fix(admin): translate asset notification type labels

Register Chinese labels and matching badge tones for balance and points
increase/decrease types across message filters, list badges and details.
Add regression coverage without changing notification delivery behavior.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/widget-system/message-admin-harness.php

@@ -84,7 +84,7 @@ namespace {
         public function get_var($sql) { return 2; }
         public function get_results($sql, $format) { return []; }
         public function get_row($sql, $format) { return ['total' => 2, 'unread' => 1, 'today' => 1, 'recipients' => 2]; }
-        public function get_col($sql) { return ['system']; }
+        public function get_col($sql) { return ['system', 'asset_balance_increase', 'asset_balance_decrease', 'asset_points_increase', 'asset_points_decrease']; }
         public function query($sql) { $this->queries[] = $sql; return 1; }
         public function esc_like($text) { return addcslashes($text, '_%\\'); }
     }
@@ -120,6 +120,10 @@ namespace {
     $out['table'] = $probe->html('render_message_table', [$row, array_merge($row, ['id' => 9, 'is_read' => 1, 'read_at' => '2026-10-30 03:30:00'])], $filters, 3, false);
     $out['empty'] = $probe->html('render_message_table', [], $filters, 1, false);
     $out['cache_calls'] = $GLOBALS['cache_calls'];
+    $out['asset_table'] = $probe->html('render_message_table', [array_merge($row, ['type' => 'asset_balance_increase'])], $filters, 1, false);
+    foreach (['asset_balance_increase', 'asset_balance_decrease', 'asset_points_increase', 'asset_points_decrease'] as $type) {
+        $out['asset_types'][$type] = [\AKSRT\Messages\MessageTypes::label($type), \AKSRT\Messages\MessageTypes::tone($type)];
+    }
 
     $wpdb->prepared = [];
     \AKSRT\Messages\NotificationAdminQuery::paginate($out['query_filters'], 1);