v1.8.1

## What's Changed
* fix(a11y): add accessible labels to ConfigPanel inputs and icon buttons (WCAG 4.1.2) by @akinshaywai in https://github.com/alibaba/page-agent/pull/454
* chore(scripts): add parallel build scripts by @gaomeng1900 in https://github.com/alibaba/page-agent/pull/455
* design(ui): improve HistoryList loading/empty states and add button tooltips by @akinshaywai in https://github.com/alibaba/page-agent/pull/456
* refactor(setup): consolidate prettier config and streamline CI by @gaomeng1900 in https://github.com/alibaba/page-agent/pull/458
* chore: support claude code and antigravity by @gaomeng1900 in https://github.com/alibaba/page-agent/pull/459
* fix: upgrade wxt to fix npm ci by @gaomeng1900 in https://github.com/alibaba/page-agent/pull/463
* docs(website): add qwen3.6-max/flash to model list by @gaomeng1900 in https://github.com/alibaba/page-agent/pull/464
* chore(deps-dev): bump the development-dependencies group with 4 updates by @dependabot[bot] in https://github.com/alibaba/page-agent/pull/465
* fix: add rel="noopener noreferrer" to hub link in ConfigPanel by @akinshaywai in https://github.com/alibaba/page-agent/pull/472
* chore: remove debug console.log statements from production code by @akinshaywai in https://github.com/alibaba/page-agent/pull/473
* feat(llms): add transformRequestBody hook and improve prompt assembly by @zzy-life in https://github.com/alibaba/page-agent/pull/480
* docs(website): add prompt caching guidance by @gaomeng1900 in https://github.com/alibaba/page-agent/pull/481
* fix(mcp): advertise the package version by @fuyua9 in https://github.com/alibaba/page-agent/pull/476
* fix(llms): remove tool_choice for deepseek models by @gaomeng1900 in https://github.com/alibaba/page-agent/pull/482
* docs(website): add DeepSeek v4 flash and pro to tested models by @gaomeng1900 in https://github.com/alibaba/page-agent/pull/483
* feat(models): support gpt-5.4 and update model list by @gaomeng1900 in https://github.com/alibaba/page-agent/pull/484

## New Contributors
* @akinshaywai made their first contribution in https://github.com/alibaba/page-agent/pull/454
* @zzy-life made their first contribution in https://github.com/alibaba/page-agent/pull/480
* @fuyua9 made their first contribution in https://github.com/alibaba/page-agent/pull/476

**Full Changelog**: https://github.com/alibaba/page-agent/compare/v1.8.0...v1.8.1