chore: baseline V8.10.0-dev.1 with v8_workflows type-mapping fix and trade-pro spec

- SiteForge Enterprise V8.10.0-dev.1 upstream source (210 tests)
- Fix: v8_workflows._mapped_input now reads both 类型/分类 columns so WXR
  imports keep post/product types instead of collapsing to page
- Docs: trade-pro theme port spec (R3) and implementation plan

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

themes/minimal/pages/search.html

@@ -0,0 +1,2 @@
+<section class="pro-inner-hero"><div class="pro-wrap"><span class="pro-eyebrow">SEARCH / CONTENT</span><h1>站内搜索</h1><p>搜索本网站的产品、品牌、新闻和案例。</p></div></section>
+<main id="main-content" class="sf-search-page pro-wrap"><label for="sf-search">输入关键词</label><input type="search" id="sf-search" placeholder="搜索产品、品牌、新闻、案例……" autofocus><div id="sf-search-count" aria-live="polite"></div><div id="sf-search-results"></div></main>