style(client/shell): 会员卡字体调小,有效期完整显示

有效期行被 chevron 挤得截断。套餐名 12→11.5、有效期 10.5→9.5、chevron 15→14、
间距 10→9,让「有效期 YYYY-MM-DD」完整显示。golden 重生成。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

client/lib/widgets/plan_badge_card.dart

@@ -54,7 +54,7 @@ class PlanBadgeCard extends ConsumerWidget {
           ),
           child: const Icon(PangolinIcons.crown, size: 15, color: PangolinColors.white),
         ),
-        const SizedBox(width: 10),
+        const SizedBox(width: 9),
         Expanded(
           child: Column(
             crossAxisAlignment: CrossAxisAlignment.start,
@@ -63,17 +63,17 @@ class PlanBadgeCard extends ConsumerWidget {
               Text(
                 isFree ? t.freePlanName : t.proMember,
                 overflow: TextOverflow.ellipsis,
-                style: PangolinText.caption.copyWith(color: c.fg1, fontWeight: FontWeight.w600, fontSize: 12),
+                style: PangolinText.caption.copyWith(color: c.fg1, fontWeight: FontWeight.w600, fontSize: 11.5),
               ),
               Text(
                 isFree ? t.quotaFree : expLine,
                 overflow: TextOverflow.ellipsis,
-                style: PangolinText.caption.copyWith(color: c.fg3, fontSize: 10.5),
+                style: PangolinText.caption.copyWith(color: c.fg3, fontSize: 9.5),
               ),
             ],
           ),
         ),
-        Icon(PangolinIcons.chevronRight, size: 15, color: c.fg3),
+        Icon(PangolinIcons.chevronRight, size: 14, color: c.fg3),
       ]),
         ),
       ),