feat: blockchain rescan via daemon restart + status bar progress

- Fix z_importwallet to use full path instead of filename only
- Add rescanBlockchain() method that restarts daemon with -rescan flag
- Track rescan progress via daemon output parsing and getrescaninfo RPC
- Display rescan progress in status bar with animated indicator when starting
- Improve dark theme card contrast: lighter surface-variant, tinted borders, stronger rim-light

src/ui/windows/send_tab.cpp

@@ -668,20 +668,13 @@ void RenderSendConfirmPopup(App* app) {
 
     double total = s_amount + s_fee;
 
-    ImVec2 center = ImGui::GetMainViewport()->GetCenter();
-    ImGui::SetNextWindowPos(center, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
     float popupAvailW = ImGui::GetMainViewport()->Size.x * S.drawElement("tabs.send", "confirm-popup-width-ratio").size;
     float popupW = std::min(schema::UI().drawElement("tabs.send", "confirm-popup-max-width").size, popupAvailW);
     float popVs = Layout::vScale();
-    ImGui::SetNextWindowSize(ImVec2(popupW, 0), ImGuiCond_Always);
-    const auto& acrylicTheme = GetCurrentAcrylicTheme();
-    ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(Layout::spacingXl(), Layout::spacingLg()));
-    if (effects::ImGuiAcrylic::BeginAcrylicPopupModal(TR("confirm_send"), nullptr,
-        ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize, acrylicTheme.popup)) {
+    if (material::BeginOverlayDialog(TR("confirm_send"), nullptr, popupW, 0.94f)) {
 
         if (ImGui::IsKeyPressed(ImGuiKey_Escape) && !s_sending) {
             s_show_confirm = false;
-            ImGui::CloseCurrentPopup();
         }
 
         float popW = ImGui::GetContentRegionAvail().x;
@@ -825,21 +818,15 @@ void RenderSendConfirmPopup(App* app) {
                     }
                 );
                 s_show_confirm = false;
-                ImGui::CloseCurrentPopup();
             }
             ImGui::SameLine();
             if (TactileButton("Cancel", ImVec2(S.button("tabs.send", "cancel-button").width, std::max(schema::UI().drawElement("tabs.send", "confirm-btn-min-height").size, schema::UI().drawElement("tabs.send", "confirm-btn-base-height").size * popVs)), S.resolveFont(S.button("tabs.send", "cancel-button").font))) {
                 s_show_confirm = false;
-                ImGui::CloseCurrentPopup();
             }
         }
 
-        effects::ImGuiAcrylic::EndAcrylicPopup();
-    } else {
-        // BeginPopupModal returned false — popup was closed externally
-        s_show_confirm = false;
+        material::EndOverlayDialog();
     }
-    ImGui::PopStyleVar();
 }
 
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