From 8a55e33a00b43b9ba33a370eb0bd62fe68c3d235 Mon Sep 17 00:00:00 2001
From: Tw93 <tw93@qq.com>
Date: Sat, 3 Jan 2026 14:06:29 +0800
Subject: [PATCH] refactor: ensure mail cleaning configuration variables
 default to empty if unset.

---
 lib/clean/user.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/clean/user.sh b/lib/clean/user.sh
index 26fe25d..5f7a096 100644
--- a/lib/clean/user.sh
+++ b/lib/clean/user.sh
@@ -401,7 +401,7 @@ clean_recent_items() {
 }
 clean_mail_downloads() {
     stop_section_spinner
-    local mail_age_days=$MOLE_MAIL_AGE_DAYS
+    local mail_age_days=${MOLE_MAIL_AGE_DAYS:-}
     if ! [[ "$mail_age_days" =~ ^[0-9]+$ ]]; then
         mail_age_days=30
     fi
@@ -418,7 +418,7 @@ clean_mail_downloads() {
             if ! [[ "$dir_size_kb" =~ ^[0-9]+$ ]]; then
                 dir_size_kb=0
             fi
-            local min_kb="$MOLE_MAIL_DOWNLOADS_MIN_KB"
+            local min_kb="${MOLE_MAIL_DOWNLOADS_MIN_KB:-}"
             if ! [[ "$min_kb" =~ ^[0-9]+$ ]]; then
                 min_kb=5120
             fi