UI: render non-play history moves as a dim lowercase tag

Per owner feedback: pass/exchange/resign/timeout rows in the move history now read
as a dim, parenthesised, lowercase tag — e.g. «(обмен)» — so they stand apart from a
scored word. The move.* catalog values are lowercased (resign RU → «сдаюсь»); the
parentheses and the muted colour (var(--text-muted)) are applied in the view via a
.ha.sys modifier.

ui/src/lib/i18n.test.ts

@@ -14,9 +14,9 @@ describe('i18n catalog', () => {
   });
 
   it('localizes move-history action labels', () => {
-    expect(translate('ru', 'move.exchange')).toBe('Обмен');
-    expect(translate('ru', 'move.pass')).toBe('Пас');
-    expect(translate('en', 'move.exchange')).toBe('Exchange');
+    expect(translate('ru', 'move.exchange')).toBe('обмен');
+    expect(translate('ru', 'move.pass')).toBe('пас');
+    expect(translate('en', 'move.exchange')).toBe('exchange');
   });
 
   it('maps error codes to keys with a generic fallback', () => {