feat: add ota and ui changes

app/src/main/res/values/styles_ev.xml

@@ -1,11 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- EVSuite - component styles. See DESIGN.md section Components.
-     Generated by tools/sync-tokens.mjs: identical in all six apps, edit only
-     tools/tokens/styles.xml. The application theme itself stays in values/themes.xml,
-     because its name changes from one app to the next.
-
-     These styles carry the same names everywhere, so a screen can move between
-     repositories without being renamed. -->
+<!-- EVABRPUploader components. The user-requested OLED theme intentionally
+     overrides the shared EVSuite tokens; see AGENTS.md for the local design direction. -->
 <resources>
 
     <!-- Dialogs inherit the same contrast as everything else: without this they fall
@@ -24,6 +19,12 @@
          away. This is the minimum used everywhere in the suite, including where
          Material offers something much smaller. -->
     <style name="Widget.EV.Button" parent="Widget.Material3.Button">
+        <item name="android:textAllCaps">false</item>
+        <item name="android:fontFamily">sans-serif-medium</item>
+        <item name="android:letterSpacing">0.01</item>
+        <item name="backgroundTint">@color/ev_accent</item>
+        <item name="android:textColor">@color/ev_on_accent</item>
+        <item name="elevation">0dp</item>
         <item name="shapeAppearanceOverlay">@style/ShapeAppearanceOverlay.EV.Button</item>
         <item name="android:minHeight">@dimen/touch_target</item>
         <item name="android:textSize">@dimen/text_body</item>
@@ -32,6 +33,11 @@
     </style>
 
     <style name="Widget.EV.Button.Outlined" parent="Widget.Material3.Button.OutlinedButton">
+        <item name="android:textAllCaps">false</item>
+        <item name="android:fontFamily">sans-serif-medium</item>
+        <item name="backgroundTint">@color/ev_surface_raised</item>
+        <item name="strokeColor">@color/ev_outline</item>
+        <item name="android:textColor">@color/ev_text_primary</item>
         <item name="shapeAppearanceOverlay">@style/ShapeAppearanceOverlay.EV.Button</item>
         <item name="android:minHeight">@dimen/touch_target</item>
         <item name="android:textSize">@dimen/text_body</item>
@@ -64,14 +70,14 @@
         <item name="android:textStyle">bold</item>
     </style>
 
-    <!-- One Display element per screen: two 32sp numbers competing for attention are
-         two glances, and the glance is the budget. -->
+    <!-- Shared typography base; the overview uses larger hero and metric variants. -->
     <style name="Text.EV.Display" parent="TextAppearance.Material3.HeadlineSmall">
         <item name="android:textSize">@dimen/text_display</item>
         <item name="android:textColor">@color/ev_text_primary</item>
     </style>
 
     <style name="Text.EV.Title" parent="TextAppearance.Material3.TitleLarge">
+        <item name="android:fontFamily">sans-serif-medium</item>
         <item name="android:textSize">@dimen/text_title</item>
         <item name="android:textColor">@color/ev_text_primary</item>
     </style>
@@ -86,11 +92,8 @@
         <item name="android:textColor">@color/ev_text_secondary</item>
     </style>
 
-    <!-- The suite radius applied to buttons. Material3 buttons are fully rounded by
-         default, which reads as a different design language from every card and dialog
-         around them. This lived in EVSwipe only, in a generated file, so the first sync
-         deleted it — one radius across the suite has to be a token, not a local edit. -->
+    <!-- Rounded corners echo the glass panels without making every button a pill. -->
     <style name="ShapeAppearanceOverlay.EV.Button" parent="">
-        <item name="cornerSize">@dimen/ev_corner</item>
+        <item name="cornerSize">18dp</item>
     </style>
 </resources>