feat(cloudflare): add custom targets and node failover (#43)

* feat(cloudflare): add custom targets and node failover

* fix(cloudflare): propagate batch sync errors

---------

Co-authored-by: OpenAI Codex <codex@openai.com>

frontend/messages/fragments/security.zh-CN.json

@@ -772,10 +772,10 @@
     "notReadyDesc": "请先导入现有 Cloudflare DNS 账号，或录入独立 API Token 并完成连接测试。",
     "configure": "配置连接",
     "groupsTitle": "指向分组",
-    "groupsDesc": "管理 Cloudflare A 记录对应的节点与域名成员。",
+    "groupsDesc": "管理 Cloudflare DNS 记录的指向方式与域名成员。",
     "loadingGroups": "加载指向分组中...",
     "emptyTitle": "暂无指向分组",
-    "emptyDesc": "创建分组后，可将域名成员同步到指定的边缘节点。",
+    "emptyDesc": "创建分组后，可将域名成员绑定到边缘节点，或同步到自定义 DNS 目标。",
     "enabled": "已启用",
     "disabled": "已停用",
     "memberSummary": "成员 {count} 个 · 新成员默认{proxy}橙云",
@@ -788,7 +788,7 @@
     "syncQueued": "分组同步任务已入队",
     "deleted": "指向分组及远端记录已删除",
     "deleteTitle": "删除指向分组",
-    "deleteDesc": "将删除 {name} 的全部成员及本模块管理的远端 A 记录。此操作不可撤销。",
+    "deleteDesc": "将删除 {name} 的全部成员及本模块管理的远端 DNS 记录。此操作不可撤销。",
     "confirmDelete": "确认删除",
     "loadingDetail": "加载分组详情中...",
     "groupUpdated": "分组配置已更新",
@@ -798,13 +798,18 @@
     "memberPartial": "部分成功：{succeeded} 个已加入，{failed} 个失败",
     "proxyUpdated": "橙云设置已更新并排队同步",
     "memberSyncQueued": "成员同步任务已入队",
-    "memberDeleted": "成员及远端 A 记录已删除",
+    "memberDeleted": "成员及远端 DNS 记录已删除",
+    "batchEnableProxy": "批量开启橙云",
+    "batchProxyEnabled": "已为 {count} 个成员开启橙云并排队同步",
     "back": "返回列表",
     "refresh": "刷新",
     "edit": "编辑",
     "addDomain": "添加域名",
     "currentPoint": "当前指向",
     "activeNode": "生效节点 {name} · {ip}",
+    "customTargetSummary": "自定义目标 {type} · {content}",
+    "nodeTargetMode": "绑定节点",
+    "customTargetMode": "自定义记录",
     "syncEnabled": "同步已启用",
     "syncDisabled": "同步已停用",
     "primaryNode": "主节点 {name}",
@@ -815,7 +820,7 @@
     "noMembers": "暂无域名成员。",
     "columns": {
       "domain": "域名",
-      "desiredIp": "期望 IP",
+      "desiredIp": "期望值",
       "status": "状态",
       "proxied": "橙云",
       "actions": "操作"
@@ -825,8 +830,19 @@
     "groupDialog": {
       "editTitle": "编辑指向分组",
       "createTitle": "新增指向分组",
-      "description": "一期使用主节点作为生效节点；备用节点仅保存，不会自动切换。",
+      "description": "选择绑定边缘节点，或为成员统一指定自定义 DNS 记录目标。",
       "name": "分组名称",
+      "targetMode": "指向方式",
+      "bindNode": "绑定节点",
+      "customTarget": "自定义",
+      "recordType": "记录类型",
+      "recordContent": "记录值",
+      "recordContentHint": "A 填 IPv4，AAAA 填 IPv6，CNAME 填目标域名。",
+      "recordContentPlaceholder": {
+        "CNAME": "例如：origin.example.com",
+        "A": "例如：203.0.113.10",
+        "AAAA": "例如：2001:db8::10"
+      },
       "primary": "主节点",
       "primaryPlaceholder": "选择带 IPv4 的边缘节点",
       "noIp": "未配置 IP",
@@ -838,7 +854,7 @@
     },
     "memberDialog": {
       "title": "添加域名成员",
-      "description": "支持搜索筛选与批量勾选；加入后会创建或接管唯一同名 A 记录，多条同名 A 会拒绝同步。",
+      "description": "支持搜索筛选与批量勾选；加入后会创建或接管当前分组指向所用的唯一同名 DNS 记录。",
       "zoneDomain": "Zone 域名",
       "searchPlaceholder": "搜索域名或顶级域…",
       "selected": "已选 {count}",