diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d7ae4da..979b80a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ jobs:
     name: Rust 1.89 minimum
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@1.89.0
       - uses: Swatinem/rust-cache@v2
         with:
@@ -31,7 +31,7 @@ jobs:
     name: Rust workspace
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@stable
         with:
           components: clippy, rustfmt
@@ -45,7 +45,7 @@ jobs:
     name: DLR workspace
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@stable
         with:
           components: clippy, rustfmt
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 983c1a7..7b7d54a 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -19,7 +19,7 @@ jobs:
     name: Release preflight
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           ref: ${{ inputs.tag || github.ref }}
       - uses: dtolnay/rust-toolchain@stable
@@ -41,49 +41,69 @@ jobs:
             --workspace --all-targets -- -D warnings
           cargo test --locked --manifest-path integrations/dlr/Cargo.toml --workspace
 
-  linux-binaries:
+  release-binaries:
+    name: Release binary (${{ matrix.target }})
     needs: release-preflight
-    runs-on: ubuntu-24.04
+    runs-on: ${{ matrix.runner }}
     permissions:
       contents: read
       id-token: write
     strategy:
       fail-fast: false
       matrix:
-        target:
-          - x86_64-unknown-linux-musl
-          - aarch64-unknown-linux-musl
+        include:
+          - target: x86_64-unknown-linux-musl
+            runner: ubuntu-24.04
+            builder: cross
+            file_pattern: "x86-64"
+          - target: aarch64-unknown-linux-musl
+            runner: ubuntu-24.04
+            builder: cross
+            file_pattern: "ARM aarch64"
+          - target: aarch64-apple-darwin
+            runner: macos-15
+            builder: cargo
+            file_pattern: "arm64"
+          - target: x86_64-apple-darwin
+            runner: macos-15-intel
+            builder: cargo
+            file_pattern: "x86_64"
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           ref: ${{ inputs.tag || github.ref }}
       - uses: dtolnay/rust-toolchain@stable
         with:
           targets: ${{ matrix.target }}
       - uses: taiki-e/install-action@cross
+        if: runner.os == 'Linux'
       - uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2
       - name: Build sc
-        run: cross build --locked --release --target "${{ matrix.target }}" --bin sc
+        run: ${{ matrix.builder }} build --locked --release --target "${{ matrix.target }}" --bin sc
       - name: Package and validate binary
         env:
+          FILE_PATTERN: ${{ matrix.file_pattern }}
           TARGET: ${{ matrix.target }}
         run: |
           mkdir -p dist/package
           cp "target/$TARGET/release/sc" dist/package/sc
           tar -C dist/package -czf "dist/sc-$TARGET.tar.gz" sc
-          (cd dist && sha256sum "sc-$TARGET.tar.gz" > "sc-$TARGET.tar.gz.sha256")
+          if command -v sha256sum >/dev/null 2>&1; then
+            (cd dist && sha256sum "sc-$TARGET.tar.gz" > "sc-$TARGET.tar.gz.sha256")
+          else
+            (cd dist && shasum -a 256 "sc-$TARGET.tar.gz" > "sc-$TARGET.tar.gz.sha256")
+          fi
           cosign sign-blob --yes \
             --bundle "dist/sc-$TARGET.tar.gz.sigstore.json" \
             "dist/sc-$TARGET.tar.gz"
           cosign sign-blob --yes \
             --bundle "dist/sc-$TARGET.tar.gz.sha256.sigstore.json" \
             "dist/sc-$TARGET.tar.gz.sha256"
-          if [[ "$TARGET" == "x86_64-unknown-linux-musl" ]]; then
+          file "target/$TARGET/release/sc" | grep -F "$FILE_PATTERN"
+          if [[ "$TARGET" != "aarch64-unknown-linux-musl" ]]; then
             "target/$TARGET/release/sc" --version
-          else
-            file "target/$TARGET/release/sc" | grep -F "ARM aarch64"
           fi
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v6
         with:
           name: sc-${{ matrix.target }}
           path: |
@@ -95,16 +115,16 @@ jobs:
 
   github-release:
     name: Publish GitHub release
-    needs: linux-binaries
+    needs: release-binaries
     runs-on: ubuntu-24.04
     permissions:
       contents: write
     steps:
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v7
         with:
           path: dist
           merge-multiple: true
-      - uses: softprops/action-gh-release@v2
+      - uses: softprops/action-gh-release@v3
         with:
           tag_name: ${{ inputs.tag || github.ref_name }}
           generate_release_notes: true
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 92690a4..8bee1e7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,15 @@ All notable changes to Subconscious Code are documented here. This project uses
 
 ## [Unreleased]
 
+### Added
+
+- Precompiled Apple Silicon and Intel macOS release archives, checksums, and
+  keyless Sigstore bundles for installer-driven setup without Cargo.
+
+### Changed
+
+- Release automation now uses Node 24-compatible GitHub Actions.
+
 ## [0.1.1] - 2026-09-03
 
 ### Added
diff --git a/README.md b/README.md
index 0d1059c..206e7cc 100644
--- a/README.md
+++ b/README.md
@@ -41,17 +41,30 @@ cd subconscious-code
 cargo install --locked --path crates/rc-cli
 ```
 
-### Install a Linux release
+### Install a release
 
-Tagged releases provide static `x86_64` and `aarch64` Linux binaries. Replace
-`VERSION` with the release you want to install:
+Tagged releases provide precompiled binaries for Apple Silicon and Intel Macs,
+plus static `x86_64` and `aarch64` Linux binaries. Replace `VERSION` with the
+release you want to install:
 
 ```sh
 VERSION=v0.1.0
-TARGET=x86_64-unknown-linux-musl # or aarch64-unknown-linux-musl
+case "$(uname -s):$(uname -m)" in
+  Darwin:arm64) TARGET=aarch64-apple-darwin ;;
+  Darwin:x86_64) TARGET=x86_64-apple-darwin ;;
+  Linux:aarch64|Linux:arm64) TARGET=aarch64-unknown-linux-musl ;;
+  Linux:x86_64|Linux:amd64) TARGET=x86_64-unknown-linux-musl ;;
+  *) echo "Unsupported platform: $(uname -s) $(uname -m)" >&2; exit 1 ;;
+esac
 curl -fLO "https://github.com/subconscious-systems/subconscious-code/releases/download/$VERSION/sc-$TARGET.tar.gz"
 curl -fLO "https://github.com/subconscious-systems/subconscious-code/releases/download/$VERSION/sc-$TARGET.tar.gz.sha256"
-sha256sum --check "sc-$TARGET.tar.gz.sha256"
+if command -v sha256sum >/dev/null 2>&1; then
+  sha256sum --check "sc-$TARGET.tar.gz.sha256"
+else
+  expected="$(awk '{print $1}' "sc-$TARGET.tar.gz.sha256")"
+  actual="$(shasum -a 256 "sc-$TARGET.tar.gz" | awk '{print $1}')"
+  test "$actual" = "$expected"
+fi
 tar -xzf "sc-$TARGET.tar.gz"
 mkdir -p "$HOME/.local/bin"
 install -m 0755 sc "$HOME/.local/bin/sc"
@@ -59,6 +72,8 @@ sc --version
 ```
 
 Release archives and their checksum files include keyless Sigstore bundles.
+The `subc sc install` command uses the same OS/architecture mapping and installs
+the matching archive without requiring Cargo.
 
 Launch `sc`. On first use, the CLI securely prompts for your Subconscious API
 key and saves it to `~/.sc/key` with user-only permissions: