K2GO-426 fix(modules): show the detail hero glyph centered on a neutral panel

controller/app/src/main/java/org/appdevforall/k2go/redesign/DashboardDetailFragment.java

@@ -97,7 +97,9 @@ public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup c
         back.setText("‹ " + getString(R.string.k2go_mod_back));
         back.setOnClickListener(v -> requireActivity().getOnBackPressedDispatcher().onBackPressed());
 
-        ((ImageView) root.findViewById(R.id.k2go_moddet_image)).setImageResource(R.drawable.k2go_module_placeholder);
+        // K2GO-426: use the same glyph the list row bullet uses (ic_card_dashnode), on the shared hero
+        // panel, so the Dashboard is consistent between the list and the detail.
+        ((ImageView) root.findViewById(R.id.k2go_moddet_image)).setImageResource(R.drawable.ic_card_dashnode);
         ((TextView) root.findViewById(R.id.k2go_moddet_title)).setText(R.string.k2go_dash_detail_title);
         ((TextView) root.findViewById(R.id.k2go_moddet_sub)).setText(R.string.k2go_dash_detail_sub);
         ((TextView) root.findViewById(R.id.k2go_moddet_desc)).setText(R.string.k2go_dash_detail_desc);

controller/app/src/main/res/drawable/ic_card_dashnode.xml

@@ -1,3 +1,6 @@
+<!-- K2GO-426: Dashboard glyph (Material dashboard, four rectangles forming a square). One drawable for
+     both the Module management list row bullet and the detail hero, so the Dashboard stays consistent.
+     Tinted from the theme at runtime; the fill here is a placeholder color. -->
 <vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="40dp" android:height="40dp" android:viewportWidth="24" android:viewportHeight="24">
     <path android:fillColor="#000000" android:pathData="M3 13h8V3H3v10zm0 8h8v-6H3v6zm10 0h8V11h-8v10zm0-18v6h8V3h-8z" />
 </vector>

controller/app/src/main/res/drawable/k2go_hero_panel.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- K2GO-426: neutral rounded panel behind the module detail hero glyph. Theme-aware fill so the
+     centered glyph reads on both themes (was: raw full-width glyph, black on dark). -->
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
+    <solid android:color="@color/k2go_hairline" />
+    <corners android:radius="18dp" />
+</shape>

controller/app/src/main/res/layout/fragment_k2go_module_detail.xml

@@ -32,14 +32,18 @@
                 android:textAppearance="?attr/textAppearanceBodyMedium"
                 android:textColor="@color/k2go_teal" />
 
+            <!-- K2GO-426: hero = neutral panel background + centered glyph. The glyph (src) is set in
+                 code per module and tinted from the theme; padding shrinks it and gives an even margin,
+                 so every module reads the same on both themes (was: raw full-width glyph, black on dark). -->
             <ImageView
                 android:id="@+id/k2go_moddet_image"
                 android:layout_width="match_parent"
-                android:layout_height="wrap_content"
+                android:layout_height="180dp"
                 android:layout_marginTop="8dp"
-                android:adjustViewBounds="true"
+                android:background="@drawable/k2go_hero_panel"
+                android:padding="32dp"
                 android:scaleType="fitCenter"
-                android:src="@drawable/k2go_module_placeholder"
+                android:tint="@color/k2go_teal"
                 android:importantForAccessibility="no" />
 
             <TextView