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/material/draw_helpers.h

@@ -15,6 +15,7 @@
 #include "../effects/imgui_acrylic.h"
 #include "../theme.h"
 #include "../../util/noise_texture.h"
+#include "../../embedded/IconsMaterialDesign.h"
 #include "imgui.h"
 #include "imgui_internal.h"
 #include <algorithm>
@@ -774,6 +775,171 @@ inline void ApplySmoothScroll(float speed = 12.0f)
     ImGui::SetScrollY(s.current);
 }
 
+// ============================================================================
+// Dialog Title Bar with Close Button
+// ============================================================================
+// Draws a custom title bar for modal popups with a title and close button.
+// Returns true if the close button was clicked.
+
+inline bool DrawDialogTitleBar(const char* title, bool* p_open, ImU32 accent_col = 0)
+{
+    bool closeClicked = false;
+    ImDrawList* dl = ImGui::GetWindowDrawList();
+    ImVec2 winPos = ImGui::GetWindowPos();
+    float winWidth = ImGui::GetWindowWidth();
+    float barHeight = 36.0f;
+    
+    // Get accent color from theme if not provided
+    if (!accent_col) {
+        accent_col = schema::UI().resolveColor("var(--primary)", IM_COL32(76, 175, 80, 255));
+    }
+    
+    // Draw title bar background with subtle gradient
+    ImVec2 barMin = winPos;
+    ImVec2 barMax(winPos.x + winWidth, winPos.y + barHeight);
+    
+    // Slightly darker top edge
+    ImU32 barTop = IM_COL32(0, 0, 0, 40);
+    ImU32 barBot = IM_COL32(0, 0, 0, 20);
+    dl->AddRectFilledMultiColor(barMin, barMax, barTop, barTop, barBot, barBot);
+    
+    // Accent line at bottom of title bar
+    dl->AddLine(ImVec2(barMin.x, barMax.y), ImVec2(barMax.x, barMax.y), 
+                ScaleAlpha(accent_col, 0.6f), 1.0f);
+    
+    // Title text
+    ImFont* titleFont = Type().subtitle1();
+    ImGui::PushFont(titleFont);
+    ImVec2 titleSize = ImGui::CalcTextSize(title);
+    float titleX = barMin.x + 16.0f;
+    float titleY = barMin.y + (barHeight - titleSize.y) * 0.5f;
+    DrawTextShadow(dl, ImVec2(titleX, titleY), OnSurface(), title);
+    ImGui::PopFont();
+    
+    // Close button (X) on right side
+    if (p_open) {
+        float btnSize = 24.0f;
+        float btnX = barMax.x - btnSize - 12.0f;
+        float btnY = barMin.y + (barHeight - btnSize) * 0.5f;
+        ImVec2 btnMin(btnX, btnY);
+        ImVec2 btnMax(btnX + btnSize, btnY + btnSize);
+        
+        bool hovered = ImGui::IsMouseHoveringRect(btnMin, btnMax);
+        bool held = false;
+        if (hovered && ImGui::IsMouseClicked(0)) {
+            held = true;
+        }
+        
+        // Button background on hover
+        if (hovered) {
+            dl->AddRectFilled(btnMin, btnMax, IM_COL32(255, 255, 255, held ? 40 : 25), 4.0f);
+        }
+        
+        // Draw X icon
+        ImGui::PushFont(Type().iconSmall());
+        ImVec2 iconSize = ImGui::CalcTextSize(ICON_MD_CLOSE);
+        float iconX = btnX + (btnSize - iconSize.x) * 0.5f;
+        float iconY = btnY + (btnSize - iconSize.y) * 0.5f;
+        dl->AddText(ImVec2(iconX, iconY), 
+                    hovered ? IM_COL32(255, 255, 255, 255) : OnSurfaceMedium(), 
+                    ICON_MD_CLOSE);
+        ImGui::PopFont();
+        
+        // Handle click
+        if (hovered && ImGui::IsMouseReleased(0)) {
+            *p_open = false;
+            closeClicked = true;
+        }
+    }
+    
+    // Reserve space for title bar so content starts below it
+    ImGui::SetCursorPosY(ImGui::GetCursorPosY() + barHeight + 8.0f);
+    
+    return closeClicked;
+}
+
+// ============================================================================
+// Fullscreen Overlay Dialog
+// ============================================================================
+// Creates a fullscreen semi-transparent overlay with a centered card dialog.
+// Similar to the shutdown screen pattern but for interactive dialogs.
+
+inline bool BeginOverlayDialog(const char* title, bool* p_open, float cardWidth = 460.0f, float scrimOpacity = 0.92f)
+{
+    ImGuiViewport* vp = ImGui::GetMainViewport();
+    ImVec2 vp_pos = vp->Pos;
+    ImVec2 vp_size = vp->Size;
+    
+    // Fullscreen scrim overlay
+    ImGui::SetNextWindowPos(vp_pos);
+    ImGui::SetNextWindowSize(vp_size);
+    ImGui::SetNextWindowFocus();
+    ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(0.04f, 0.04f, 0.06f, scrimOpacity));
+    ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
+    ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 0.0f);
+    ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0, 0));
+    
+    bool opened = ImGui::Begin("##OverlayScrim", nullptr,
+        ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize |
+        ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoScrollbar |
+        ImGuiWindowFlags_NoScrollWithMouse | ImGuiWindowFlags_NoNav |
+        ImGuiWindowFlags_NoSavedSettings);
+    
+    if (!opened) {
+        ImGui::End();
+        ImGui::PopStyleVar(3);
+        ImGui::PopStyleColor();
+        return false;
+    }
+    
+    ImDrawList* dl = ImGui::GetWindowDrawList();
+    
+    // Calculate card position (centered)
+    float cardX = vp_pos.x + (vp_size.x - cardWidth) * 0.5f;
+    float cardY = vp_pos.y + vp_size.y * 0.15f;
+    
+    // Draw glass card background
+    ImVec2 cardMin(cardX, cardY);
+    ImVec2 cardMax(cardX + cardWidth, vp_pos.y + vp_size.y * 0.85f);
+    
+    // Card background with glass effect
+    GlassPanelSpec cardGlass;
+    cardGlass.rounding = 16.0f;
+    cardGlass.fillAlpha = 35;
+    cardGlass.borderAlpha = 50;
+    cardGlass.borderWidth = 1.0f;
+    DrawGlassPanel(dl, cardMin, cardMax, cardGlass);
+    
+    // Set up child region for card content
+    ImGui::SetCursorScreenPos(ImVec2(cardX, cardY));
+    ImGui::PushStyleVar(ImGuiStyleVar_ChildRounding, 16.0f);
+    ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(28, 24));
+    ImGui::PushStyleColor(ImGuiCol_ChildBg, ImVec4(0, 0, 0, 0)); // Transparent - glass already drawn
+    
+    bool childVisible = ImGui::BeginChild("##OverlayDialogContent", 
+        ImVec2(cardWidth, 0),  // 0 height = auto-size
+        ImGuiChildFlags_AutoResizeY | ImGuiChildFlags_AlwaysUseWindowPadding,
+        ImGuiWindowFlags_NoScrollbar);
+    
+    // Draw title bar with close button
+    if (childVisible && title) {
+        DrawDialogTitleBar(title, p_open);
+    }
+    
+    return childVisible;
+}
+
+inline void EndOverlayDialog()
+{
+    ImGui::EndChild();
+    ImGui::PopStyleColor();  // ChildBg
+    ImGui::PopStyleVar(2);   // ChildRounding, WindowPadding (for child)
+    
+    ImGui::End();
+    ImGui::PopStyleVar(3);   // WindowRounding, WindowBorderSize, WindowPadding (for scrim)
+    ImGui::PopStyleColor();  // WindowBg scrim
+}
+
 } // namespace material
 } // namespace ui
 } // namespace dragonx