feat(auth): add silent OIDC sign-in (#799)

src/ui/locales/en.json

@@ -1226,6 +1226,7 @@
     "failedCompleteReset": "Failed to complete password reset",
     "invalidTotpCode": "Invalid TOTP code",
     "failedOidcLogin": "Failed to start OIDC login",
+    "silentSigninOidcUnavailable": "Silent sign-in was requested, but OIDC login is not available.",
     "failedUserInfo": "Failed to get user info after login",
     "oidcAuthFailed": "OIDC authentication failed",
     "invalidAuthUrl": "Invalid authorization URL received from backend",

src/ui/locales/translated/zh_CN.json

@@ -2336,6 +2336,7 @@
     "failedCompleteReset": "密码重置失败",
     "invalidTotpCode": "无效的 TOTP 代码",
     "failedOidcLogin": "OIDC 登录启动失败",
+    "silentSigninOidcUnavailable": "已请求静默登录，但当前未启用 OIDC 登录。",
     "failedUserInfo": "登录后无法获取用户信息",
     "oidcAuthFailed": "OIDC 身份验证失败",
     "noTokenReceived": "登录未收到令牌",