Review changes batch 6 of 6

tests/t01-all-states-visual-contract.ps1

@@ -0,0 +1,31 @@
+$ErrorActionPreference = 'Stop'
+$root = Split-Path -Parent $PSScriptRoot
+$page = Get-Content -LiteralPath (Join-Path $root 'pages/tree/t01-tree-overview.vue') -Raw -Encoding utf8
+
+foreach ($required in @(
+  'a01-primary-button-v2.png',
+  'a01-secondary-button-v2.png',
+  't01-member-node-standard.png',
+  't01-member-node-selected.png',
+  't01-state-panel.png',
+  't01-member-drawer.png',
+  'lineage-connector--root',
+  'lineage-pan-cue'
+)) {
+  if ($page -notmatch [regex]::Escape($required)) { throw "T01 member action asset missing: $required" }
+}
+
+foreach ($rule in @(
+  '(?s)\.tree-toolbar__title text:last-child\s*\{[^}]*font-size:\s*22rpx;',
+  '(?s)\.tree-toolbar__actions\s*\{[^}]*font-size:\s*23rpx;',
+  '(?s)\.generation-band\s*\{[^}]*font-size:\s*22rpx;',
+  '(?s)\.node-relation\s*\{[^}]*font-size:\s*21rpx;',
+  '(?s)\.node-years\s*\{[^}]*font-size:\s*20rpx;',
+  '(?s)\.tree-state-card__copy\s*\{[^}]*font-size:\s*24rpx;',
+  '(?s)\.sheet-meta\s*\{[^}]*font-size:\s*22rpx;',
+  '(?s)\.sheet-action text\s*\{[^}]*font-family:\s*''Microsoft YaHei''[^}]*font-size:\s*22rpx;'
+)) {
+  if ($page -notmatch $rule) { throw "T01 readable visual rule missing: $rule" }
+}
+
+Write-Output 'T01-ALL-STATES-VISUAL-CONTRACT PASS'