disable Pi builds in CI: QEMU crashes on aarch64 Node.js packages

markdown-preview.nvim runs yarn install which compiles native binaries.
Under QEMU aarch64 emulation on x86_64 this causes 'Illegal instruction'
crashes. Pi images must be built locally or on a native aarch64 runner.

Pi deployment still works via Comin (builds locally on the Pi itself).

.forgejo/workflows/ci.yml

@@ -22,5 +22,6 @@ jobs:
       - name: Build cryodev-main
         run: nix build .#nixosConfigurations.cryodev-main.config.system.build.toplevel --impure
 
-      - name: Build cryodev-pi
-        run: nix build .#nixosConfigurations.cryodev-pi.config.system.build.toplevel --impure
+      # Pi build disabled: QEMU emulation crashes on Node.js packages
+      # - name: Build cryodev-pi
+      #   run: nix build .#nixosConfigurations.cryodev-pi.config.system.build.toplevel --impure

.forgejo/workflows/deploy.yml

@@ -25,82 +25,19 @@ jobs:
       - name: Build cryodev-main
         run: nix build .#nixosConfigurations.cryodev-main.config.system.build.toplevel --impure
 
-      - name: Build cryodev-pi
-        run: nix build .#nixosConfigurations.cryodev-pi.config.system.build.toplevel --impure
+      # Pi build disabled: QEMU emulation crashes on Node.js packages
+      # - name: Build cryodev-pi
+      #   run: nix build .#nixosConfigurations.cryodev-pi.config.system.build.toplevel --impure
 
-  build-pi-images:
-    needs: build-hosts
-    runs-on: host
-    strategy:
-      matrix:
-        host: [cryodev-pi]
-      fail-fast: false
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Build SD image for ${{ matrix.host }}
-        run: |
-          echo "Building SD image for: ${{ matrix.host }}"
-          nix build .#nixosConfigurations.${{ matrix.host }}.config.system.build.sdImage \
-            --extra-platforms aarch64-linux \
-            --out-link result-${{ matrix.host }}
-
-          IMAGE_PATH=$(find result-${{ matrix.host }} -name "*.img.zst" -type f | head -1)
-          if [ -z "$IMAGE_PATH" ]; then
-            echo "Error: No image found!"
-            exit 1
-          fi
-
-          cp "$IMAGE_PATH" ./${{ matrix.host }}-sd-image.img.zst
-          sha256sum ${{ matrix.host }}-sd-image.img.zst > ${{ matrix.host }}-sd-image.img.zst.sha256
-
-          echo "Image size:"
-          ls -lh ${{ matrix.host }}-sd-image.img.zst
-
-      - name: Upload artifact
-        uses: actions/upload-artifact@v3
-        with:
-          name: ${{ matrix.host }}-sd-image
-          path: |
-            ${{ matrix.host }}-sd-image.img.zst
-            ${{ matrix.host }}-sd-image.img.zst.sha256
-
-  create-release:
-    needs: build-pi-images
-    runs-on: host
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Download all artifacts
-        uses: actions/download-artifact@v3
-        with:
-          path: artifacts/
-
-      - name: Create Release and Upload
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          VERSION="v$(date +%Y-%m-%d)-$(git rev-parse --short HEAD)"
-
-          curl -s -X POST \
-            -H "Authorization: token ${GITHUB_TOKEN}" \
-            -H "Content-Type: application/json" \
-            -d "{\"tag_name\": \"${VERSION}\", \"name\": \"Pi Images ${VERSION}\", \"body\": \"Raspberry Pi SD card images. See docs for usage.\", \"draft\": false, \"prerelease\": false}" \
-            "https://git.cryodev.xyz/api/v1/repos/${GITHUB_REPOSITORY}/releases" \
-            -o release.json
-
-          RELEASE_ID=$(jq -r '.id' release.json)
-          echo "Release ID: $RELEASE_ID"
-
-          for file in $(find artifacts -type f); do
-            echo "Uploading: $(basename $file)"
-            curl -s -X POST \
-              -H "Authorization: token ${GITHUB_TOKEN}" \
-              -H "Content-Type: application/octet-stream" \
-              --data-binary @"$file" \
-              "https://git.cryodev.xyz/api/v1/repos/${GITHUB_REPOSITORY}/releases/${RELEASE_ID}/assets?name=$(basename $file)"
-          done
-
-          echo "Done: https://git.cryodev.xyz/${GITHUB_REPOSITORY}/releases/tag/${VERSION}"
+  # Pi builds require native aarch64 or reliable QEMU emulation.
+  # Currently disabled due to QEMU crashes with Node.js packages.
+  # Build Pi images locally with:
+  #   nix build .#nixosConfigurations.cryodev-pi.config.system.build.sdImage --extra-platforms aarch64-linux
+  #
+  # build-pi-images:
+  #   needs: build-hosts
+  #   ...
+  #
+  # create-release:
+  #   needs: build-pi-images
+  #   ...