docs: define A01 grid and entry states

tests/a01-design-record-audit.ps1

@@ -22,6 +22,25 @@ foreach ($rule in $rules) {
   }
 }
 
+$layoutRules = @(
+  (ConvertFrom-Utf8Base64 '5YaF5a655a695bqmIDYzOHJweA=='),
+  (ConvertFrom-Utf8Base64 '5Li75oyJ6ZKu6auY5bqmIDEwOHJweA=='),
+  (ConvertFrom-Utf8Base64 'ZW52KHNhZmUtYXJlYS1pbnNldC1ib3R0b20p'),
+  (ConvertFrom-Utf8Base64 '6LSm5Y+35a+G56CB55m75b2VIC8g5omL5py66aqM6K+B56CB55m75b2V')
+)
+
+foreach ($rule in $layoutRules) {
+  if ($record -notmatch [regex]::Escape($rule)) {
+    throw "Missing A01 layout rule: $rule"
+  }
+}
+
+$currentStructure = [regex]::Match($record, '(?s)## 2\..*?(?=## 3\.)').Value
+$currentStructureRule = ConvertFrom-Utf8Base64 '5Lik5Liq5aSn5oyJ6ZKu5ZKM5LiA5Liq5paH5a2X5YWl5Y+j'
+if ($currentStructure -notmatch [regex]::Escape($currentStructureRule)) {
+  throw "Missing current A01 structure rule: $currentStructureRule"
+}
+
 if (-not (Test-Path -LiteralPath $effect)) {
   throw "Missing archived A01 effect: $effect"
 }