feat(v1.2.5): 优化首页滚动顺滑性、恢复整屏吸附并提升 Halo 要求至 2.27

- 首页固定模糊半径只改 opacity；Hero 离屏停绘；Navbar 滚动状态去重
- 恢复首屏整屏吸附：仅接管 0 ↔ 内容区顶部边界，scrollend + 600ms 兜底解锁
- CSS scroll-snap proximity 实际不吸附（缺页面顶部吸附点），已移除避免与 scrollTo 冲突
- 版本 1.2.5，requires >=2.27.0；源码仓库与问题反馈改为 git.nxxy335.top
- 更新 README / FAQ / 开发指南 / 更新日志，补充性能与发版说明

theme.yaml

@@ -10,8 +10,8 @@ spec:
   description: 暖如灯火，静如留白。暖屿以柔和的色调和舒缓的节奏回归内容本身，为记录与阅读留出一方安静从容的角落。
   logo: /themes/warm-island/assets/logo.png
   homepage: https://nxxy335.top/WarmIsland/
-  repo: https://github.com/sunny-335/halo-theme-WarmIsland
-  issues: https://github.com/sunny-335/halo-theme-WarmIsland/issues
+  repo: https://git.nxxy335.top/nxxy335/halo-theme-WarmIsland
+  issues: https://git.nxxy335.top/nxxy335/halo-theme-WarmIsland/issues
   settingName: "warm-island-setting"
   configMapName: "warm-island-configMap"
   customTemplates:
@@ -28,8 +28,8 @@ spec:
         description: 微信读书书架（依赖微信读书插件）
         screenshot:
         file: weread.html
-  version: "1.2.4"
-  requires: ">=2.26.0"
+  version: "1.2.5"
+  requires: ">=2.27.0"
   license:
     - name: "GPL-3.0"
       url: "https://www.gnu.org/licenses/gpl-3.0.en.html"