修改完成

tests/tree-member-form-document-flow-contract.ps1

@@ -5,16 +5,14 @@ $component = [System.IO.File]::ReadAllText((Join-Path $root 'components/tree/Tre
 foreach ($expected in @(
   'grid-template-columns: auto minmax(0, 1fr)',
   'min-height: min(640px, calc((100vw - 16px) * 1.48))',
-  'pointer-events: none'
+  'background: url("/static/assets/modules/tree/transparent/t01-state-panel.png")',
+  'background: url("/static/assets/modules/tree/transparent/t07-search-input-frame.png")'
 )) {
   if (-not $component.Contains($expected)) { throw "TreeMemberForm document-flow contract missing: $expected" }
 }
 
-foreach ($selector in @('.member-form, .member-form-result','.member-field > text','.member-field input')) {
-  $escaped = [regex]::Escape($selector)
-  if ($component -match "(?s)$escaped\s*\{[^}]*position\s*:\s*(absolute|fixed|sticky)\s*;") {
-    throw "TreeMemberForm normal content selector uses positioning: $selector"
-  }
+if ($component -match '(?m)\bposition\s*:') {
+  throw 'TreeMemberForm must not retain positioning in ordinary forms, fields, actions, or result content'
 }
 
 Write-Output 'TREE-MEMBER-FORM-DOCUMENT-FLOW-CONTRACT PASS'