feat(map): 奖状区域点击弹通联详情 + 过小区域圆点渲染/放大命中 + DXCC 资产补齐 88 区

- DXCC/WAPC/WAJA/WAS/WAZ 点区域弹只读通联详情（复用 VUCC 样式，隐藏匹配/标记站）
- 弹窗标题与 VUCC 统一（等宽字体、同 48dp 头部行高=同 6dp 顶距，回归测试钉死）
- WAZ 标题 CQ ZONE <n>，DXCC 副行带 DXCC <code> 前缀
- 投影过小区块渲染圆点（已通=绿）+ 标签常显；≤80px 区域点击命中放大，小实体优先
- dxcc.json 231→278 区：B 批岛屿 + 47 实体（威克/中途岛/扬马延/布韦/斯瓦尔巴/
  圣赫勒拿/毛里求斯/塞舌尔/佛得角/科摩罗/留尼汪/科索沃/斯普拉特利/黄岩岛等）
- THIRD_PARTY_NOTICES: Natural Earth 来源补 10m map units/rivers

core/presentation/src/main/res/values-zh/strings.xml

@@ -125,6 +125,7 @@
     <string name="map_visibility">能见度：%s</string>
     <!-- Worked-grid QSO dialog -->
     <string name="grid_qso_calls_count" formatted="false">%d 个呼号 · %d 次通联</string>
+    <string name="region_qso_empty">该区域暂无已确认通联</string>
     <string name="grid_qso_count_one">%d QSO</string>
     <string name="grid_qso_count_many">%d QSOs</string>
     <string name="grid_qso_first">首通</string>

core/presentation/src/main/res/values/strings.xml

@@ -145,6 +145,7 @@
     <string name="map_visibility">Visibility: %s</string>
     <!-- Worked-grid QSO dialog -->
     <string name="grid_qso_calls_count" formatted="false">%d callsigns · %d QSOs</string>
+    <string name="region_qso_empty">No confirmed QSOs in this region yet</string>
     <string name="grid_qso_count_one">%d QSO</string>
     <string name="grid_qso_count_many">%d QSOs</string>
     <string name="grid_qso_first">First</string>