use pre-build images ci

.github/actions/setup-rust-2/action.yml

@@ -0,0 +1,40 @@
+name: "Setup Rust (Custom AMI)"
+description: "Lightweight Rust setup for custom AMI runners with pre-installed toolchain"
+
+inputs:
+  cache-suffix:
+    description: "optional suffix for cache key to isolate builds with different RUSTFLAGS (e.g. 'sanitizer')"
+    required: false
+    default: ""
+  targets:
+    description: "optional targets override (for cache key compatibility)"
+    required: false
+  timestamp:
+    description: "Timestamp cache with cargo sweep"
+    default: "false"
+
+runs:
+  using: "composite"
+  steps:
+    - name: Get Rust version for cache key
+      id: rust-version
+      shell: bash
+      run: |
+        # Get a short hash of the rustc version (matches dtolnay/rust-toolchain cachekey format)
+        RUSTC_VERSION=$(rustc --version)
+        CACHEKEY=$(echo "$RUSTC_VERSION" | sha256sum | cut -c1-20)
+        echo "cachekey=$CACHEKEY" >> $GITHUB_OUTPUT
+
+    - name: Rust Dependency Cache
+      uses: Swatinem/rust-cache@v2
+      with:
+#        save-if: ${{ github.ref_name == 'develop' }}
+        shared-key: "rust-cache-${{ runner.os }}-${{ runner.arch }}-${{ runner.environment }}-${{ steps.rust-version.outputs.cachekey }}-${{ inputs.targets }}${{ inputs.cache-suffix && format('-{0}', inputs.cache-suffix) || '' }}"
+
+    # Note: sccache is configured by runs-on/action with sccache: s3 in the workflow
+    # Do NOT add mozilla-actions/sccache-action here as it would override S3 config with GH cache
+
+    - name: Timestamp Cache
+      shell: bash
+      if: ${{ inputs.timestamp == 'true' && github.ref_name == 'develop' }}
+      run: cargo sweep --stamp

.github/runs-on.yml

@@ -1,11 +1,28 @@
+# Custom AMIs for Vortex CI runners
+# These AMIs are automatically rebuilt every 25 days by the ami-prebuild.yml workflow
+# to keep the GitHub Actions runner agent up to date (required to be <30 days old).
+# AMIs are deprecated after 25 days via Packer's deprecate_at setting.
+#
+# AMI naming pattern: vortex-ci-{arch}-{timestamp}
+# Built with: .github/actions/build-ami and .github/packer/vortex-ci.pkr.hcl
+runners:
+  rust-amd64-medium:
+    image: vortex-ci-amd64
+    cpu: 8
+    family: [m7i, m7i-flex, m7a]
+  rust-amd64-large:
+    image: vortex-ci-amd64
+    cpu: 16
+    family: [m7i, m7i-flex, m7a]
+
 images:
   vortex-ci-amd64:
     platform: "linux"
     arch: "x64"
-    name: "vortex-ci-*"
+    name: "vortex-ci-x64-*"
     owner: "375504701696"
   vortex-ci-arm64:
     platform: "linux"
     arch: "arm64"
-    name: "vortex-ci-*"
+    name: "vortex-ci-arm64-*"
     owner: "375504701696"