전체 설치 스크립트 GitHub 릴리스 에셋 검증 및 폴백 다운로드 방어 로직 적용

install-dua.sh

@@ -145,13 +145,22 @@ install_from_github() {
 	tag="$(get_latest_tag)"
 	local filename="dua-${tag}-${target}.tar.gz"
 	local download_url="https://github.com/${REPO}/releases/download/${tag}/${filename}"
+	local fallback_filename="dua-${FALLBACK_TAG}-${target}.tar.gz"
+	local fallback_url="https://github.com/${REPO}/releases/download/${FALLBACK_TAG}/${fallback_filename}"
 
 	info "Downloading: $download_url"
 	TMPDIR="$(mktemp -d)"
 	trap '[[ -d "${TMPDIR:-}" ]] && rm -rf "$TMPDIR"' EXIT
 
-	curl -fsSL --progress-bar -o "${TMPDIR}/${filename}" "$download_url" ||
-		error "Download failed: $download_url"
+	if ! curl -fsSL --progress-bar -o "${TMPDIR}/${filename}" "$download_url"; then
+		if [[ "$tag" != "$FALLBACK_TAG" ]]; then
+			warn "Primary download failed. Retrying with fallback tag (${FALLBACK_TAG}): $fallback_url"
+			curl -fsSL --progress-bar -o "${TMPDIR}/${filename}" "$fallback_url" ||
+				error "Download failed: $fallback_url"
+		else
+			error "Download failed: $download_url"
+		fi
+	fi
 
 	info "Extracting..."
 	tar -xzf "${TMPDIR}/${filename}" -C "$TMPDIR"