feat: add CI release workflow with prebuilt binaries

- Add GitHub Actions workflow for cross-compilation (macOS arm64/x86_64, Linux x86_64/arm64)
- Add setup-workspace.sh to replace path deps with crates.io versions in CI
- Bump version to v0.5.0

Author: ZhiXiao-Lin

.github/setup-workspace.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+# Setup for building the Code crate standalone in CI.
+# Replaces path dependencies with crates.io versions so we don't need
+# the full monorepo workspace.
+
+set -euo pipefail
+
+echo "Replacing path dependencies with crates.io versions..."
+
+# Replace path deps with registry versions in Cargo.toml
+sed -i.bak \
+  -e 's|a3s-tools-core = { version = "0.1", path = "../tools-core" }|a3s-tools-core = "0.1"|' \
+  -e 's|a3s-lane = { version = "0.1", path = "../lane" }|a3s-lane = "0.1"|' \
+  -e 's|a3s-cron = { version = "0.1", path = "../cron" }|a3s-cron = "0.1"|' \
+  -e 's|a3s-privacy = { version = "0.1", path = "../privacy" }|a3s-privacy = "0.1"|' \
+  -e 's|a3s-updater = { version = "0.2", path = "../updater" }|a3s-updater = "0.2"|' \
+  Cargo.toml
+
+rm -f Cargo.toml.bak
+
+echo "Path dependencies replaced. Ready to build."

.github/workflows/release.yml

@@ -0,0 +1,113 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - target: aarch64-apple-darwin
+            os: macos-latest
+            name: darwin-arm64
+          - target: x86_64-apple-darwin
+            os: macos-latest
+            name: darwin-x86_64
+          - target: x86_64-unknown-linux-gnu
+            os: ubuntu-latest
+            name: linux-x86_64
+          - target: aarch64-unknown-linux-gnu
+            os: ubuntu-latest
+            name: linux-arm64
+            cross: true
+
+    name: Build ${{ matrix.name }}
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup workspace
+        run: bash .github/setup-workspace.sh
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: ${{ matrix.target }}
+
+      - name: Install protobuf compiler
+        shell: bash
+        run: |
+          if [ "${{ matrix.os }}" = "ubuntu-latest" ]; then
+            sudo apt-get update && sudo apt-get install -y protobuf-compiler
+          else
+            brew install protobuf
+          fi
+
+      - name: Install cross-compilation tools
+        if: matrix.cross
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y gcc-aarch64-linux-gnu g++-aarch64-linux-gnu
+          echo "CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc" >> $GITHUB_ENV
+
+      - name: Build
+        run: cargo build --release --target ${{ matrix.target }} --bin a3s-code
+
+      - name: Strip binary
+        shell: bash
+        run: |
+          BINARY="target/${{ matrix.target }}/release/a3s-code"
+          if [ "${{ matrix.cross }}" = "true" ]; then
+            aarch64-linux-gnu-strip "$BINARY" || true
+          else
+            strip "$BINARY" || true
+          fi
+
+      - name: Package
+        shell: bash
+        run: |
+          VERSION="${GITHUB_REF#refs/tags/v}"
+          ARCHIVE="a3s-code-${VERSION}-${{ matrix.name }}.tar.gz"
+          tar -czf "$ARCHIVE" -C "target/${{ matrix.target }}/release" a3s-code
+          echo "ARCHIVE=$ARCHIVE" >> $GITHUB_ENV
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: a3s-code-${{ matrix.name }}
+          path: ${{ env.ARCHIVE }}
+
+  release:
+    name: Create Release
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: artifacts
+          merge-multiple: true
+
+      - name: Generate checksums
+        run: |
+          cd artifacts
+          sha256sum *.tar.gz > checksums.txt
+          cat checksums.txt
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          generate_release_notes: true
+          files: |
+            artifacts/*.tar.gz
+            artifacts/checksums.txt

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "a3s-code"
-version = "0.4.7"
+version = "0.5.0"
 edition = "2021"
 authors = ["A3S Lab Team"]
 license = "MIT"