Add cross-platform release workflow for Win/Mac/Linux builds

.github/workflows/release.yml

@@ -0,0 +1,131 @@
+name: Release
+
+on:
+  release:
+    types: [created]
+  workflow_dispatch:
+
+env:
+  CARGO_TERM_COLOR: always
+  RUST_BACKTRACE: 1
+
+jobs:
+  build:
+    name: Build ${{ matrix.target }}
+    runs-on: ${{ matrix.os }}
+    permissions:
+      contents: read
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: ubuntu-latest
+            target: x86_64-unknown-linux-gnu
+            artifact_name: bitcell-linux-x86_64
+          - os: macos-latest
+            target: x86_64-apple-darwin
+            artifact_name: bitcell-macos-x86_64
+          - os: macos-14  # Native ARM64 runner
+            target: aarch64-apple-darwin
+            artifact_name: bitcell-macos-aarch64
+          - os: windows-latest
+            target: x86_64-pc-windows-msvc
+            artifact_name: bitcell-windows-x86_64
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: ${{ matrix.target }}
+
+      - name: Cache cargo registry
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+          key: ${{ runner.os }}-${{ matrix.target }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ matrix.target }}-cargo-
+
+      - name: Build release binaries
+        run: cargo build --release --target ${{ matrix.target }} -p bitcell-node -p bitcell-admin
+
+      - name: Create artifact directory
+        shell: bash
+        run: mkdir -p artifacts
+
+      - name: Copy binaries (Unix)
+        if: runner.os != 'Windows'
+        shell: bash
+        run: |
+          cp target/${{ matrix.target }}/release/bitcell-node artifacts/
+          cp target/${{ matrix.target }}/release/bitcell-admin artifacts/
+
+      - name: Copy binaries (Windows)
+        if: runner.os == 'Windows'
+        shell: bash
+        run: |
+          cp target/${{ matrix.target }}/release/bitcell-node.exe artifacts/
+          cp target/${{ matrix.target }}/release/bitcell-admin.exe artifacts/
+
+      - name: Create archive (Unix)
+        if: runner.os != 'Windows'
+        shell: bash
+        run: |
+          cd artifacts
+          tar -czvf ../${{ matrix.artifact_name }}.tar.gz *
+          cd ..
+
+      - name: Create archive (Windows)
+        if: runner.os == 'Windows'
+        shell: pwsh
+        run: |
+          Compress-Archive -Path artifacts/* -DestinationPath ${{ matrix.artifact_name }}.zip
+
+      - name: Upload artifact (Unix)
+        if: runner.os != 'Windows'
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.artifact_name }}
+          path: ${{ matrix.artifact_name }}.tar.gz
+          retention-days: 7
+
+      - name: Upload artifact (Windows)
+        if: runner.os == 'Windows'
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.artifact_name }}
+          path: ${{ matrix.artifact_name }}.zip
+          retention-days: 7
+
+  release:
+    name: Upload Release Assets
+    needs: build
+    runs-on: ubuntu-latest
+    if: github.event_name == 'release'
+    permissions:
+      contents: write
+
+    steps:
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: artifacts
+
+      - name: Display structure of downloaded files
+        run: ls -la artifacts/
+
+      - name: Upload release assets
+        uses: softprops/action-gh-release@v2
+        with:
+          files: |
+            artifacts/bitcell-linux-x86_64/bitcell-linux-x86_64.tar.gz
+            artifacts/bitcell-macos-x86_64/bitcell-macos-x86_64.tar.gz
+            artifacts/bitcell-macos-aarch64/bitcell-macos-aarch64.tar.gz
+            artifacts/bitcell-windows-x86_64/bitcell-windows-x86_64.zip
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}