ci: add GitHub Actions release pipeline for macOS binaries

Builds aarch64 + x86_64 binaries on tag push, publishes to GitHub Releases.
Update README with one-line install from releases.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: bluedusk

.github/workflows/release.yml

@@ -0,0 +1,61 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        include:
+          - target: aarch64-apple-darwin
+            os: macos-latest
+            name: diskcopilot-cli-aarch64-apple-darwin
+          - target: x86_64-apple-darwin
+            os: macos-latest
+            name: diskcopilot-cli-x86_64-apple-darwin
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: ${{ matrix.target }}
+
+      - name: Build
+        run: cargo build --release --target ${{ matrix.target }}
+
+      - name: Package
+        run: |
+          cd target/${{ matrix.target }}/release
+          tar czf ../../../${{ matrix.name }}.tar.gz diskcopilot-cli
+          cd ../../..
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.name }}
+          path: ${{ matrix.name }}.tar.gz
+
+  release:
+    needs: build
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          merge-multiple: true
+
+      - name: Create Release
+        uses: softprops/action-gh-release@v2
+        with:
+          generate_release_notes: true
+          files: |
+            diskcopilot-cli-aarch64-apple-darwin.tar.gz
+            diskcopilot-cli-x86_64-apple-darwin.tar.gz

README.md

@@ -16,14 +16,19 @@ Designed for two consumers:
 ## Install
 
 ```bash
-# From source
-cargo install --path .
+# One-line install (Apple Silicon)
+curl -fsSL https://github.com/bluedusk/diskcopilot-cli/releases/latest/download/diskcopilot-cli-aarch64-apple-darwin.tar.gz | tar xz && sudo mv diskcopilot-cli /usr/local/bin/
 
-# Or via Makefile
-make install
+# Intel Mac
+curl -fsSL https://github.com/bluedusk/diskcopilot-cli/releases/latest/download/diskcopilot-cli-x86_64-apple-darwin.tar.gz | tar xz && sudo mv diskcopilot-cli /usr/local/bin/
 ```
 
-Requires Rust 1.70+.
+Or build from source (requires Rust 1.70+):
+
+```bash
+git clone https://github.com/bluedusk/diskcopilot-cli
+cd diskcopilot-cli && make install
+```
 
 ## Usage