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/shield_dialog.cpp

@@ -11,8 +11,6 @@
 #include "../notifications.h"
 #include "../schema/ui_schema.h"
 #include "../material/draw_helpers.h"
-#include "../theme.h"
-#include "../effects/imgui_acrylic.h"
 #include "imgui.h"
 
 #include <vector>
@@ -81,14 +79,7 @@ void ShieldDialog::render(App* app)
         ? "Shield Coinbase Rewards" 
         : "Merge to Address";
 
-    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(title);
-    if (effects::ImGuiAcrylic::BeginAcrylicPopupModal(title, &s_open, ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoTitleBar, acrylicTheme.popup)) {
+    if (material::BeginOverlayDialog(title, &s_open, win.width, 0.94f)) {
         const auto& state = app->getWalletState();
         
         // Description
@@ -304,8 +295,8 @@ void ShieldDialog::render(App* app)
                 }
             }
         }
+        material::EndOverlayDialog();
     }
-    effects::ImGuiAcrylic::EndAcrylicPopup();
 }
 
 } // namespace ui