fix(uploads): reclaim abandoned front-submit attachments

Mark new regular and chunked uploads as pending and claim persisted article references, including partial saves and large reference sets. Protect associated media from cleanup and add upload lifecycle regression coverage.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/widget-system/report-ban-contract.test.cjs

@@ -331,7 +331,7 @@ test('native ban page mirrors the reference theme layout', () => {
   const tickets = read('src/Admin/Native/UsersMenusTickets.php')
 
   // 菜单与页面标题对齐参考主题（page title=处理举报及禁封申诉，menu title=举报&禁封申诉）
-  assert.ok(usersMenus.includes(`__('处理举报及禁封申诉', 'aksrt'),\n            __('举报&禁封申诉', 'aksrt')`), 'submenu titles should match the reference theme')
+  assert.match(usersMenus, /__\('处理举报及禁封申诉', 'aksrt'\),\s*__\('举报&禁封申诉', 'aksrt'\)/, 'submenu titles should match the reference theme')
   assert.ok(usersMenus.includes('用户禁封申诉及用户举报管理'), 'page heading should match the reference theme')
 
   // 类型筛选按钮组 + 状态 subsubsub + 搜索