fix(n+1): 批量查询替代循环单查

- IsAdminBootstrapRequired: userRepo.GetByID 循环 → GetByIDs 批量
- AssignRoles: roleRepo.GetByID 循环 → GetByIDs 批量
- 在 userRepositoryInterface 补充 GetByIDs 方法签名

frontend/admin/scripts/run-playwright-auth-e2e.ps1

@@ -125,6 +125,75 @@ function Sync-AdminBootstrapExpectation {
   Write-Host "playwright e2e admin bootstrap expected: $requiresBootstrap"
 }
 
+function Get-PositiveIntegerFromEnv {
+  param(
+    [Parameter(Mandatory = $true)][string]$Name,
+    [int]$DefaultValue = 3
+  )
+
+  $rawValue = [Environment]::GetEnvironmentVariable($Name)
+  if ([string]::IsNullOrWhiteSpace($rawValue)) {
+    return $DefaultValue
+  }
+
+  $parsedValue = 0
+  if ([int]::TryParse($rawValue, [ref]$parsedValue) -and $parsedValue -gt 0) {
+    return $parsedValue
+  }
+
+  return $DefaultValue
+}
+
+function Get-PlaywrightScenarioNames {
+  $env:E2E_LIST_SCENARIOS = '1'
+  try {
+    $output = & node ./scripts/run-playwright-cdp-e2e.mjs
+    if ($LASTEXITCODE -ne 0) {
+      throw "failed to list Playwright CDP scenarios with exit code $LASTEXITCODE"
+    }
+
+    return @($output | Where-Object { -not [string]::IsNullOrWhiteSpace($_) })
+  } finally {
+    Remove-Item Env:E2E_LIST_SCENARIOS -ErrorAction SilentlyContinue
+  }
+}
+
+function Invoke-IsolatedPlaywrightScenario {
+  param(
+    [Parameter(Mandatory = $true)][string]$ScenarioName,
+    [Parameter(Mandatory = $true)][string]$BackendBaseUrl,
+    [int]$BrowserPort = 0,
+    [int]$ScenarioAttempts = 3
+  )
+
+  $lastError = $null
+  for ($attempt = 1; $attempt -le $ScenarioAttempts; $attempt++) {
+    try {
+      Sync-AdminBootstrapExpectation -BackendBaseUrl $BackendBaseUrl
+      $env:E2E_SCENARIOS = $ScenarioName
+      & (Join-Path $PSScriptRoot 'run-cdp-smoke.ps1') `
+        -Port $BrowserPort `
+        -Command @('node', './scripts/run-playwright-cdp-e2e.mjs')
+      $lastError = $null
+      break
+    } catch {
+      $lastError = $_
+      if ($attempt -ge $ScenarioAttempts) {
+        throw
+      }
+      $retryReason = if ($_.Exception -and $_.Exception.Message) { $_.Exception.Message } else { $_ | Out-String }
+      Write-Host "playwright-cdp scenario retry [$ScenarioName]: restarting browser and rerunning attempt $($attempt + 1) :: $retryReason"
+      Start-Sleep -Seconds 1
+    } finally {
+      Remove-Item Env:E2E_SCENARIOS -ErrorAction SilentlyContinue
+    }
+  }
+
+  if ($lastError) {
+    throw $lastError
+  }
+}
+
 function Start-ManagedProcess {
   param(
     [Parameter(Mandatory = $true)][string]$Name,
@@ -309,36 +378,53 @@ try {
 
   Push-Location $frontendRoot
   try {
-    $lastError = $null
-    $suiteAttempts = 3
-    if ($env:E2E_SUITE_ATTEMPTS) {
-      $parsedSuiteAttempts = 0
-      if ([int]::TryParse($env:E2E_SUITE_ATTEMPTS, [ref]$parsedSuiteAttempts) -and $parsedSuiteAttempts -gt 0) {
-        $suiteAttempts = $parsedSuiteAttempts
-      }
+    $scenarioIsolationEnabled = $true
+    if ($env:E2E_SCENARIO_ISOLATION -eq '0') {
+      $scenarioIsolationEnabled = $false
     }
 
-    for ($attempt = 1; $attempt -le $suiteAttempts; $attempt++) {
-      try {
-        Sync-AdminBootstrapExpectation -BackendBaseUrl $backendBaseUrl
-        & (Join-Path $PSScriptRoot 'run-cdp-smoke.ps1') `
-          -Port $BrowserPort `
-          -Command @('node', './scripts/run-playwright-cdp-e2e.mjs')
-        $lastError = $null
-        break
-      } catch {
-        $lastError = $_
-        if ($attempt -ge $suiteAttempts) {
-          throw
+    $suiteAttempts = Get-PositiveIntegerFromEnv -Name 'E2E_SUITE_ATTEMPTS' -DefaultValue 3
+    $scenarioAttempts = Get-PositiveIntegerFromEnv -Name 'E2E_SCENARIO_ATTEMPTS' -DefaultValue $suiteAttempts
+
+    if ($scenarioIsolationEnabled) {
+      Sync-AdminBootstrapExpectation -BackendBaseUrl $backendBaseUrl
+      $scenarioNames = Get-PlaywrightScenarioNames
+      if ($scenarioNames.Count -eq 0) {
+        throw 'no Playwright CDP scenarios were selected for execution'
+      }
+
+      Write-Host "playwright-cdp isolated scenarios: $($scenarioNames -join ', ')"
+      foreach ($scenarioName in $scenarioNames) {
+        Invoke-IsolatedPlaywrightScenario `
+          -ScenarioName $scenarioName `
+          -BackendBaseUrl $backendBaseUrl `
+          -BrowserPort $BrowserPort `
+          -ScenarioAttempts $scenarioAttempts
+      }
+    } else {
+      $lastError = $null
+      for ($attempt = 1; $attempt -le $suiteAttempts; $attempt++) {
+        try {
+          Sync-AdminBootstrapExpectation -BackendBaseUrl $backendBaseUrl
+          & (Join-Path $PSScriptRoot 'run-cdp-smoke.ps1') `
+            -Port $BrowserPort `
+            -Command @('node', './scripts/run-playwright-cdp-e2e.mjs')
+          $lastError = $null
+          break
+        } catch {
+          $lastError = $_
+          if ($attempt -ge $suiteAttempts) {
+            throw
+          }
+          $retryReason = if ($_.Exception -and $_.Exception.Message) { $_.Exception.Message } else { $_ | Out-String }
+          Write-Host "playwright-cdp suite retry: restarting browser and rerunning attempt $($attempt + 1) :: $retryReason"
+          Start-Sleep -Seconds 1
         }
-        $retryReason = if ($_.Exception -and $_.Exception.Message) { $_.Exception.Message } else { $_ | Out-String }
-        Write-Host "playwright-cdp suite retry: restarting browser and rerunning attempt $($attempt + 1) :: $retryReason"
-        Start-Sleep -Seconds 1
       }
-    }
 
-    if ($lastError) {
-      throw $lastError
+      if ($lastError) {
+        throw $lastError
+      }
     }
   } finally {
     Pop-Location
@@ -351,6 +437,8 @@ try {
     Remove-Item Env:E2E_EXTERNAL_WEB_SERVER -ErrorAction SilentlyContinue
     Remove-Item Env:E2E_BASE_URL -ErrorAction SilentlyContinue
     Remove-Item Env:E2E_API_BASE_URL -ErrorAction SilentlyContinue
+    Remove-Item Env:E2E_LIST_SCENARIOS -ErrorAction SilentlyContinue
+    Remove-Item Env:E2E_SCENARIOS -ErrorAction SilentlyContinue
     Remove-Item Env:E2E_SMTP_CAPTURE_FILE -ErrorAction SilentlyContinue
   }
 } finally {