88aeb3fbfd523f1ef2c6f762d10d64d'
+        owner_id: 75048950
+        repo_id: 623796603
+    'hyperpolymath/smtp-notify-action@22e7bdb322c430c1d0dac6b3bb307f4bb139d0be':
+        ref: 'v0.3.0'
+        commit: 'sha1-22e7bdb322c430c1d0dac6b3bb307f4bb139d0be'
+        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 4fe6b9a..8762dc7 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 70aded8..1c6d3b6 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:
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 6746b6a..9bc68ac 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:
diff --git a/.github/workflows/dependabot-automerge.yml b/.github/workflows/dependabot-automerge.yml
index 702479e..685ab4e 100644
--- a/.github/workflows/dependabot-automerge.yml
+++ b/.github/workflows/dependabot-automerge.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 #
 # dependabot-automerge.yml — enable GitHub's native auto-merge on
 # Dependabot pull requests that match a declared severity / ecosystem
diff --git a/.github/workflows/dogfood-gate.yml b/.github/workflows/dogfood-gate.yml
index ea2aa3a..5b92f1c 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 5922883..4a706cc 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 d8e00ae..97e8676 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 61aa9f6..9e790a7 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
 
diff --git a/.github/workflows/label-triage.yml b/.github/workflows/label-triage.yml
index 9886e92..fc79947 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 c80b676..af34c6b 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 cde47d6..ca54d84 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:
diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index 7773c8f..11d401c 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 7946625..341ba65 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 7701356..0a70558 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 c7fc77c..d28c629 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:
diff --git a/.github/workflows/workflow-linter.yml b/.github/workflows/workflow-linter.yml
index 67b6a82..31ebb86 100644
--- a/.github/workflows/workflow-linter.yml
+++ b/.github/workflows/workflow-linter.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 # Prevention workflow - validates all workflows have proper security config
 name: Workflow Security Linter