diff --git a/.github/workflows/actions.lock b/.github/workflows/actions.lock
new file mode 100644
index 0000000..565189b
--- /dev/null
+++ b/.github/workflows/actions.lock
@@ -0,0 +1,59 @@
+# 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/mirror.yml':
+        - 'actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1'
+        - 'webfactory/ssh-agent@e83874834305fe9a4a2997156cb26c5de65a8555'
+    '.github/workflows/publish-container.yml':
+        - 'actions/attest-build-provenance@4d101475d8b20a2381f78447822ac1eab6504dd8'
+        - 'actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1'
+        - 'docker/build-push-action@c3c9e263c25d99ce0380d002d59b67737d91b0dc'
+        - 'docker/login-action@dbcb813823bdd20940b903addbd779551569679f'
+        - 'docker/metadata-action@dc802804100637a589fabce1cb79ff13a1411302'
+    '.github/workflows/push-email-notify.yml':
+        - 'hyperpolymath/smtp-notify-action@22e7bdb322c430c1d0dac6b3bb307f4bb139d0be'
+dependencies:
+    'actions/attest-build-provenance@4d101475d8b20a2381f78447822ac1eab6504dd8':
+        ref: 'v4.2.2'
+        commit: 'sha1-4d101475d8b20a2381f78447822ac1eab6504dd8'
+        owner_id: 44036562
+        repo_id: 760702757
+        uses:
+            - 'actions/attest@508db95dd578ae2727ebd6217d5ba78e4fbda05d'
+    'actions/attest@508db95dd578ae2727ebd6217d5ba78e4fbda05d':
+        ref: 'v4.2.1'
+        commit: 'sha1-508db95dd578ae2727ebd6217d5ba78e4fbda05d'
+        owner_id: 44036562
+        repo_id: 760701061
+    'actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1':
+        ref: 'v7.0.1'
+        commit: 'sha1-3d3c42e5aac5ba805825da76410c181273ba90b1'
+        owner_id: 44036562
+        repo_id: 197814629
+    'docker/build-push-action@c3c9e263c25d99ce0380d002d59b67737d91b0dc':
+        ref: 'v7.4.0'
+        commit: 'sha1-c3c9e263c25d99ce0380d002d59b67737d91b0dc'
+        owner_id: 5429470
+        repo_id: 241092383
+    'docker/login-action@dbcb813823bdd20940b903addbd779551569679f':
+        ref: 'v4.6.0'
+        commit: 'sha1-dbcb813823bdd20940b903addbd779551569679f'
+        owner_id: 5429470
+        repo_id: 287743349
+    'docker/metadata-action@dc802804100637a589fabce1cb79ff13a1411302':
+        ref: 'v6.2.0'
+        commit: 'sha1-dc802804100637a589fabce1cb79ff13a1411302'
+        owner_id: 5429470
+        repo_id: 306769011
+    'hyperpolymath/smtp-notify-action@22e7bdb322c430c1d0dac6b3bb307f4bb139d0be':
+        ref: 'v0.3.0'
+        commit: 'sha1-22e7bdb322c430c1d0dac6b3bb307f4bb139d0be'
+        owner_id: 6759885
+        repo_id: 1352485172
+    'webfactory/ssh-agent@e83874834305fe9a4a2997156cb26c5de65a8555':
+        ref: 'v0.10.0'
+        commit: 'sha1-e83874834305fe9a4a2997156cb26c5de65a8555'
+        owner_id: 135788
+        repo_id: 208510314
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 0413908..3b68021 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.
 # CodeQL disabled - no scannable source code detected
 name: CodeQL Security Analysis
 on:
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/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 0d3e499..af72f58 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.
 # SPDX-FileCopyrightText: 2025 Jonathan D.A. Jewell
 name: Mirror to Git Forges
 on:
diff --git a/.github/workflows/publish-container.yml b/.github/workflows/publish-container.yml
index deca75c..bfa4970 100644
--- a/.github/workflows/publish-container.yml
+++ b/.github/workflows/publish-container.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 name: Publish Container
 on:
   release:
diff --git a/.github/workflows/push-email-notify.yml b/.github/workflows/push-email-notify.yml
index dfc3138..dc68307 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 dc31a96..0d93c85 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 dcf17c7..2bbec90 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.
 # Calls the estate's shared secret scanner (gitleaks + rust-secrets +
 # shell-secrets). Replaces an inline trufflehog job: trufflehog was retired
 # estate-wide as redundant, and this repo had no other leak scanning, so the