fix(app-iced): 点选共享档立刻显示后果原文，登记在飞时不吃关闭（M223 自检）

两处自己复审抓到的问题：

1. 契约 §5.2 要求 Shared/VersionDir 被**点选**就展示 target_notes() 原文，而上一版要等
   用户再点一次「预检」才出现。现在点选这两档会顺手发一次**零写盘**的预检，结果落在
   Pick 段当提示读（不把用户甩到确认页：确认仍由显式的「预检」按钮触发，Form::checked）。
   改档之后旧 plan 因目标档不一致而不再显示（Form::fresh_plan），避免画上一档的后果原文。
2. 「关闭」在登记在飞时被忽略：core 那条线程已经开跑，关面板会让 Done 事件被代次丢掉，
   用户看到的就是「实例写进去了，界面什么都没说」。

用例：a_foreign_target_shows_its_notes_without_jumping_to_confirm /
choosing_a_foreign_target_previews_but_waits_for_the_user /
closing_is_ignored_while_the_registration_is_in_flight。

crates/app-iced/src/app/adopt.rs

@@ -48,7 +48,9 @@ use unlucky_design::shape::ShapeScale;
 use unlucky_design::spacing::Space as Sp;
 use unlucky_design::typography::TypeRole;
 use unlucky_i18n::{Catalog, Key, Lang};
-use unlucky_presenter::dto::{AdoptCandidateView, AdoptStage, AdoptState, AdoptTargetView};
+use unlucky_presenter::dto::{
+    AdoptCandidateView, AdoptPlanView, AdoptStage, AdoptState, AdoptTargetView,
+};
 
 use crate::app::components::buttons::{self, Button};
 use crate::app::components::feedback::dialog::scrim;
@@ -102,6 +104,13 @@ pub struct Form {
     pub target: AdoptTargetView,
     /// 在等在飞的那一条命令
     pub busy: Busy,
+    /// 用户已经点过「预检」（没点过就留在 Pick 段，哪怕后台已经顺手算过一次落点）。
+    ///
+    /// 为什么要有这一位：共享档 / 版本目录档一旦被点选，界面就要立刻显示 `target_notes()` 的
+    /// **后果原文**（契约 §5.2）——那是 core 唯一会产出这段文字的地方，所以点选时顺手发一次
+    /// **零写盘**的预检。但那一次结果不该把用户甩到「可以导入」的确认页：确认必须由显式的
+    /// `Check` 触发。于是 `checked` 记住「这次预检是不是用户要的」。
+    pub checked: bool,
 }
 
 impl Form {
@@ -124,6 +133,30 @@ impl Form {
         self.busy = Busy::Idle;
     }
 
+    /// 当前该画哪一段：`Preview` 只在用户**点过预检**之后才算数，其余按 `AdoptState::stage()`。
+    ///
+    /// 这条收窄是为了「点选共享档 ⇒ 立刻看到后果原文」而不把用户直接甩到确认页：
+    /// 自动预检的结果落在 Pick 段里当**提示**读，用户点「预检」之后才进确认段。
+    #[must_use]
+    pub fn stage(&self, adopt_state: &AdoptState) -> AdoptStage {
+        match adopt_state.stage() {
+            AdoptStage::Preview if !self.checked => AdoptStage::Pick,
+            other => other,
+        }
+    }
+
+    /// 后台算出来、且**对得上当前选择**的预检（对不上 = 上一档的过期结果，一律不画）。
+    ///
+    /// 判据是「目标档一致」：用户改了目标档之后，旧 plan 的 `notes` 说的是别的目录，
+    /// 拿它当后果原文就是撒谎。版本一致性由 [`Self::candidate`] 那一路保证（选中即重扫）。
+    #[must_use]
+    pub fn fresh_plan<'a>(&self, adopt_state: &'a AdoptState) -> Option<&'a AdoptPlanView> {
+        adopt_state
+            .plan
+            .as_ref()
+            .filter(|plan| plan.target == self.target)
+    }
+
     /// 当前选中的候选（选中项已不在列表里时返回 `None`，界面自动退回「请选择」）。
     #[must_use]
     pub fn candidate<'a>(&self, adopt_state: &'a AdoptState) -> Option<&'a AdoptCandidateView> {
@@ -206,24 +239,25 @@ fn card<'a>(
     adopt_state: &'a AdoptState,
     catalog: Catalog,
 ) -> Element<'a, Message> {
+    let stage = form.stage(adopt_state);
     let body = column![
         frame::text_role(
             ui,
             TypeRole::HeadlineSmall,
             true,
-            title_text(adopt_state, catalog),
+            title_text(stage, catalog),
             ui.color(Role::OnSurface),
         )
         .map(Message::Page),
         wrapped(
             ui,
-            subtitle(adopt_state, catalog),
+            subtitle(stage, adopt_state, catalog),
             ui.color(Role::OnSurfaceVariant)
         ),
         frame::divider(ui).map(Message::Page),
-        middle(ui, form, adopt_state, catalog),
+        middle(ui, form, adopt_state, stage, catalog),
         frame::divider(ui).map(Message::Page),
-        footer(ui, form, adopt_state, catalog),
+        footer(ui, form, adopt_state, stage, catalog),
     ]
     .spacing(ui.space(Sp::X3))
     .width(Length::Fill);
@@ -241,8 +275,8 @@ fn card<'a>(
 }
 
 /// 段标题（四段各一句）。
-fn title_text(adopt_state: &AdoptState, catalog: Catalog) -> &'static str {
-    match adopt_state.stage() {
+fn title_text(stage: AdoptStage, catalog: Catalog) -> &'static str {
+    match stage {
         AdoptStage::Pick => catalog.text(Key::AdoptTitle),
         AdoptStage::Preview => catalog.text(Key::AdoptPlanTitle),
         AdoptStage::Failed => catalog.text(Key::AdoptFailureTitle),
@@ -251,8 +285,8 @@ fn title_text(adopt_state: &AdoptState, catalog: Catalog) -> &'static str {
 }
 
 /// 标题下那句说明（Pick 段说清「什么都不复制」；Done 段说清「去实例列表启动」）。
-fn subtitle(adopt_state: &AdoptState, catalog: Catalog) -> String {
-    match adopt_state.stage() {
+fn subtitle(stage: AdoptStage, adopt_state: &AdoptState, catalog: Catalog) -> String {
+    match stage {
         AdoptStage::Pick => catalog.text(Key::AdoptSubtitle).to_string(),
         AdoptStage::Preview => adopt_state
             .plan
@@ -279,11 +313,18 @@ fn middle<'a>(
     ui: &'a Ui,
     form: &'a Form,
     adopt_state: &'a AdoptState,
+    stage: AdoptStage,
     catalog: Catalog,
 ) -> Element<'a, Message> {
-    match adopt_state.stage() {
-        AdoptStage::Pick => pick::pick(ui, form, adopt_state.scan.as_ref(), catalog),
-        AdoptStage::Preview => panes::preview(ui, adopt_state.plan.as_ref(), catalog),
+    match stage {
+        AdoptStage::Pick => pick::pick(
+            ui,
+            form,
+            adopt_state.scan.as_ref(),
+            form.fresh_plan(adopt_state),
+            catalog,
+        ),
+        AdoptStage::Preview => panes::preview(ui, form.fresh_plan(adopt_state), catalog),
         AdoptStage::Failed => panes::failed(ui, adopt_state.failure.as_ref(), catalog),
         AdoptStage::Done => panes::done(ui, adopt_state.done.as_ref(), catalog),
     }
@@ -294,9 +335,9 @@ fn footer<'a>(
     ui: &'a Ui,
     form: &'a Form,
     adopt_state: &'a AdoptState,
+    stage: AdoptStage,
     catalog: Catalog,
 ) -> Element<'a, Message> {
-    let stage = adopt_state.stage();
     let busy = form.busy.waiting();
 
     let primary: Element<'a, Message> = match stage {