fix(fixtures): 修正 wppop_sections PHP 序列化长度前缀（审查发现）；记录悬空图库引用为有意设计

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

docs/superpowers/plans/2026-10-20-slice-foundation-phase0-1.md

@@ -105,7 +105,7 @@ git add docs/evidence/backup-record.md && git commit -m "chore(evidence): cms
 
 ---
 
-### Task 0.3: 脱敏最小夹具
+### Task 0.3: 脱敏最小夹具 ✅ 完成（commit 681163b + 修正 ee58 待查，规格审查通过；审查发现并修复计划中 PHP 序列化长度前缀笔误 s:7→s:8、s:12→s:10；203/204 悬空图库引用为有意设计，已记入夹具 README）
 
 **Files:**
 - Create: `tests/fixtures/wxr/mini.xml`
@@ -154,7 +154,7 @@ git add docs/evidence/backup-record.md && git commit -m "chore(evidence): cms
     <content:encoded><![CDATA[<p>Product body</p>]]></content:encoded>
     <wp:postmeta><wp:meta_key><![CDATA[_thumbnail_id]]></wp:meta_key><wp:meta_value><![CDATA[202]]></wp:meta_value></wp:postmeta>
     <wp:postmeta><wp:meta_key><![CDATA[_product_image_gallery]]></wp:meta_key><wp:meta_value><![CDATA[203,204]]></wp:meta_value></wp:postmeta>
-    <wp:postmeta><wp:meta_key><![CDATA[wppop_sections]]></wp:meta_key><wp:meta_value><![CDATA[a:1:{i:0;a:2:{s:5:"title";s:7:"SpecsTab";s:7:"content";s:12:"<p>Tab</p>";}}]]></wp:meta_value></wp:postmeta>
+    <wp:postmeta><wp:meta_key><![CDATA[wppop_sections]]></wp:meta_key><wp:meta_value><![CDATA[a:1:{i:0;a:2:{s:5:"title";s:8:"SpecsTab";s:7:"content";s:10:"<p>Tab</p>";}}]]></wp:meta_value></wp:postmeta>
   </item>
   <!-- 3 page -->
   <item>