优化 Bun 安装脚本，支持多个下载源

.gitea/workflows/package.yml

@@ -56,6 +56,8 @@ jobs:
 
       - name: Install Bun
         run: |
+          set -euo pipefail
+
           case "$(uname -m)" in
             x86_64)
               BUN_ARCH="x64"
@@ -70,9 +72,28 @@ jobs:
           esac
 
           BUN_ASSET="bun-linux-${BUN_ARCH}.zip"
-          BUN_MIRROR_URL="https://ghproxy.net/https://github.com/oven-sh/bun/releases/latest/download/${BUN_ASSET}"
+          BUN_URLS="
+          https://ghproxy.net/https://github.com/oven-sh/bun/releases/latest/download/${BUN_ASSET}
+          https://ghfast.top/https://github.com/oven-sh/bun/releases/latest/download/${BUN_ASSET}
+          https://github.moeyy.xyz/https://github.com/oven-sh/bun/releases/latest/download/${BUN_ASSET}
+          https://github.com/oven-sh/bun/releases/latest/download/${BUN_ASSET}
+          "
+
+          rm -f /tmp/bun.zip
+          download_success=0
+          for bun_url in $BUN_URLS; do
+            echo "Trying Bun download: ${bun_url}"
+            if curl -fL --connect-timeout 15 --max-time 180 --retry 2 --retry-delay 3 "$bun_url" -o /tmp/bun.zip; then
+              download_success=1
+              break
+            fi
+          done
+
+          if [ "$download_success" -ne 1 ]; then
+            echo "Failed to download Bun from all configured mirrors."
+            exit 1
+          fi
 
-          curl -fL --retry 3 --retry-delay 5 "$BUN_MIRROR_URL" -o /tmp/bun.zip
           rm -rf "$HOME/.bun"
           mkdir -p "$HOME/.bun/bin"
           unzip -qo /tmp/bun.zip -d /tmp