fix: product inquiry honeypot hidden + review minors (10b quality round)

- .pro-honeypot hidden under .sf-theme-trade-pro scope (was visible:
  pro-base hide rule needs .pro-inquiry ancestor, new form lacks it)
- drop redundant .sf-tp-photo class on placeholder branch (dual
  aspect-ratio, shadow asymmetry)
- spec table filters 'gallery' rows (string-form gallery leaked as a row)
- comment documents pro.js sibling-node constraint on gallery markup

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

themes/trade-pro/pages/product.html

@@ -19,6 +19,8 @@
       <a href="/">Home</a><a href="/products/">Products</a><span class="sf-tp-breadcrumb-current">{{ page.title }}</span>
     </nav>
     <div class="sf-tp-product-grid">
+      {# pro.js 经 .pro-gallery-thumbs 的 parentElement 定位 .pro-product-media img——
+         缩略图容器必须保持为 .pro-product-media 的兄弟节点（不可外包滚动容器） #}
       <div class="sf-tp-product-gallery" data-reveal>
         {% if gallery %}
         <div class="sf-tp-product-media pro-product-media">
@@ -32,7 +34,7 @@
         </div>
         {% endif %}
         {% else %}
-        <div class="sf-tp-product-media sf-tp-photo pro-product-media">
+        <div class="sf-tp-product-media pro-product-media">
           <div class="sf-tp-photo-plain" aria-hidden="true"><span>PRODUCT</span></div>
         </div>
         {% endif %}
@@ -67,7 +69,8 @@
     <div class="sf-tp-table-scroll" data-reveal>
       <table class="sf-tp-spec-table">
         <tbody>
-          {% for row in specs %}
+          {# theme_pro excludes management fields; 'gallery' is a media list, not a spec #}
+          {% for row in specs if row.label != 'gallery' %}
           <tr><th scope="row">{{ row.label }}</th><td>{{ row.value }}</td></tr>
           {% endfor %}
         </tbody>