feat(ui): float the remaining large dialogs (Phase 2 float rollout)

Per the user's selection, convert the large multi-section dialogs to the BlurFloat
style (floating content on the blur, plain heading, no glass card), each KEEPING
its authored width so width-coupled content is untouched:
- Export all keys, Console RPC reference, Explorer block detail
- Updater dialogs: daemon update, xmrig update, bootstrap download (multi-state)

Settings and Address book intentionally kept as cards (the modal Settings *window*
is dead code — show_settings_ is never set; the live Settings surface is the nav
page, not a modal; Address book has a nested edit that reads better contained).
All other confirm/input dialogs stay card-on-blur ("card for small"). Updater
dialogs are multi-state — GUI-check each state (confirm/progress/done/failed).

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

src/ui/windows/bootstrap_download_dialog.h

@@ -53,7 +53,10 @@ public:
         using namespace material;
         const float dp = Layout::dpiScale();
 
-        if (BeginOverlayDialog(TR("download_bootstrap"), &s_open, 500.0f, 0.94f)) {
+        OverlayDialogSpec ov;
+        ov.title = TR("download_bootstrap"); ov.p_open = &s_open;
+        ov.style = OverlayStyle::BlurFloat; ov.cardWidth = 500.0f; ov.cardBottomViewportRatio = 0.94f;
+        if (BeginOverlayDialog(ov)) {
 
             if (s_state == State::Confirm) {
                 renderConfirm(dp);

src/ui/windows/console_tab.cpp

@@ -1341,7 +1341,11 @@ void ConsoleTab::renderCommandsPopup()
     using namespace material;
     
     float popW = std::min(schema::UI().drawElement("tabs.console", "popup-max-width").size, ImGui::GetMainViewport()->Size.x * schema::UI().drawElement("tabs.console", "popup-width-ratio").size);
-    if (!material::BeginOverlayDialog(TR("console_rpc_reference"), &show_commands_popup_, popW, 0.94f)) {
+    material::OverlayDialogSpec ov;
+    ov.title = TR("console_rpc_reference"); ov.p_open = &show_commands_popup_;
+    ov.style = material::OverlayStyle::BlurFloat;   // floating content on the blur, plain heading
+    ov.cardWidth = popW; ov.cardBottomViewportRatio = 0.94f;   // keep authored width
+    if (!material::BeginOverlayDialog(ov)) {
         return;
     }
 

src/ui/windows/daemon_download_dialog.h

@@ -62,7 +62,10 @@ public:
         }
         using namespace material;
         const float dp = Layout::dpiScale();
-        if (BeginOverlayDialog(TR("daemon_update_title"), &s_open, 480.0f, 0.94f)) {
+        OverlayDialogSpec ov;
+        ov.title = TR("daemon_update_title"); ov.p_open = &s_open;
+        ov.style = OverlayStyle::BlurFloat; ov.cardWidth = 480.0f; ov.cardBottomViewportRatio = 0.94f;
+        if (BeginOverlayDialog(ov)) {
             const auto p = s_updater->getProgress();
             using St = util::DaemonUpdater::State;
             switch (p.state) {

src/ui/windows/explorer_tab.cpp

@@ -1024,7 +1024,11 @@ static void renderBlockDetailModal(App* app) {
         return;
     }
 
-    if (!BeginOverlayDialog(TR("explorer_block_detail"), &s_show_detail_modal, modalW, 0.90f))
+    OverlayDialogSpec ov;
+    ov.title = TR("explorer_block_detail"); ov.p_open = &s_show_detail_modal;
+    ov.style = OverlayStyle::BlurFloat;   // floating content on the blur, plain heading
+    ov.cardWidth = modalW; ov.cardBottomViewportRatio = 0.90f;   // keep authored width
+    if (!BeginOverlayDialog(ov))
         return;
 
     float contentW = ImGui::GetContentRegionAvail().x;

src/ui/windows/export_all_keys_dialog.cpp

@@ -69,7 +69,11 @@ void ExportAllKeysDialog::render(App* app)
     auto exportBtn = S.button("dialogs.export-all-keys", "export-button");
     auto closeBtn = S.button("dialogs.export-all-keys", "close-button");
 
-    if (material::BeginOverlayDialog(TR("export_keys_title"), &s_open, win.width, 0.94f)) {
+    material::OverlayDialogSpec ov;
+    ov.title = TR("export_keys_title"); ov.p_open = &s_open;
+    ov.style = material::OverlayStyle::BlurFloat;   // floating content on the blur, plain heading
+    ov.cardWidth = win.width; ov.cardBottomViewportRatio = 0.94f;   // keep authored width
+    if (material::BeginOverlayDialog(ov)) {
         // Warning
         ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(1.0f, 0.4f, 0.4f, 1.0f));
         ImGui::PushFont(material::Type().iconSmall());

src/ui/windows/xmrig_download_dialog.h

@@ -51,7 +51,10 @@ public:
         }
         using namespace material;
         const float dp = Layout::dpiScale();
-        if (BeginOverlayDialog(TR("xmrig_update_title"), &s_open, 480.0f, 0.94f)) {
+        OverlayDialogSpec ov;
+        ov.title = TR("xmrig_update_title"); ov.p_open = &s_open;
+        ov.style = OverlayStyle::BlurFloat; ov.cardWidth = 480.0f; ov.cardBottomViewportRatio = 0.94f;
+        if (BeginOverlayDialog(ov)) {
             const auto p = s_updater->getProgress();
             using St = util::XmrigUpdater::State;
             switch (p.state) {