feat: add Pacman backend for Arch Linux, fix Arch CI stale packages

.gitea/workflows/ci.yml

@@ -347,12 +347,28 @@ jobs:
       - name: Install build dependencies
         run: |
           sudo pacman -Syu --noconfirm rust cargo systemd git base-devel gcc
+      - name: Clean previous build artifacts
+        run: |
+          cargo clean
+          rm -f releases/linux-patch-api-*.pkg.tar.zst
       - name: Build release binary
         run: cargo build --release
       - name: Build Arch package
         run: |
           chmod +x build-arch.sh
           SKIP_CARGO_BUILD=1 ./build-arch.sh
+      - name: Verify Arch package
+        run: |
+          FILE=$(ls releases/*.pkg.tar.zst 2>/dev/null | head -1)
+          if [ -z "$FILE" ]; then
+            echo "ERROR: No Arch package found!"
+            exit 1
+          fi
+          EXPECTED_VERSION=$(grep '^version' Cargo.toml | head -1 | sed 's/.*=.*"\([^"]*\)".*/\1/')
+          echo "Expected version: $EXPECTED_VERSION"
+          echo "Package file: $FILE"
+          # Verify the package contains the correct binary version
+          pacman -Qip "$FILE" 2>/dev/null | grep -i version || true
       - name: Upload to Gitea Release
         if: startsWith(github.ref, 'refs/tags/')
         env: