优化 Bun 下载逻辑，简化代码结构

.gitea/workflows/package.yml

@@ -72,25 +72,12 @@ jobs:
           esac
 
           BUN_ASSET="bun-linux-${BUN_ARCH}.zip"
-          BUN_URLS="
-          https://ghproxy.net/https://github.com/oven-sh/bun/releases/latest/download/${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/${BUN_ASSET}
-          "
+          BUN_URL="https://ghfast.top/https://github.com/oven-sh/bun/releases/latest/download/${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."
+          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
+            echo "Failed to download Bun from configured mirror."
             exit 1
           fi