fix(theme): QGroupBox indicator, hyperlink color, and report defaults

- Add QGroupBox::indicator styles matching QCheckBox::indicator for
  consistent checkbox appearance in checkable group boxes (#44)
- Add QLabel[haslink] color rule using Catppuccin lavender (#b4befe)
  so hyperlinks render correctly in the dark theme (#43)
- Add checkLogging and checkShowReportViewOnError defaults to the
  KindredCreate preference pack (#41)

Closes #41, closes #43, closes #44

src/Gui/Stylesheets/KindredCreate.qss

@@ -744,6 +744,33 @@ QGroupBox::title {
     background-color: #1e1e2e;
 }
 
+QGroupBox::indicator {
+    width: 18px;
+    height: 18px;
+    border: 2px solid #585b70;
+    border-radius: 4px;
+    background-color: #313244;
+}
+
+QGroupBox::indicator:hover {
+    border-color: #cba6f7;
+}
+
+QGroupBox::indicator:checked {
+    background-color: #cba6f7;
+    border-color: #cba6f7;
+}
+
+QGroupBox::indicator:checked:disabled {
+    background-color: #6c7086;
+    border-color: #6c7086;
+}
+
+QGroupBox::indicator:disabled {
+    background-color: #181825;
+    border-color: #45475a;
+}
+
 /* =============================================================================
    Tree View
    ============================================================================= */
@@ -985,6 +1012,11 @@ QLabel:disabled {
     color: #6c7086;
 }
 
+/* Hyperlinks — sets QPalette::Link via Application.cpp haslink mechanism */
+QLabel[haslink="true"] {
+    color: #b4befe;
+}
+
 /* =============================================================================
    Frames
    ============================================================================= */