diff --git a/.github/workflows/codeowners-folder-validation.yml b/.github/workflows/codeowners-folder-validation.yml
index 26c4fb7..447d987 100644
--- a/.github/workflows/codeowners-folder-validation.yml
+++ b/.github/workflows/codeowners-folder-validation.yml
@@ -21,7 +21,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/evaluation.yml b/.github/workflows/evaluation.yml
index e0f5ab4..e80c55b 100644
--- a/.github/workflows/evaluation.yml
+++ b/.github/workflows/evaluation.yml
@@ -75,7 +75,7 @@ jobs:
       statuses: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           fetch-depth: 0
           persist-credentials: false
@@ -137,7 +137,7 @@ jobs:
       statuses: write
     steps:
       - name: Checkout base branch
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           ref: ${{ github.event.pull_request.base.sha }}
           fetch-depth: 0
@@ -327,7 +327,7 @@ jobs:
 
       - name: Checkout repository
         if: github.event_name != 'schedule' || steps.check-changes.outputs.has_changes == 'true'
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           fetch-depth: 0
           persist-credentials: false
@@ -471,7 +471,7 @@ jobs:
       # changes are tested. For fork PRs (untrusted), always build from the
       # base branch to prevent untrusted code from modifying tooling.
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           ref: ${{ needs.gate.outputs.is_fork != 'true' && needs.gate.outputs.head_sha || '' }}
           persist-credentials: false
@@ -489,7 +489,7 @@ jobs:
 
       - name: Setup .NET SDK
         if: steps.cache-validator.outputs.cache-hit != 'true'
-        uses: actions/setup-dotnet@c2fa09f4bde5ebb9d1777cf28262a3eb3db3ced7 # v5
+        uses: actions/setup-dotnet@9a946fdbd5fb07b82b2f5a4466058b876ab72bb2 # v5
         with:
           global-json-file: global.json
 
@@ -529,13 +529,13 @@ jobs:
 
     steps:
       - name: Checkout skills content
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           ref: ${{ needs.gate.outputs.head_sha || '' }}
           persist-credentials: false
 
       - name: Setup .NET SDK
-        uses: actions/setup-dotnet@c2fa09f4bde5ebb9d1777cf28262a3eb3db3ced7 # v5
+        uses: actions/setup-dotnet@9a946fdbd5fb07b82b2f5a4466058b876ab72bb2 # v5
         with:
           global-json-file: global.json
 
@@ -854,7 +854,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
 
@@ -986,7 +986,7 @@ jobs:
       cancel-in-progress: false
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
 
@@ -1077,7 +1077,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
 
@@ -1204,11 +1204,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository (for dashboard UI files)
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
 
-      - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: 20
 
diff --git a/.github/workflows/gh-aw-upgrade.yml b/.github/workflows/gh-aw-upgrade.yml
index b3d5b5a..6a74d17 100644
--- a/.github/workflows/gh-aw-upgrade.yml
+++ b/.github/workflows/gh-aw-upgrade.yml
@@ -13,7 +13,7 @@ jobs:
   upgrade:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
 
       - name: Install gh-aw CLI
         run: curl -sL https://raw.githubusercontent.com/github/gh-aw/main/install-gh-aw.sh | bash
diff --git a/.github/workflows/markdownlint.yml b/.github/workflows/markdownlint.yml
index c3fb945..b35d55e 100644
--- a/.github/workflows/markdownlint.yml
+++ b/.github/workflows/markdownlint.yml
@@ -19,13 +19,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
           fetch-depth: 0
 
       - name: Get changed Markdown files
-        uses: tj-actions/changed-files@24d32ffd492484c1d75e0c0b894501ddb9d30d62 # v47
+        uses: tj-actions/changed-files@9426d40962ed5378910ee2e21d5f8c6fcbf2dd96 # v47.0.6
         id: changed-files
         with:
           files: "**/*.md"
@@ -33,7 +33,7 @@ jobs:
 
       - name: Run markdownlint
         if: steps.changed-files.outputs.any_changed == 'true'
-        uses: DavidAnson/markdownlint-cli2-action@ce4853d43830c74c1753b39f3cf40f71c2031eb9 # v23
+        uses: DavidAnson/markdownlint-cli2-action@ded1f9488f68a970bc66ea5619e13e9b52e601cd # v23
         with:
           globs: ${{ steps.changed-files.outputs.all_changed_files }}
           separator: ","
diff --git a/.github/workflows/skill-check.yml b/.github/workflows/skill-check.yml
index c444826..96be53d 100644
--- a/.github/workflows/skill-check.yml
+++ b/.github/workflows/skill-check.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
 
@@ -28,7 +28,7 @@ jobs:
 
       - name: Setup .NET SDK
         if: steps.cache-validator.outputs.cache-hit != 'true'
-        uses: actions/setup-dotnet@c2fa09f4bde5ebb9d1777cf28262a3eb3db3ced7 # v5
+        uses: actions/setup-dotnet@9a946fdbd5fb07b82b2f5a4466058b876ab72bb2 # v5
         with:
           global-json-file: global.json
 
diff --git a/.github/workflows/skill-coverage.yml b/.github/workflows/skill-coverage.yml
index 6c83fa3..4a40ceb 100644
--- a/.github/workflows/skill-coverage.yml
+++ b/.github/workflows/skill-coverage.yml
@@ -112,7 +112,7 @@ jobs:
       # Checkout the default branch for trusted tooling (Measure-SkillCoverage.ps1),
       # then fetch the PR head into a separate worktree so untrusted code is never executed.
       - name: Checkout base branch (trusted tooling)
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/skill-validator.yml b/.github/workflows/skill-validator.yml
index 4a63fb2..d6fc950 100644
--- a/.github/workflows/skill-validator.yml
+++ b/.github/workflows/skill-validator.yml
@@ -26,7 +26,7 @@ jobs:
     outputs:
       has_changes: ${{ steps.check.outputs.has_changes }}
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           fetch-depth: 0
 
@@ -73,10 +73,10 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: false
-      - uses: actions/setup-dotnet@c2fa09f4bde5ebb9d1777cf28262a3eb3db3ced7 # v5
+      - uses: actions/setup-dotnet@9a946fdbd5fb07b82b2f5a4466058b876ab72bb2 # v5
         with:
           global-json-file: global.json
 
@@ -148,7 +148,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
         with:
           persist-credentials: true