diff --git a/.github/workflows/actions.lock b/.github/workflows/actions.lock
new file mode 100644
index 0000000..46bff9a
--- /dev/null
+++ b/.github/workflows/actions.lock
@@ -0,0 +1,95 @@
+# 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@de0fac2e4500dabe0009e67214ff5f5447ce83dd'
+    '.github/workflows/casket-pages.yml':
+        - 'actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830'
+        - 'actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11'
+        - 'actions/configure-pages@983d7736d9b0ae728b81ab479565c72886d7745b'
+        - 'actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e'
+        - 'actions/upload-pages-artifact@56afc609e74202658d3ffba0e8f6dda462b719fa'
+        - 'haskell-actions/setup@ec49483bfc012387b227434aba94f59a6ecd0900'
+    '.github/workflows/codeql.yml':
+        - 'actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd'
+        - 'github/codeql-action@c6f931105cb2c34c8f901cc885ba1e2e259cf745'
+    '.github/workflows/dogfood-gate.yml':
+        - 'actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5'
+    '.github/workflows/instant-sync.yml':
+        - 'peter-evans/repository-dispatch@28959ce8df70de7be546dd1250a005dd32156697'
+    '.github/workflows/pages.yml':
+        - 'actions/checkout@11d5960a326750d5838078e36cf38b85af677262'
+        - 'actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e'
+        - 'actions/upload-pages-artifact@56afc609e74202658d3ffba0e8f6dda462b719fa'
+    '.github/workflows/push-email-notify.yml':
+        - 'hyperpolymath/smtp-notify-action@ede1191ef6ff3ac02c4f4d9efdf837ee517e11d7'
+dependencies:
+    'actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830':
+        ref: 'v4.3.0'
+        commit: 'sha1-0057852bfaa89a56745cba8c7296529d2fc39830'
+        owner_id: 44036562
+        repo_id: 215566462
+    'actions/checkout@11d5960a326750d5838078e36cf38b85af677262':
+        ref: 'v4.4.0'
+        commit: 'sha1-11d5960a326750d5838078e36cf38b85af677262'
+        owner_id: 44036562
+        repo_id: 197814629
+    'actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5':
+        ref: 'v4.3.1'
+        commit: 'sha1-34e114876b0b11c390a56381ad16ebd13914f8d5'
+        owner_id: 44036562
+        repo_id: 197814629
+    'actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11':
+        ref: 'v4.1.1'
+        commit: 'sha1-b4ffde65f46336ab88eb53be808477a3936bae11'
+        owner_id: 44036562
+        repo_id: 197814629
+    'actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd':
+        ref: 'v6.0.2'
+        commit: 'sha1-de0fac2e4500dabe0009e67214ff5f5447ce83dd'
+        owner_id: 44036562
+        repo_id: 197814629
+    'actions/configure-pages@983d7736d9b0ae728b81ab479565c72886d7745b':
+        ref: 'v5.0.0'
+        commit: 'sha1-983d7736d9b0ae728b81ab479565c72886d7745b'
+        owner_id: 44036562
+        repo_id: 513659658
+    'actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e':
+        ref: 'v4.0.5'
+        commit: 'sha1-d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e'
+        owner_id: 44036562
+        repo_id: 438112499
+    'actions/upload-artifact@v4':
+        ref: 'v4'
+        commit: 'sha1-ea165f8d65b6e75b540449e92b4886f43607fa02'
+        owner_id: 44036562
+        repo_id: 192625955
+    'actions/upload-pages-artifact@56afc609e74202658d3ffba0e8f6dda462b719fa':
+        ref: 'v3.0.1'
+        commit: 'sha1-56afc609e74202658d3ffba0e8f6dda462b719fa'
+        owner_id: 44036562
+        repo_id: 496012378
+        uses:
+            - 'actions/upload-artifact@v4'
+    'github/codeql-action@c6f931105cb2c34c8f901cc885ba1e2e259cf745':
+        ref: 'v4.34.0'
+        commit: 'sha1-c6f931105cb2c34c8f901cc885ba1e2e259cf745'
+        owner_id: 9919
+        repo_id: 259445878
+    'haskell-actions/setup@ec49483bfc012387b227434aba94f59a6ecd0900':
+        ref: 'v2.7.5'
+        commit: 'sha1-ec49483bfc012387b227434aba94f59a6ecd0900'
+        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 a1526a9..f6a6c62 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 b625074..e2463d1 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 82becaf..73c9c83 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/dogfood-gate.yml b/.github/workflows/dogfood-gate.yml
index 91c141f..5dee04c 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 80ad396..bf5aae0 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.
 name: Governance
 
 on:
diff --git a/.github/workflows/hypatia-scan.yml b/.github/workflows/hypatia-scan.yml
index f31f35d..db83654 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.
 name: Hypatia Security Scan
 
 on:
diff --git a/.github/workflows/instant-sync.yml b/.github/workflows/instant-sync.yml
index 0f86f6c..a1909e2 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
old mode 100755
new mode 100644
index 0273437..fb2b502
--- 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 0689291..80c6942 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/rust-ci.yml b/.github/workflows/rust-ci.yml
index b765dde..d6b8a2f 100644
--- a/.github/workflows/rust-ci.yml
+++ b/.github/workflows/rust-ci.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 # Rust CI — thin wrapper calling the shared estate reusable in
 # hyperpolymath/standards. Configure once, propagate everywhere.
 # See: docs/CI-REUSABLE-WORKFLOWS.adoc in standards.
diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
index 0d547a5..6c99d3f 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: OSSF Scorecard
 
 on:
diff --git a/.github/workflows/secret-scanner.yml b/.github/workflows/secret-scanner.yml
index 23f0444..78723a5 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: