fix(host-detail): fix add-app modal not reopening after successful addition

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/client/host_detail.rs

@@ -39,6 +39,19 @@ fn AddAppModal(
     // Full Application structs so names are available in the selected tag list.
     let selected: RwSignal<Vec<Application>> = RwSignal::new(vec![]);
 
+    // Close the modal when the action transitions from in-flight → completed with Ok.
+    // Tracking the pending→false transition (rather than watching value directly) avoids
+    // closing the modal on mount when value still holds a previous session's Ok result.
+    Effect::new(move |was_pending: Option<bool>| {
+        let is_pending = add_action.pending().get();
+        if was_pending == Some(true) && !is_pending {
+            if let Some(Ok(_)) = add_action.value().get() {
+                show_modal.set(false);
+            }
+        }
+        is_pending
+    });
+
     view! {
         <div class="modal-backdrop" on:click=move |_| show_modal.set(false)>
             <div class="modal" on:click=move |e| e.stop_propagation()>
@@ -245,15 +258,6 @@ pub fn HostDetailPage() -> impl IntoView {
     let show_delete_modal  = RwSignal::new(false);
     let show_add_app_modal = RwSignal::new(false);
 
-    // Auto-close the add-app modal after a successful addition.
-    // Keeping this Effect in the parent avoids the re-trigger bug that would
-    // occur if the Effect were inside AddAppModal (it would fire on mount
-    // if the action already held a previous Ok value).
-    Effect::new(move |_| {
-        if let Some(Ok(_)) = add_app_action.value().get() {
-            show_add_app_modal.set(false);
-        }
-    });
 
     // LocalResource avoids reading the resource outside <Suspense> during hydration,
     // which would cause a mismatch between the SSR-rendered fallback and the content