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/export_transactions_dialog.cpp

@@ -10,7 +10,6 @@
 #include "../schema/ui_schema.h"
 #include "../material/draw_helpers.h"
 #include "../theme.h"
-#include "../effects/imgui_acrylic.h"
 #include "imgui.h"
 
 #include <string>
@@ -73,14 +72,7 @@ void ExportTransactionsDialog::render(App* app)
     auto exportBtn = S.button("dialogs.export-transactions", "export-button");
     auto closeBtn = S.button("dialogs.export-transactions", "close-button");
 
-    ImGui::SetNextWindowSize(ImVec2(win.width, win.height), ImGuiCond_FirstUseEver);
-    ImVec2 center = ImGui::GetMainViewport()->GetCenter();
-    ImGui::SetNextWindowPos(center, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
-    ImGui::SetNextWindowFocus();
-
-    const auto& acrylicTheme = GetCurrentAcrylicTheme();
-    ImGui::OpenPopup("Export Transactions to CSV");
-    if (effects::ImGuiAcrylic::BeginAcrylicPopupModal("Export Transactions to CSV", &s_open, ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoTitleBar, acrylicTheme.popup)) {
+    if (material::BeginOverlayDialog("Export Transactions to CSV", &s_open, win.width, 0.94f)) {
         const auto& state = app->getWalletState();
         
         ImGui::Text("Export %zu transactions to CSV file.", state.transactions.size());
@@ -165,8 +157,8 @@ void ExportTransactionsDialog::render(App* app)
             ImGui::Spacing();
             ImGui::TextWrapped("%s", s_status.c_str());
         }
+        material::EndOverlayDialog();
     }
-    effects::ImGuiAcrylic::EndAcrylicPopup();
 }
 
 } // namespace ui