fix(ci): strip v prefix for deb/rpm version, pass ARCH to guest image build

- nfpm.yaml: remove hardcoded v prefix from version field
- release.yml: strip v prefix with ${VERSION#v} for nfpm
- build_release_artifacts.sh: pass ARCH to build_guest_image.sh so
  aarch64 jobs don't default to x86_64 on the runner

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: dpsoft

.github/workflows/release.yml

@@ -77,15 +77,15 @@ jobs:
 
       - name: Build .deb package
         run: |
-          VERSION="${{ github.ref_name }}" ARCH="${{ matrix.arch }}" \
+          VERSION="${VERSION#v}" ARCH="$ARCH" \
             nfpm package --packager deb --target target/release-artifacts/${{ github.ref_name }}/
         env:
           VERSION: ${{ github.ref_name }}
           ARCH: ${{ matrix.arch }}
 
       - name: Build .rpm package
         run: |
-          VERSION="${{ github.ref_name }}" ARCH="${{ matrix.arch }}" \
+          VERSION="${VERSION#v}" ARCH="$ARCH" \
             nfpm package --packager rpm --target target/release-artifacts/${{ github.ref_name }}/
         env:
           VERSION: ${{ github.ref_name }}

nfpm.yaml

@@ -11,7 +11,7 @@
 
 name: voidbox
 arch: "${ARCH}"
-version: "v${VERSION}"
+version: "${VERSION}"
 maintainer: "Diego Parra <diegolparra@gmail.com>"
 description: "Composable workflow sandbox with KVM micro-VMs and native observability"
 homepage: "https://github.com/the-void-ia/void-box"

scripts/build_release_artifacts.sh

@@ -49,6 +49,7 @@ echo "[void-box] Guest agent built: $RELEASE_DIR/guest-agent-${ARCH}"
 # ── 3. Build initramfs ──────────────────────────────────────────────────────
 
 echo "[void-box] Building initramfs..."
+ARCH="$ARCH" \
 OUT_DIR="$RELEASE_DIR/rootfs-tmp" \
 OUT_CPIO="$RELEASE_DIR/void-box-initramfs-${VERSION}-${ARCH}.cpio.gz" \
   ./scripts/build_guest_image.sh