fix: share launch admin credential with automation

scripts/run-ai-contract-full-automation-until-blocked.ps1

@@ -5,7 +5,8 @@ param(
   [switch]$StopAfterPhase2,
   [switch]$StopAfterPhase3,
   [switch]$StopAfterPhase4,
-  [switch]$StopAfterPhase5
+  [switch]$StopAfterPhase5,
+  [string]$AdminPasswordFile = ""
 )
 
 $ErrorActionPreference = "Stop"
@@ -16,12 +17,29 @@ $artifactDir = Join-Path $repoRoot "project-docs\automation-artifacts\run-until-
 $summaryJson = Join-Path $artifactDir "summary.json"
 $summaryMd = Join-Path $artifactDir "summary.md"
 $docsRoot = Join-Path $repoRoot "project-docs"
+if ([string]::IsNullOrWhiteSpace($AdminPasswordFile)) {
+  $AdminPasswordFile = Join-Path $HOME ".ai-contract-platform\production-admin-password.txt"
+}
+if (-not [System.IO.Path]::IsPathRooted($AdminPasswordFile)) {
+  $AdminPasswordFile = Join-Path $repoRoot $AdminPasswordFile
+}
 
 New-Item -ItemType Directory -Force -Path $artifactDir | Out-Null
 
 $docsIndexPath = Join-Path $docsRoot "README.md"
 $configPath = Join-Path $repoRoot "backend\app\core\config.py"
 $composePath = Join-Path $repoRoot "docker-compose.server.yml"
+$adminPasswordSource = "environment"
+if ([string]::IsNullOrWhiteSpace($env:AI_CONTRACT_ADMIN_PASSWORD)) {
+  $adminPasswordSource = "missing"
+  if (Test-Path -LiteralPath $AdminPasswordFile -PathType Leaf) {
+    $filePassword = (Get-Content -LiteralPath $AdminPasswordFile -Raw -Encoding UTF8).Trim()
+    if (-not [string]::IsNullOrWhiteSpace($filePassword)) {
+      $env:AI_CONTRACT_ADMIN_PASSWORD = $filePassword
+      $adminPasswordSource = "local credential file"
+    }
+  }
+}
 
 $results = New-Object System.Collections.Generic.List[object]
 
@@ -68,6 +86,7 @@ function Write-Summaries {
     runTimestamp = $timestamp
     artifactDir = $artifactDir
     resultCount = $results.Count
+    adminPasswordSource = $adminPasswordSource
     phasePlan = Get-PhasePlanSummary -PhaseDefinitions $PhaseDefinitions
     results = $results
   }
@@ -79,6 +98,7 @@ function Write-Summaries {
   $lines += ""
   $lines += "- artifactDir: $artifactDir"
   $lines += "- generatedAt: $(Get-Date -Format s)"
+  $lines += "- adminPasswordSource: $adminPasswordSource"
   $lines += ""
   $lines += "## phase plan"
   $lines += ""