* fix: skip fixed footer height in auto-content-height calculation
When the Page component's footer has position: fixed, it is removed
from the normal document flow and should not be subtracted from the
available content height. Previously, the footer's offsetHeight was
always subtracted, causing incorrect height calculation for fixed
footers.
Also reset shouldAutoHeight before recalculating to prevent stale
state on hot reload.
Fixes#4576
* fix: replace getComputedStyle footer height check with footerFixed prop
Use an explicit `footerFixed` boolean prop instead of runtime
getComputedStyle detection to determine whether the footer height
should be excluded from content height calculation. This avoids
unreliable style queries and makes the behavior deterministic.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
* perf: Page supports custom height offset for flexible content height control.
允许通过 height 属性调整页面内容高度计算。修改了 Page 组件以支持自定义高度偏移量，用于更灵活的内容高度控制。
* chore: typo
* perf(page): replace height with heightOffset for flexible content sizing
The `height` prop was replaced with `heightOffset` to better describe its purpose when used with `autoContentHeight`. The new prop allows custom offset values (in pixels) to adjust content area sizing, with clearer documentation.
* feat: modal/drawer support append to main content
* feat: modal zIndex support
* fix: drawer prop define
* chore: type
* fix: modal/drawer position fixed while append to body
* docs: typo
* chore: add full-width drawer in content area
* chore: remove unnecessary class
leo