upgrade: adopt V8.31.1 (theme 1.3/1.4 redesigns, editor deep-canvas, guided launch, component library)

Overlay 190 upstream items (V8.22→8.31) preserving trade-pro theme,
registry tests, and design docs. Re-applied full patch set on identical
anchors (discovery/env_for/blocks.css/type-mapping/locale-override/
theme_color/frontend entries/test_theme_pro_v3 mods) plus compose pins.

Verified: theme suites 35/35; dual-baseline full run 415 passed vs
pristine 386+29 ours, FAILED-set diff EMPTY (same 10 Windows env fails).
Live: container 8.31.1-dev.1 healthy, hesupipe 192 entries intact,
trade-pro build 203 pages 0 errors.

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

themes/minimal/pages/about.html

@@ -1,2 +1,4 @@
-<section class="pro-inner-hero pro-info-hero"><div class="pro-wrap"><span class="pro-eyebrow">{{ 'GET IN TOUCH' if kind=='contact' else ('OUR STORY' if kind=='about' else 'EXPLORE') }}</span><h1>{{page.title}}</h1><p>{{page.summary}}</p></div></section>
-<section class="pro-section pro-info-section"><div class="pro-wrap pro-info-grid"><div><span class="pro-eyebrow">{{'CONNECT / CONTACT' if kind=='contact' else 'ABOUT / DISCOVER'}}</span><h2>{{'让我们开始沟通。' if kind=='contact' else page.title}}</h2>{% if kind=='contact' and footer_email %}<a class="pro-contact-email" href="mailto:{{footer_email}}">{{footer_email}} ↗</a>{% elif kind=='contact' %}<p class="pro-muted">请先在网站管理后台填写正式联系邮箱。</p>{% endif %}</div><div class="pro-info-copy">{{body_copy(content,page)}}{% if page.cover %}<img class="pro-info-photo" src="{{safe_image(page.cover)}}" alt="{{page.title}}">{% endif %}</div></div></section>
+<div class="pro-v30-page pro-v30-about pro-v30-about-minimal"><section class="pro-v30-about-opening"><div class="pro-wrap"><span class="pro-eyebrow">OUR COMPANY / APPROACH</span><div class="pro-v30-about-heading"><h1>{{page.title}}</h1><p>{{page.summary or site.tagline or '关于我们和所做的事情'}}</p></div></div></section>
+ <section class="pro-section pro-v30-about-story"><div class="pro-wrap pro-v30-about-grid"><div class="pro-v30-about-media">{% if page.cover %}<img src="{{safe_image(page.cover)}}" alt="{{page.title}}" loading="lazy">{% else %}<div class="pro-v30-media-placeholder" aria-hidden="true"><span>OUR / STORY</span></div>{% endif %}</div><div class="pro-v30-about-copy"><span class="pro-eyebrow">ABOUT / 我们的故事</span><h2>让作品和内容自己说话</h2>{{body_copy(content,page)}}<a class="pro-v30-text-action" href="/contact/">联系与合作 ↗</a></div></div></section>
+ {% if features %}<section class="pro-section pro-v30-about-services"><div class="pro-wrap">{{section_title('WHAT WE DO','相关服务','/services/')}}{{grid(features,'service')}}</div></section>{% endif %}
+ {% if cases %}<section class="pro-section pro-v30-about-cases"><div class="pro-wrap">{{section_title('SELECTED WORK','相关项目','/cases/')}}{{grid(cases,'case')}}</div></section>{% endif %}</div>