$ErrorActionPreference = 'Stop'
$root = Split-Path -Parent $PSScriptRoot
$page = Get-Content -LiteralPath (Join-Path $root 'pages/tree/t01-tree-overview.vue') -Raw -Encoding utf8

foreach ($required in @(
  'import AppButton from "@/components/AppButton.vue"',
  '<AppButton',
  'type="secondary"',
  '@click="toMember"',
  '@click="toAddRelative"',
  't01-member-node-standard.png',
  't01-member-node-selected.png',
  't01-state-panel.png',
  't01-member-drawer.png',
  'v-for="connector in lineageConnectors"',
  'lineage-pan-cue',
  'const treeScrollLeft = ref(90)',
  ':scroll-left="treeState === ''tree'' ? treeScrollLeft : 0"',
  ':style="treeState === ''tree'' ? treeMetricsStyle : undefined"'
)) {
  if ($page -notmatch [regex]::Escape($required)) { throw "T01 member action asset missing: $required" }
}

foreach ($forbidden in @(
  'a01-primary-button-v2.png',
  'a01-secondary-button-v2.png'
)) {
  if ($page -match [regex]::Escape($forbidden)) { throw "T01 must consume AppButton instead of legacy action asset: $forbidden" }
}

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)\.tree-stage--lineage\s*\{[^}]*display:\s*grid;[^}]*grid-template-columns:\s*190rpx minmax\(0, 1fr\);',
  '(?s)\.generation-rail\s*\{[^}]*display:\s*grid;[^}]*width:\s*190rpx;',
  '(?s)\.tree-scroll--lineage\s*\{[^}]*grid-area:\s*1 / 2;[^}]*min-width:\s*0;',
  '(?s)\.lineage-pan-cue\s*\{[^}]*grid-area:\s*1 / 2;',
  'const treeMetricsStyle = computed',
  '(?s)\.generation-band\s*\{[^}]*display:\s*grid;',
  '(?s)\.generation-band image,\s*\.generation-band__copy\s*\{[^}]*grid-area:\s*1 / 1;',
  '(?s)\.member-node\s*\{[^}]*display:\s*grid;',
  '(?s)\.member-node__skin,\s*\.member-node__copy\s*\{[^}]*grid-area:\s*1 / 1;',
  '(?s)\.member-sheet\s*\{[^}]*min-height:\s*240rpx;',
  '(?s)\.sheet-actions\s*\{[^}]*justify-content:\s*center;[^}]*margin-top:\s*auto;',
  '(?s)\.sheet-action\s*\{[^}]*width:\s*250rpx;[^}]*min-height:\s*88rpx;'
)) {
  if ($page -notmatch $rule) { throw "T01 readable visual rule missing: $rule" }
}

if ($page -match '(?s)<view\s+class="tree-canvas".*?<view class="lineage-pan-cue">') {
  throw 'T01 horizontal reading cue must stay in the visible lineage viewport, not inside the wide canvas'
}

Write-Output 'T01-ALL-STATES-VISUAL-CONTRACT PASS'