feat(ui): migrate Explorer detail/loading + daemon-update prompt to reference design

Presentation-only reference-design migration:
- Explorer loading modal -> struct-form overlay (idSuffix explorerloading); block-
  detail modal loses its header divider; the search button + the prev/next nav
  become TactileButton; TR() the hardcoded "Previous block"/"Next block" tooltips,
  "TxID:", and the "shielded" output fallback (3 new explorer_* keys + reuse the
  existing `shielded` key), all 8 langs. Block-fetch RPC path untouched.
- Daemon-update startup prompt -> struct-form overlay (idSuffix daemonupdprompt),
  2 StyledButton -> TactileButton, drop the footer divider. The reinstall/
  prompted-size persistence logic is unchanged.

Build + ctest + hygiene clean; "DRGX" ticker left hardcoded per convention.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

res/lang/de.json

@@ -386,13 +386,16 @@
     "explorer_mempool": "Mempool",
     "explorer_mempool_size": "Größe",
     "explorer_mempool_txs": "Transaktionen",
+    "explorer_next_block": "Nächster Block",
     "explorer_no_results": "Keine passenden zwischengespeicherten Blöcke",
     "explorer_not_connected": "Nicht mit dem Daemon verbunden — Block- oder Transaktions-Hash kann nicht nachgeschlagen werden",
+    "explorer_prev_block": "Vorheriger Block",
     "explorer_recent_blocks": "Letzte Blöcke",
     "explorer_search": "Suchen",
     "explorer_section": "EXPLORER",
     "explorer_tx_outputs": "Ausgaben",
     "explorer_tx_size": "Größe",
+    "explorer_txid": "TxID:",
     "export": "Exportieren",
     "export_csv": "CSV exportieren",
     "export_keys_btn": "Schlüssel exportieren",

res/lang/es.json

@@ -386,13 +386,16 @@
     "explorer_mempool": "Mempool",
     "explorer_mempool_size": "Tamaño",
     "explorer_mempool_txs": "Transacciones",
+    "explorer_next_block": "Bloque siguiente",
     "explorer_no_results": "No hay bloques en caché que coincidan",
     "explorer_not_connected": "Sin conexión al daemon: no se puede buscar un bloque ni un hash de transacción",
+    "explorer_prev_block": "Bloque anterior",
     "explorer_recent_blocks": "Bloques Recientes",
     "explorer_search": "Buscar",
     "explorer_section": "EXPLORADOR",
     "explorer_tx_outputs": "Salidas",
     "explorer_tx_size": "Tamaño",
+    "explorer_txid": "TxID:",
     "export": "Exportar",
     "export_csv": "Exportar CSV",
     "export_keys_btn": "Exportar Claves",

res/lang/fr.json

@@ -386,13 +386,16 @@
     "explorer_mempool": "Mempool",
     "explorer_mempool_size": "Taille",
     "explorer_mempool_txs": "Transactions",
+    "explorer_next_block": "Bloc suivant",
     "explorer_no_results": "Aucun bloc en cache correspondant",
     "explorer_not_connected": "Non connecté au daemon — impossible de rechercher un hash de bloc ou de transaction",
+    "explorer_prev_block": "Bloc précédent",
     "explorer_recent_blocks": "Blocs récents",
     "explorer_search": "Rechercher",
     "explorer_section": "EXPLORATEUR",
     "explorer_tx_outputs": "Sorties",
     "explorer_tx_size": "Taille",
+    "explorer_txid": "TxID :",
     "export": "Exporter",
     "export_csv": "Exporter en CSV",
     "export_keys_btn": "Exporter les clés",

res/lang/ja.json

@@ -386,13 +386,16 @@
     "explorer_mempool": "メモリプール",
     "explorer_mempool_size": "サイズ",
     "explorer_mempool_txs": "トランザクション",
+    "explorer_next_block": "次のブロック",
     "explorer_no_results": "一致するキャッシュ済みブロックがありません",
     "explorer_not_connected": "デーモンに未接続 — ブロックまたはトランザクションハッシュを検索できません",
+    "explorer_prev_block": "前のブロック",
     "explorer_recent_blocks": "最近のブロック",
     "explorer_search": "検索",
     "explorer_section": "エクスプローラー",
     "explorer_tx_outputs": "出力",
     "explorer_tx_size": "サイズ",
+    "explorer_txid": "TxID：",
     "export": "エクスポート",
     "export_csv": "CSVエクスポート",
     "export_keys_btn": "鍵をエクスポート",

res/lang/ko.json

@@ -386,13 +386,16 @@
     "explorer_mempool": "멤풀",
     "explorer_mempool_size": "크기",
     "explorer_mempool_txs": "트랜잭션",
+    "explorer_next_block": "다음 블록",
     "explorer_no_results": "일치하는 캐시된 블록이 없습니다",
     "explorer_not_connected": "데몬에 연결되지 않음 — 블록 또는 트랜잭션 해시를 조회할 수 없습니다",
+    "explorer_prev_block": "이전 블록",
     "explorer_recent_blocks": "최근 블록",
     "explorer_search": "검색",
     "explorer_section": "탐색기",
     "explorer_tx_outputs": "출력",
     "explorer_tx_size": "크기",
+    "explorer_txid": "TxID:",
     "export": "내보내기",
     "export_csv": "CSV 내보내기",
     "export_keys_btn": "키 내보내기",

res/lang/pt.json

@@ -386,13 +386,16 @@
     "explorer_mempool": "Mempool",
     "explorer_mempool_size": "Tamanho",
     "explorer_mempool_txs": "Transações",
+    "explorer_next_block": "Próximo bloco",
     "explorer_no_results": "Nenhum bloco em cache correspondente",
     "explorer_not_connected": "Não conectado ao daemon — não é possível procurar um bloco ou hash de transação",
+    "explorer_prev_block": "Bloco anterior",
     "explorer_recent_blocks": "Blocos Recentes",
     "explorer_search": "Pesquisar",
     "explorer_section": "EXPLORADOR",
     "explorer_tx_outputs": "Saídas",
     "explorer_tx_size": "Tamanho",
+    "explorer_txid": "TxID:",
     "export": "Exportar",
     "export_csv": "Exportar CSV",
     "export_keys_btn": "Exportar Chaves",

res/lang/ru.json

@@ -386,13 +386,16 @@
     "explorer_mempool": "Мемпул",
     "explorer_mempool_size": "Размер",
     "explorer_mempool_txs": "Транзакции",
+    "explorer_next_block": "Следующий блок",
     "explorer_no_results": "Нет подходящих кэшированных блоков",
     "explorer_not_connected": "Нет подключения к демону — невозможно найти хеш блока или транзакции",
+    "explorer_prev_block": "Предыдущий блок",
     "explorer_recent_blocks": "Последние блоки",
     "explorer_search": "Поиск",
     "explorer_section": "ОБОЗРЕВАТЕЛЬ",
     "explorer_tx_outputs": "Выходы",
     "explorer_tx_size": "Размер",
+    "explorer_txid": "TxID:",
     "export": "Экспорт",
     "export_csv": "Экспорт в CSV",
     "export_keys_btn": "Экспорт ключей",

res/lang/zh.json

@@ -386,13 +386,16 @@
     "explorer_mempool": "内存池",
     "explorer_mempool_size": "大小",
     "explorer_mempool_txs": "交易",
+    "explorer_next_block": "下一个区块",
     "explorer_no_results": "没有匹配的缓存区块",
     "explorer_not_connected": "未连接到守护进程——无法查询区块或交易哈希",
+    "explorer_prev_block": "上一个区块",
     "explorer_recent_blocks": "最近区块",
     "explorer_search": "搜索",
     "explorer_section": "浏览器",
     "explorer_tx_outputs": "输出",
     "explorer_tx_size": "大小",
+    "explorer_txid": "TxID：",
     "export": "导出",
     "export_csv": "导出 CSV",
     "export_keys_btn": "导出密钥",

src/app.cpp

@@ -3368,7 +3368,11 @@ void App::maybeOfferDaemonUpdate()
 
 void App::renderDaemonUpdatePrompt()
 {
-    if (!ui::material::BeginOverlayDialog(TR("daemon_update_title"), &show_daemon_update_prompt_, 520.0f, 0.94f))
+    ui::material::OverlayDialogSpec ov;
+    ov.title = TR("daemon_update_title"); ov.p_open = &show_daemon_update_prompt_;
+    ov.style = ui::material::OverlayStyle::BlurFloat;
+    ov.cardWidth = 520.0f; ov.idSuffix = "daemonupdprompt";
+    if (!ui::material::BeginOverlayDialog(ov))
         return;
     const float dp = ui::Layout::dpiScale();
     ImGui::TextWrapped("%s", TR("daemon_update_body"));
@@ -3377,13 +3381,12 @@ void App::renderDaemonUpdatePrompt()
     ImGui::TextWrapped("%s", TR("daemon_update_safe"));
     ImGui::PopStyleColor();
     ImGui::Spacing();
-    ImGui::Separator();
+    if (ui::material::TactileButton(TR("daemon_update_now"), ImVec2(170 * dp, 0))) {
-    if (ui::material::StyledButton(TR("daemon_update_now"), ImVec2(170 * dp, 0))) {
         show_daemon_update_prompt_ = false;
         reinstallBundledDaemon();   // stops the node (managed or external), overwrites, restarts
     }
     ImGui::SameLine();
-    if (ui::material::StyledButton(TR("daemon_update_keep"), ImVec2(150 * dp, 0))) {
+    if (ui::material::TactileButton(TR("daemon_update_keep"), ImVec2(150 * dp, 0))) {
         show_daemon_update_prompt_ = false;
     }
     ui::material::EndOverlayDialog();

src/ui/windows/explorer_tab.cpp

@@ -483,7 +483,7 @@ static void renderSearchBar(App* app, float availWidth) {
 
     // Search button — same height as input
     ImGui::SetCursorScreenPos(ImVec2(ImGui::GetCursorScreenPos().x, cursorY));
-    bool clicked = material::StyledButton(TR("explorer_search"),
+    bool clicked = material::TactileButton(TR("explorer_search"),
         ImVec2(btnW, barH));
 
     std::string query(s_search_buf);
@@ -1012,7 +1012,11 @@ static void renderBlockDetailModal(App* app) {
 
     if (s_detail_loading && !s_show_detail_modal) {
         // Show a loading modal while fetching
-        if (BeginOverlayDialog(TR("loading"), &s_detail_loading, 300.0f, 0.85f)) {
+        OverlayDialogSpec lov;
+        lov.title = TR("loading"); lov.p_open = &s_detail_loading;
+        lov.style = OverlayStyle::BlurFloat;
+        lov.cardWidth = 300.0f; lov.idSuffix = "explorerloading";
+        if (BeginOverlayDialog(lov)) {
             ImGui::Spacing();
             char loadBuf[64];
             snprintf(loadBuf, sizeof(loadBuf), "%s%s", TR("loading"), material::LoadingDots());
@@ -1055,7 +1059,7 @@ static void renderBlockDetailModal(App* app) {
                 if (app->rpc() && app->rpc()->isConnected())
                     fetchBlockDetail(app, s_detail_height - 1);
             }
-            if (ImGui::IsItemHovered()) material::Tooltip("Previous block");
+            if (ImGui::IsItemHovered()) material::Tooltip("%s", TR("explorer_prev_block"));
             ImGui::PopID();
             ImGui::PopFont();
             ImGui::SameLine();
@@ -1069,7 +1073,7 @@ static void renderBlockDetailModal(App* app) {
                 if (app->rpc() && app->rpc()->isConnected())
                     fetchBlockDetail(app, s_detail_height + 1);
             }
-            if (ImGui::IsItemHovered()) material::Tooltip("Next block");
+            if (ImGui::IsItemHovered()) material::Tooltip("%s", TR("explorer_next_block"));
             ImGui::PopID();
             ImGui::PopFont();
         }
@@ -1077,7 +1081,6 @@ static void renderBlockDetailModal(App* app) {
         ImGui::EndDisabled();
     }
 
-    ImGui::Separator();
     ImGui::Spacing();
 
     // Show loading state inside the modal when navigating between blocks
@@ -1253,7 +1256,7 @@ static void renderBlockDetailModal(App* app) {
 
                     // Full TxID with copy
                     ImGui::PushFont(capFont);
-                    ImGui::TextColored(ImGui::ColorConvertU32ToFloat4(OnSurfaceMedium()), "TxID:");
+                    ImGui::TextColored(ImGui::ColorConvertU32ToFloat4(OnSurfaceMedium()), "%s", TR("explorer_txid"));
                     ImGui::PopFont();
                     ImGui::PushFont(body2);
                     ImGui::PushStyleColor(ImGuiCol_Text, ImGui::ColorConvertU32ToFloat4(linkCol));
@@ -1282,7 +1285,7 @@ static void renderBlockDetailModal(App* app) {
                         for (const auto& vout : s_tx_detail["vout"]) {
                             double val = vout.value("value", 0.0);
                             int n = vout.value("n", 0);
-                            std::string addr = "shielded";
+                            std::string addr = TR("shielded");
                             if (vout.contains("scriptPubKey") && vout["scriptPubKey"].contains("addresses") &&
                                 vout["scriptPubKey"]["addresses"].is_array() && !vout["scriptPubKey"]["addresses"].empty()) {
                                 addr = vout["scriptPubKey"]["addresses"][0].get<std::string>();

src/util/i18n.cpp

@@ -1937,6 +1937,9 @@ void I18n::loadBuiltinEnglish()
         strings_["explorer_block_merkle"] = "Merkle Root";
         strings_["explorer_tx_outputs"] = "Outputs";
         strings_["explorer_tx_size"] = "Size";
+        strings_["explorer_txid"] = "TxID:";
+        strings_["explorer_prev_block"] = "Previous block";
+        strings_["explorer_next_block"] = "Next block";
         strings_["explorer_invalid_query"] = "Enter a block height or 64-character hash";
         strings_["explorer_invalid_response"] = "Invalid response from daemon";
         strings_["explorer_hash_not_found"] = "No block or transaction found for this hash";