Update workflows to use actions/checkout@v6 and enhance README with TLS modes and admin credential retrieval instructions

.github/workflows/init.yml

@@ -17,6 +17,7 @@ on:
         options:
           - 'letsencrypt'
           - 'custom'
+          - 'none'
         default: 'letsencrypt'
 
 jobs:
@@ -27,7 +28,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Validate required variables
         run: |
@@ -133,3 +134,9 @@ jobs:
           echo "| Host | ${{ vars.SSH_HOST }} |" >> $GITHUB_STEP_SUMMARY
           echo "| TLS Mode | ${{ inputs.tls_mode }} |" >> $GITHUB_STEP_SUMMARY
           echo "| Image | ${{ steps.setup.outputs.sfp-image }} |" >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          echo "### Admin Credentials" >> $GITHUB_STEP_SUMMARY
+          echo "Credentials are stored securely on the server. To retrieve them:" >> $GITHUB_STEP_SUMMARY
+          echo '```' >> $GITHUB_STEP_SUMMARY
+          echo "ssh ${{ vars.SSH_USER || 'root' }}@${{ vars.SSH_HOST }} \"cat ${{ vars.BASE_DIR || './sfp-server' }}/tenants/${{ vars.TENANT_NAME }}/credentials.json\"" >> $GITHUB_STEP_SUMMARY
+          echo '```' >> $GITHUB_STEP_SUMMARY