chore(deps): bump actions/checkout from 4.3.1 to 6.0.3

.github/workflows/ci.yml

@@ -15,19 +15,19 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name == 'pull_request'
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: actions/dependency-review-action@2031cfc080254a8a887f58cffee85186f0e49e48 # v4.9.0
 
   actionlint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: rhysd/actionlint@914e7df21a07ef503a81201c76d2b11c789d3fca # v1.7.12
 
   gemini-manifest:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: 22
@@ -37,7 +37,7 @@ jobs:
   readme-sync:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: 22
@@ -47,7 +47,7 @@ jobs:
   workspace-lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: 20
@@ -73,7 +73,7 @@ jobs:
   spec-coverage:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: 20
@@ -97,7 +97,7 @@ jobs:
   site-check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: 20
@@ -123,7 +123,7 @@ jobs:
   tool-docs-freshness:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: 20
@@ -147,7 +147,7 @@ jobs:
   mcpb-manifest-contract:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: 20
@@ -171,7 +171,7 @@ jobs:
   allure-labels:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: 20
@@ -197,7 +197,7 @@ jobs:
   allure-quality:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: 20
@@ -225,7 +225,7 @@ jobs:
       contents: read
       security-events: write
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - name: Initialize CodeQL
         uses: github/codeql-action/init@7211b7c8077ea37d8641b6271f6a365a22a5fbfa # v3
         with:
@@ -275,7 +275,7 @@ jobs:
           - node-version: 22
             coverage: false
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: ${{ matrix.node-version }}
@@ -376,7 +376,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: workspace-test
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: 20
@@ -422,7 +422,7 @@ jobs:
       group: pages
       cancel-in-progress: true
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: 20

.github/workflows/lean-build.yml

@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10  # v6.0.3
 
       # No `restore-keys` fallback: a partial match on `.lake` / `~/.elan`
       # across toolchain or manifest changes can silently restore artifacts

.github/workflows/llm-based-quality-gate.yml

@@ -149,7 +149,7 @@ jobs:
       # gate trivially "passes") or replace items with innocuous questions
       # that bypass the real checks.
       - name: Checkout gate source (trusted base ref)
-        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           ref: ${{ steps.pr.outputs.base_ref }}
           persist-credentials: false
@@ -207,14 +207,14 @@ jobs:
       # content. Using base_ref ensures the gate source is always the version
       # the PR is being merged into.
       - name: Checkout gate source (trusted base ref)
-        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           ref: ${{ needs.parse-checklist.outputs.base_ref }}
           persist-credentials: false
           fetch-depth: 0
 
       - name: Checkout PR head
-        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           ref: ${{ needs.parse-checklist.outputs.head_sha }}
           path: review

.github/workflows/mcpb-smoke.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 5
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: 20

.github/workflows/release-tests-corpus.yml

@@ -13,7 +13,7 @@ jobs:
     name: Release tests corpus
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:

.github/workflows/release.yml

@@ -27,7 +27,7 @@ jobs:
       group: npm-release-${{ github.event_name == 'workflow_dispatch' && inputs.release_tag || github.ref_name }}
       cancel-in-progress: false
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           fetch-depth: 0
           ref: ${{ github.event_name == 'workflow_dispatch' && inputs.release_tag || github.ref }}
@@ -209,7 +209,7 @@ jobs:
       group: npm-release-${{ github.event_name == 'workflow_dispatch' && inputs.release_tag || github.ref_name }}
       cancel-in-progress: false
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           fetch-depth: 0
           ref: ${{ github.event_name == 'workflow_dispatch' && inputs.release_tag || github.ref }}
@@ -274,7 +274,7 @@ jobs:
     env:
       RELEASE_TAG: ${{ github.event_name == 'workflow_dispatch' && inputs.release_tag || github.ref_name }}
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           ref: ${{ github.event_name == 'workflow_dispatch' && inputs.release_tag || github.ref }}
 
@@ -339,7 +339,7 @@ jobs:
     env:
       RELEASE_TAG: ${{ github.event_name == 'workflow_dispatch' && inputs.release_tag || github.ref_name }}
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           fetch-depth: 0
           ref: ${{ github.event_name == 'workflow_dispatch' && inputs.release_tag || github.ref }}
@@ -362,7 +362,7 @@ jobs:
       group: npm-release-${{ github.event_name == 'workflow_dispatch' && inputs.release_tag || github.ref_name }}
       cancel-in-progress: false
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           fetch-depth: 0
           ref: ${{ github.event_name == 'workflow_dispatch' && inputs.release_tag || github.ref }}
@@ -428,7 +428,7 @@ jobs:
           app-id: ${{ secrets.RELEASE_BOT_APP_ID }}
           private-key: ${{ secrets.RELEASE_BOT_PRIVATE_KEY }}
 
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           ref: main
           fetch-depth: 0

.github/workflows/semgrep.yml

@@ -19,7 +19,7 @@ jobs:
     container:
       image: semgrep/semgrep
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
       - name: Run scoped Semgrep scan
         run: |