修复正则匹配字符串不生效的问题

config.json

@@ -21,7 +21,7 @@
         "name": "AdGuard DNS filter",
         "url": "https://gitea.amazehome.xyz/AMAZEHOME/hosts-and-filters/raw/branch/main/filter.txt",
         "enabled": true,
-        "lastUpdateTime": "2025-11-28T15:45:11.073Z"
+        "lastUpdateTime": "2025-11-28T16:13:03.564Z"
       },
       {
         "name": "Adaway Default Blocklist",
@@ -39,7 +39,7 @@
         "name": "My GitHub Rules",
         "url": "https://gitea.amazehome.xyz/AMAZEHOME/hosts-and-filters/raw/branch/main/rules/costomize.txt",
         "enabled": true,
-        "lastUpdateTime": "2025-11-28T14:42:09.271Z"
+        "lastUpdateTime": "2025-11-28T16:13:05.960Z"
       },
       {
         "name": "CNList",

shield/manager.go

@@ -374,12 +374,11 @@ func (m *ShieldManager) parseRule(line string, isLocal bool, source string) {
 		}
 
 	case strings.HasPrefix(line, "/") && strings.HasSuffix(line, "/"):
-		// 关键字匹配规则：/keyword/ 格式，不区分大小写，字面量匹配特殊字符
-		keyword := strings.TrimPrefix(strings.TrimSuffix(line, "/"), "/")
-		// 转义特殊字符，确保字面量匹配
-		quotedKeyword := regexp.QuoteMeta(keyword)
-		// 编译为不区分大小写的正则表达式，匹配域名中任意位置
-		if re, err := regexp.Compile("(?i)" + quotedKeyword); err == nil {
+		// 正则表达式匹配规则：/regex/ 格式，不区分大小写
+		pattern := strings.TrimPrefix(strings.TrimSuffix(line, "/"), "/")
+		// 编译为不区分大小写的正则表达式，确保能匹配域名中任意位置
+		// 对于像 /domain/ 这样的规则，应该匹配包含 domain 字符串的任何域名
+		if re, err := regexp.Compile("(?i).*" + regexp.QuoteMeta(pattern) + ".*"); err == nil {
 			// 保存原始规则字符串
 			m.addRegexRule(re, line, !isException, isLocal, source)
 		}