[StepSecurity] Apply security best practices

.github/workflows/integrity-check.yml

@@ -22,19 +22,24 @@ jobs:
     name: Tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v7
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - name: Install package manager (from package.json)
         run: |
           corepack enable
           corepack install
-      - uses: actions/setup-node@v6
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: '24'
       - name: Resolve yarn cache folder
         id: yarn-config
         run: echo "cacheFolder=$(yarn config get cacheFolder)" >> "$GITHUB_OUTPUT"
       - name: Restore yarn install cache (node_modules + cacheFolder + install-state)
-        uses: actions/cache@v4
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
           path: |
             ${{ steps.yarn-config.outputs.cacheFolder }}

.github/workflows/validate-community-plugins.yml

@@ -23,11 +23,16 @@ jobs:
       matrix: ${{ steps.parse.outputs.matrix }}
       plugin_count: ${{ steps.parse.outputs.count }}
     steps:
-      - uses: actions/checkout@v4
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
       - name: Parse plugin registry
         id: parse
-        uses: actions/github-script@v7
+        uses: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b # v7.1.0
         with:
           script: |
             const fs = require('fs');
@@ -73,7 +78,12 @@ jobs:
       fail-fast: false
       matrix: ${{ fromJson(needs.load-plugins.outputs.matrix) }}
     steps:
-      - uses: actions/checkout@v4
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
       - name: Create test project
         run: |
@@ -142,10 +152,15 @@ jobs:
     if: always()
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
       - name: Generate summary
-        uses: actions/github-script@v7
+        uses: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b # v7.1.0
         with:
           script: |
             const { data: run } = await github.rest.actions.listJobsForWorkflowRun({

.github/workflows/validate-orchestrator.yml

@@ -56,11 +56,16 @@ jobs:
     name: Plugin Architecture Health
     runs-on: ubuntu-latest
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+        with:
+          egress-policy: audit
+
       - name: Checkout unity-builder
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
       - name: Checkout orchestrator
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
         with:
           repository: game-ci/orchestrator
           ref: ${{ github.head_ref || github.ref_name }}
@@ -70,7 +75,7 @@ jobs:
 
       - name: Fallback to orchestrator main branch
         if: steps.orchestrator-branch.outcome == 'failure'
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
         with:
           repository: game-ci/orchestrator
           path: orchestrator-standalone
@@ -79,14 +84,14 @@ jobs:
         run: |
           corepack enable
           corepack install
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
         with:
           node-version: 24
       - name: Resolve yarn cache folder
         id: yarn-config
         run: echo "cacheFolder=$(yarn config get cacheFolder)" >> "$GITHUB_OUTPUT"
       - name: Restore yarn install cache (node_modules + cacheFolder + install-state)
-        uses: actions/cache@v4
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
           path: |
             ${{ steps.yarn-config.outputs.cacheFolder }}