docs(wiki): BUG-M4/L1 已修复 + wiki 数字更新

- BUG-M4 标记为已修复 (admin_guard_middleware)
- BUG-L1 标记为已验证修复 (代码已统一为 pain_seed_categories)
- E2E 04-17 MEDIUM/LOW 全部关闭
- butler.md/log.md: pain_seeds → pain_seed_categories

wiki/middleware.md

@@ -1,6 +1,6 @@
 ---
 title: 中间件链
-updated: 2026-04-14
+updated: 2026-04-17
 status: active
 tags: [module, middleware, runtime]
 ---