ci: add auto-release workflow and update test to use cargo-aware caching

.github/workflows/release.yaml

@@ -0,0 +1,60 @@
+name: Release
+
+permissions:
+  contents: write
+
+on:
+  push:
+    # Run on x.y.z tags.
+    tags:
+      - "**[0-9]+.[0-9]+.[0-9]+*"
+  # Allow manual triggering.
+  workflow_dispatch:
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        include:
+          - os: ubuntu-22.04
+            target: x86_64-unknown-linux-gnu
+          - os: ubuntu-22.04-arm
+            target: aarch64-unknown-linux-gnu
+          - os: macos-14
+            target: aarch64-apple-darwin
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+      - name: Build & test & rename
+        run: |
+          mv .cargo/config-portable.toml .cargo/config.toml
+          cargo build --profile dist
+          cargo test --profile dist
+
+          mkdir artifacts
+          mv target/dist/deacon artifacts/deacon-${{ matrix.target }}
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: build-${{ matrix.os }}
+          path: artifacts
+
+  release:
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          path: release_artifacts
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: release_artifacts/**/*
+          draft: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/test.yml

@@ -1,9 +1,10 @@
 name: Tests
 on:
   push:
-    branches: [ main ]
+    branches: [main]
   pull_request:
-    branches: [ main ]
+    branches: [main]
+  workflow_dispatch:
 env:
   CARGO_TERM_COLOR: always
 jobs:
@@ -19,12 +20,6 @@ jobs:
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@stable
       - name: Cache cargo registry
-        uses: actions/cache@v4
-        with:
-          path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-            target
-          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+        uses: Swatinem/rust-cache@v2
       - name: Run tests
-        run: cargo test --verbose
+        run: cargo test --verbose