fix workflow

.gitea/workflows/deploy-pages.yaml

@@ -19,19 +19,14 @@ jobs:
         with:
           node-version: "20"
 
-      - name: Install cobalt (prebuilt)
+      - name: Install cobalt (prebuilt release)
         shell: bash
         run: |
-          if ! command -v curl >/dev/null 2>&1; then
+          set -euo pipefail
-            (apt-get update && apt-get install -y curl) \
-            || (apk add --no-cache curl) \
-            || (dnf -y install curl) \
-            || (pacman -Sy --noconfirm curl)
-          fi
           curl -LSfs https://raw.githubusercontent.com/crate-ci/gh-install/master/v1/install.sh \
             | sh -s -- --git cobalt-org/cobalt.rs --crate cobalt
-          cobalt --version
+          ~/.cargo/bin/cobalt --version  # 動作確認
-        # cobaltのインストール手順（prebuilt）。:contentReference[oaicite:7]{index=7}
+        # 公式ドキュメントの「Pre-built Binary」を使用（rustc不要）。:contentReference[oaicite:1]{index=1}
 
       - name: Build site with cobalt
         run: cobalt build