release: v1.2.2 — 双域名配置与 Host 隔离修复

修复设置页误清空管理域、配置与生效 URL 混淆及第三 Host 绕过隔离；加固 Settings API 与中间件，并更新文档站。

i18n/locales/en.json

@@ -198,8 +198,15 @@
     "imageBaseUrlSingleHint": "No trailing slash; leave empty to use the current request host; single-domain setups do not need a site URL",
     "imageBaseUrlPlaceholder": "https://pic.example.com",
     "imageBaseUrlActive": "Active: {url}",
-    "hideFolderInUrl": "Hide folder in image URLs",
-    "hideFolderInUrlHint": "Links become /file.webp without folder or date paths; legacy full paths still work. Identical filenames under different subpaths may collide on short URLs",
+    "runtimeDetected": "Detected current access: {url} (will not be saved automatically)",
+    "fillDetectedOrigin": "Use detected URL",
+    "hostRoleUnknown": "Current Host does not match configured domains; reverse-proxy bypass may be possible",
+    "disableDomainSeparationTitle": "Disable domain separation",
+    "disableDomainSeparationDesc": "This clears the site URL and keeps only the image URL. Continue?",
+    "disableDomainSeparationConfirm": "Disable",
+    "domainSeparationRequired": "Both site and image URLs are required when domain separation is enabled",
+    "hideFolderInUrl": "Use short image links",
+    "hideFolderInUrlHint": "When on, links are only domain + filename, e.g. img.example.com/abc.webp. When off, date or custom folders are kept, e.g. img.example.com/2026/08/abc.webp",
     "storageUseDatePath": "Group uploads by year/month",
     "storageUseDatePathHint": "When enabled, files are stored as images/2026/08/file.webp; when disabled, as images/file.webp. Applies only to new uploads after enabling",
     "badgeEnv": ".env",

i18n/locales/zh-CN.json

@@ -198,8 +198,15 @@
     "imageBaseUrlSingleHint": "末尾不加 /；留空则使用当前访问域名；单域名部署无需填写网站域名",
     "imageBaseUrlPlaceholder": "https://pic.example.com",
     "imageBaseUrlActive": "当前生效：{url}",
-    "hideFolderInUrl": "隐藏直链目录前缀",
-    "hideFolderInUrlHint": "开启后直链为 /xxx.webp，不含 images/ 或日期路径；旧完整路径仍可用。子路径下若存在同名文件，短链可能冲突",
+    "runtimeDetected": "检测到当前访问：{url}（不会自动写入配置）",
+    "fillDetectedOrigin": "填入检测地址",
+    "hostRoleUnknown": "当前访问 Host 与配置不一致，可能存在反代绕过风险",
+    "disableDomainSeparationTitle": "关闭域名分离",
+    "disableDomainSeparationDesc": "将清除管理域名配置，仅保留图片域名。确定继续？",
+    "disableDomainSeparationConfirm": "确认关闭",
+    "domainSeparationRequired": "启用域名分离时需同时填写网站域名与图片域名",
+    "hideFolderInUrl": "使用简短图片链接",
+    "hideFolderInUrlHint": "开启后链接仅含域名与文件名，例如 img.example.com/abc.webp；关闭后保留日期或自定义目录，例如 img.example.com/2026/08/abc.webp",
     "storageUseDatePath": "上传目录按年/月分组",
     "storageUseDatePathHint": "开启后保存为 images/2026/08/xxx.webp；关闭则为 images/xxx.webp。仅影响启用后的新上传",
     "badgeEnv": ".env",