fix: fail mise-install when curl pipeline errors

Do not print success after a failed curl | sh install; enable pipefail and verify mise is on PATH before continuing.

script/mise-install.sh

@@ -20,18 +20,28 @@ EOF
 
 dotfile_help_requested "${1:-}" && dotfile_show_help
 
-set -e
+set -euo pipefail
 
 GREEN='\033[0;32m'
 RED='\033[0;31m'
 YELLOW='\033[1;33m'
 NC='\033[0m'
 
+mise_fail() {
+    echo -e "${RED}mise 安装失败，请检查错误信息${NC}" >&2
+    exit 1
+}
+
 if ! command -v mise &>/dev/null; then
     echo -e "${YELLOW}mise 未安装. 正在安装 mise...${NC}"
-    curl https://mise.run | sh
+    # 无 pipefail 时 curl 失败 sh 仍可能退出 0，会误报「安装完成」
+    curl -fL --retry 3 https://mise.run | sh || mise_fail
     export PATH="$HOME/.local/bin:$PATH"
 
+    if ! command -v mise &>/dev/null; then
+        mise_fail
+    fi
+
     if [ -f ~/.config/fish/config.fish ]; then
         if ! grep -q "mise activate" ~/.config/fish/config.fish; then
             echo -e "${YELLOW}正在为 fish shell 配置 mise...${NC}"
@@ -72,6 +82,5 @@ fi
 if command -v mise &>/dev/null; then
     echo -e "${GREEN}mise 安装成功!${NC}"
 else
-    echo -e "${RED}mise 安装失败，请检查错误信息${NC}"
-    exit 1
+    mise_fail
 fi