feat(hosts): add delete confirmation modal on hosts list page

Replace the direct dispatch on the Delete button with a pending_delete
signal (id + name). A DeleteHostModal identical to the one in host detail
opens for confirmation before the action is dispatched. The modal closes
automatically after a successful deletion.

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

src/client/hosts.rs

@@ -27,6 +27,47 @@ const PER_PAGE_OPTIONS: &[(i64, &str)] = &[
     (0,   "All"),
 ];
 
+// ─── Delete host modal ────────────────────────────────────────────────────────
+
+#[component]
+fn DeleteHostModal(
+    host_name: String,
+    host_id: i64,
+    delete_action: ServerAction<DeleteHost>,
+    pending_delete: RwSignal<Option<(i64, String)>>,
+) -> impl IntoView {
+    view! {
+        <div class="modal-backdrop" on:click=move |_| pending_delete.set(None)>
+            <div class="modal" on:click=move |e| e.stop_propagation()>
+                <div class="modal__header">
+                    <h2>"Delete host"</h2>
+                    <button class="modal__close" type="button" aria-label="Close"
+                        on:click=move |_| pending_delete.set(None)>
+                        "×"
+                    </button>
+                </div>
+                <div class="modal__body">
+                    <p class="warning">
+                        "Are you sure you want to delete "
+                        <strong>{host_name}</strong>
+                        "? All port associations will also be removed."
+                    </p>
+                </div>
+                <div class="modal__actions">
+                    <button class="btn-secondary" type="button"
+                        on:click=move |_| pending_delete.set(None)>
+                        "Cancel"
+                    </button>
+                    <button class="btn-danger" type="button"
+                        on:click=move |_| { delete_action.dispatch(DeleteHost { id: host_id }); }>
+                        "Delete"
+                    </button>
+                </div>
+            </div>
+        </div>
+    }.into_any()
+}
+
 // ─── Add host modal ───────────────────────────────────────────────────────────
 
 #[component]
@@ -247,7 +288,7 @@ fn PaginationBar(
 #[component]
 fn HostTable(
     hosts: Resource<Result<HostsPageData, ServerFnError>>,
-    delete_action: ServerAction<DeleteHost>,
+    pending_delete: RwSignal<Option<(i64, String)>>,
 ) -> impl IntoView {
     view! {
         <Suspense fallback=|| view! { <p class="empty">"Loading hosts…"</p> }>
@@ -276,6 +317,7 @@ fn HostTable(
                             <tbody>
                                 {rows.into_iter().map(|host| {
                                     let id = host.id;
+                                    let delete_name = host.name.clone();
                                     view! {
                                         <tr>
                                             <td>
@@ -293,7 +335,7 @@ fn HostTable(
                                             <td class="col-count">{host.application_count}</td>
                                             <td class="col-actions">
                                                 <button on:click=move |_| {
-                                                    delete_action.dispatch(DeleteHost { id });
+                                                    pending_delete.set(Some((id, delete_name.clone())));
                                                 }>
                                                     "Delete"
                                                 </button>
@@ -319,6 +361,16 @@ pub fn HostsPage() -> impl IntoView {
 
     let show_modal = RwSignal::new(false);
 
+    // None = no modal, Some((id, name)) = delete confirmation open.
+    let pending_delete: RwSignal<Option<(i64, String)>> = RwSignal::new(None);
+
+    // Close the delete modal automatically after a successful deletion.
+    Effect::new(move |_| {
+        if let Some(Ok(_)) = delete_action.value().get() {
+            pending_delete.set(None);
+        }
+    });
+
     // Filter signals ("" / 0 = no filter)
     let name_filter       = RwSignal::new(String::new());
     let network_id_filter = RwSignal::new(0i64);
@@ -369,6 +421,15 @@ pub fn HostsPage() -> impl IntoView {
                 />
             })}
 
+            {move || pending_delete.get().map(|(host_id, host_name)| view! {
+                <DeleteHostModal
+                    host_name=host_name
+                    host_id=host_id
+                    delete_action=delete_action
+                    pending_delete=pending_delete
+                />
+            })}
+
             <FilterBar
                 networks_res=networks_res
                 applications_res=applications_res
@@ -387,7 +448,7 @@ pub fn HostsPage() -> impl IntoView {
 
                 <PaginationBar total=total page=page per_page=per_page total_pages=total_pages/>
 
-                <HostTable hosts=hosts delete_action=delete_action/>
+                <HostTable hosts=hosts pending_delete=pending_delete/>
             </section>
         </div>
     }.into_any()