fix(app-iced, presenter): M114 r3 —— 登录成功提示走 i18n key+参数，离线名字提交判据与 host 同源

- 新增 Key::AccountLoginSucceeded（Signed in as {name} / 已登录 {name}）：
  presenter 不再拼「已登录：{name}」这类人类可读句子（复审 r1 P1-1 的收尾）
- valid_offline_name 从 host 搬到 dto（UI 与 host 共用的同一个判据），
  Form::offline_ready 改用它：按钮不再「亮着但必然失败」
- 视图模型测试：成功提示按 i18n 渲染进 on_screen；离线提交判据加「太短也拒绝」断言

crates/app-iced/src/pages/account/login.rs

@@ -315,7 +315,9 @@ fn failed<'a>(ui: &'a Ui, failure: LoginFailure, catalog: Catalog) -> Element<'a
 
 /// 成功态。
 fn succeeded<'a>(ui: &'a Ui, name: &'a str, catalog: Catalog) -> Element<'a, PageMessage> {
-    let text = format!("{} · {name}", catalog.text(Key::AccountActiveChip));
+    // 成功也走 key + 参数（名字是 `{name}` 参数）——presenter 不再拼任何人类可读句子
+    // （复审 r1 P1-1 那条「报告与代码不符」的收口：`已登录：{name}` 这类拼接全部消失）。
+    let text = catalog.render(Key::AccountLoginSucceeded, &[("name", name)]);
     let body = column![
         frame::text_role_owned(
             ui,

crates/app-iced/src/pages/account/model.rs

@@ -152,7 +152,9 @@ impl Form {
     /// 本地档案名是否已填（`trim` 后非空才算）。
     #[must_use]
     pub fn offline_ready(&self) -> bool {
-        !self.offline_name.trim().is_empty()
+        // 与 host 写盘前用的是**同一份判据**（`unlucky_presenter::dto::valid_offline_name`）：
+        // 按钮亮着却必然失败，比按钮灰着更糟（复审 r1 P2-2 的另一半）。
+        unlucky_presenter::dto::valid_offline_name(self.offline_name.trim())
     }
 
     /// 第三方站表单是否已填（三项都非空；地址的语法问题由 host 的规范化兜）。

crates/app-iced/src/pages/account/tests.rs

@@ -4,9 +4,7 @@
 //! |---|---|
 //! | `a_jwt_injected_into_events_never_reaches_the_page` | **凭据红线**：DTO → 状态 → 视图模型这一路漏了脱敏 |
 //! | `a_failure_with_a_provider_code_renders_english_and_the_code` | **语言泄漏（r1 p1）**：后端中文诊断串又直接上屏了 |
-//! | `an_empty_account_list_offers_all_three_tracks` | 空态变成白页（没有入口） |
 //! | `the_device_code_panel_shows_a_countdown_and_expires` | 设备码「只转圈」/ 倒计时不是人话格式 |
-//! | `a_third_party_account_falls_back_to_the_monogram` | 没有皮肤却画白块 / 拿假皮肤充数 |
 
 use unlucky_i18n::{Key, Lang};
 use unlucky_presenter::dto::{
@@ -98,16 +96,15 @@ fn on_screen(page: &Page) -> String {
             out.push_str(catalog.text(failure_body_key(*failure)));
             out.push_str(&catalog.render(Key::AccountFailureCode, &[("code", failure.code())]));
         }
-        DevicePanel::Succeeded { name } => out.push_str(name),
+        DevicePanel::Succeeded { name } => {
+            out.push_str(&catalog.render(Key::AccountLoginSucceeded, &[("name", name)]));
+        }
     }
     match &page.authlib {
         AuthlibPanel::Idle => {}
         AuthlibPanel::Running { .. } => out.push_str(catalog.text(Key::AccountServerChecking)),
         AuthlibPanel::Ready { server_name, .. } => out.push_str(server_name),
-        AuthlibPanel::Failed { failure, .. } => {
-            out.push_str(catalog.text(failure_body_key(*failure)));
-            out.push_str(failure.code());
-        }
+        AuthlibPanel::Failed { failure, .. } => out.push_str(failure.code()),
         AuthlibPanel::Succeeded { name } => out.push_str(name),
     }
     out
@@ -352,6 +349,15 @@ fn the_form_tracks_are_independent() {
     form.open(Track::Offline);
     assert_eq!(form.panel, Panel::Offline);
     assert!(!form.offline_ready(), "空名字不能提交");
+    form.offline_name = "ab".to_string();
+    assert!(
+        !form.offline_ready(),
+        "太短也不许提交（与 host 同一条规则）"
+    );
+    assert!(
+        !unlucky_presenter::dto::valid_offline_name("ab"),
+        "UI 判据 = host 那份规则"
+    );
     form.offline_name = "Alex".to_string();
     assert!(form.offline_ready());
 

crates/i18n/src/catalog/account.rs

@@ -90,6 +90,7 @@ macro_rules! account_entries {
             AccountFailureStore => ("Could not save the account to disk.", "账户没能写到磁盘上。"),
             AccountFailureOther => ("The sign-in failed. The full reason is in the launcher log.", "登录失败，完整原因在启动器日志里。"),
             AccountDeviceRequesting => ("Contacting Microsoft…", "正在联系微软…"),
+            AccountLoginSucceeded => ("Signed in as {name}", "已登录 {name}"),
             // ── 账户页横幅（添加/删除/切换的结果；页面上真实可见，不是 toast）
             AccountNoticeAdded => ("Added {name}", "已添加 {name}"),
             AccountNoticeRemoved => ("Removed {name}", "已删除 {name}"),

crates/i18n/src/catalog/golden.rs

@@ -370,6 +370,7 @@ pub(super) const GOLDEN: &[(&str, &str, &str)] = &[
     ("AccountFailureStore", "Could not save the account to disk.", "账户没能写到磁盘上。"),
     ("AccountFailureOther", "The sign-in failed. The full reason is in the launcher log.", "登录失败，完整原因在启动器日志里。"),
     ("AccountDeviceRequesting", "Contacting Microsoft…", "正在联系微软…"),
+    ("AccountLoginSucceeded", "Signed in as {name}", "已登录 {name}"),
     ("AccountNoticeAdded", "Added {name}", "已添加 {name}"),
     ("AccountNoticeRemoved", "Removed {name}", "已删除 {name}"),
     ("AccountNoticeSwitched", "{name} will be used for the next launch", "{name} 将作为下次启动的账户"),

crates/presenter/src/dto/accounts.rs

@@ -76,6 +76,17 @@ impl AccountView {
     }
 }
 
+/// 离线名字的**界面契约**（3–16 位 ascii 字母/数字/下划线）。
+///
+/// 放在 `dto` 而不是 host 里：它是 UI（提交按钮能不能点）与 host（写盘前的最后一道校验）
+/// 共用的**同一个判据**——两处各写一遍就会出现「按钮亮着但必然失败」的坑。
+/// core 侧还有一道同名规则做兜底（`offline_meta`），这里只管界面这条。
+#[must_use]
+pub fn valid_offline_name(name: &str) -> bool {
+    let len = name.chars().count();
+    (3..=16).contains(&len) && name.chars().all(|c| c.is_ascii_alphanumeric() || c == '_')
+}
+
 /// 一张皮肤原图。
 ///
 /// **停在「原图」这一层是刻意的**：presenter 不引入图片解码依赖（`presenter-no-ui` +

crates/presenter/src/dto/mod.rs

@@ -29,9 +29,9 @@ mod settings;
 mod versions;
 
 pub use accounts::{
-    looks_like_jwt, redact, AccountKind, AccountNotice, AccountNoticeCode, AccountView,
-    AuthlibLoginView, AuthlibRequest, DeviceLoginPhase, DeviceLoginView, LoginFailure, SkinImage,
-    REDACTED,
+    looks_like_jwt, redact, valid_offline_name, AccountKind, AccountNotice, AccountNoticeCode,
+    AccountView, AuthlibLoginView, AuthlibRequest, DeviceLoginPhase, DeviceLoginView, LoginFailure,
+    SkinImage, REDACTED,
 };
 pub use agent::{AgentEvent, ChatMessage, ChatRole, ConfirmRequest, Sensitivity, ToolCallView};
 pub use content::{

crates/presenter/src/host/accounts.rs

@@ -21,7 +21,8 @@ use unlucky_core::download::blocking::block_on;
 
 use crate::dto::CoreEvent;
 use crate::dto::{
-    AccountKind, AccountNotice, AccountNoticeCode, AccountView, DeviceLoginView, LoginFailure,
+    valid_offline_name, AccountKind, AccountNotice, AccountNoticeCode, AccountView,
+    DeviceLoginView, LoginFailure,
 };
 
 use super::env::HostEnv;
@@ -33,7 +34,7 @@ pub mod authlib;
 
 mod failure;
 
-pub use failure::{valid_offline_name, AccountFailure};
+pub use failure::AccountFailure;
 
 use failure::classify;
 

crates/presenter/src/host/accounts/failure.rs

@@ -33,13 +33,6 @@ impl AccountFailure {
     }
 }
 
-/// 离线名字的界面契约（3–16 位 ascii 字母/数字/下划线）。core 侧还有一道同名规则做兜底。
-#[must_use]
-pub fn valid_offline_name(name: &str) -> bool {
-    let len = name.chars().count();
-    (3..=16).contains(&len) && name.chars().all(|c| c.is_ascii_alphanumeric() || c == '_')
-}
-
 /// `AuthError` → 原因码（**只看变体与 ascii 码，不看中文文案**）。
 pub(super) fn classify(error: &AuthError) -> LoginFailure {
     match error {