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/industrial/pages/listing.html

@@ -1,2 +1,6 @@
-<section class="pro-inner-hero pro-listing-hero"><div class="pro-wrap"><span class="pro-eyebrow">DISCOVER / {{'CATEGORY' if kind=='category' else 'COLLECTION'}}</span><h1>{{page.title}}</h1><p>{{page.summary or '查看此栏目的全部已发布内容。'}}</p><div class="pro-breadcrumb"><a href="/">首页</a><span>／</span><strong>{{page.title}}</strong></div></div></section>
-<section class="pro-section pro-list-section"><div class="pro-wrap">{{ filters() }}<div class="pro-filter-scope">{{grid(listing,'catalog')}}</div>{% if pagination and pagination.pages>1 %}<nav class="pro-pages-nav" aria-label="商品列表分页">{% if pagination.previous %}<a href="{{pagination.previous}}" rel="prev">← 上一页</a>{% endif %}<span>第 {{pagination.page}} / {{pagination.pages}} 页</span>{% if pagination.next %}<a href="{{pagination.next}}" rel="next">下一页 →</a>{% endif %}</nav>{% endif %}</div></section>
+<div class="pro-v30-page pro-v30-listing pro-v30-technical-index">
+ <section class="pro-v30-page-intro"><div class="pro-wrap pro-v30-intro-layout"><div class="pro-v30-intro-main"><span class="pro-eyebrow">ENGINEERING MATERIALS / INDEX</span><h1>{{page.title}}</h1><p>{{page.summary or '通过材料分类与规格快速查找产品'}}</p></div><div class="pro-v30-intro-aside"><span class="pro-v30-overline">BROWSE / EXPLORE</span><span class="pro-v30-index-number">{{'%02d'|format(listing|length)}}</span><span class="pro-v30-caption">本页展示内容</span></div></div></section>
+ <section class="pro-section pro-v30-index-body"><div class="pro-wrap"><div class="pro-v30-index-toolbar"><div class="pro-v30-section-title"><span class="pro-eyebrow">CONTENTS / FIND YOUR FIT</span><h2>产品与材料</h2></div><a class="pro-v30-subtle-link" href="/contact/">需要协助？联系沟通 ↗</a></div>
+ {{filters()}}<div class="pro-filter-scope pro-v30-results" aria-live="polite">{{grid(listing,'catalog')}}</div>
+ {% if pagination and pagination.pages>1 %}<nav class="pro-pages-nav" aria-label="列表分页">{% if pagination.previous %}<a href="{{pagination.previous}}" rel="prev">← 上一页</a>{% endif %}<span>第 {{pagination.page}} / {{pagination.pages}} 页</span>{% if pagination.next %}<a href="{{pagination.next}}" rel="next">下一页 →</a>{% endif %}</nav>{% endif %}
+ </div></section></div>