release: bump version to 0.27.4

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docs/CHANGELOG.md

@@ -8,6 +8,13 @@ This project follows the repository versioning rule:
 - `improvement` -> `+0.0.1`（bugfix + 小功能混合）
 - `bugfix` -> `+0.0.1`
 
+## [0.27.4] — 2026-04-14
+
+### 🔧 Improvements
+- info-card 改为懒加载动态挂载：页面初始 DOM 不再含隐藏的 `#info-panel` 节点，仅首次点击交互元素时创建
+
+---
+
 ## [0.27.3] — 2026-04-14
 
 ### 🔧 Improvements

docs/version-history.md

@@ -16,12 +16,13 @@
 ## Current Version
 
 - `main` 当前主线历史推导到：`0.16.5`
-- `dev` 当前开发分支历史推导到：`0.27.3`
+- `dev` 当前开发分支历史推导到：`0.27.4`
 
 ## Timeline
 
 | Version | Type | Branch | Commit | Summary |
 | --- | --- | --- | --- | --- |
+| `0.27.4` | improvement | `dev` | — | info-card 懒加载动态挂载，页面初始不再有隐藏节点 |
 | `0.27.3` | improvement | `dev` | — | TV panel 折叠方向稳定、视频跳动修复、图例折叠按钮修复、搜索图标调整 |
 | `0.27.2` | improvement | `dev` | — | 修复 brand copy 宽度问题，提取 --brand-copy-width CSS 变量 |
 | `0.27.1` | improvement | `dev` | — | HUD 面板拖拽 L 形边界约束、brand 组件整体缩放、图层面板宽度优化、搜索叉叉修复 |