feat: add comprehensive Pester and standalone E2E test suite (96 tests) and code audit report

Modules/UserResolverService.ps1

@@ -13,12 +13,13 @@ function Parse-MultiUserInput {
     param([string]$RawInput)
 
     if ([string]::IsNullOrWhiteSpace($RawInput)) {
-        return @()
+        return ,@()
     }
 
     # 쉼표, 세미콜론, 줄바꿈, 탭, 공백 등 모든 구분자로 분리
     $tokens = $RawInput -split "[\r\n,;\t]+" | ForEach-Object { $_.Trim() } | Where-Object { $_ -ne "" }
-    return @($tokens | Select-Object -Unique)
+    $uniqueTokens = @($tokens | Select-Object -Unique)
+    return ,$uniqueTokens
 }
 
 function Resolve-UsersWithAmbiguityCheck {
@@ -39,11 +40,28 @@ function Resolve-UsersWithAmbiguityCheck {
         [PSCustomObject]@{ SamAccountName = "swjung"; DisplayName = "정수원"; Department = "인사기획팀"; Title = "차장"; Mail = "swjung@corp.local"; EmpId = "EMP1006" }
     )
 
+    $pool = $allPool
+    if ($Config -and $Config.ActiveDirectory -and [bool]$Config.ActiveDirectory.UseLive -and (Get-Command Get-ADUserList -ErrorAction SilentlyContinue)) {
+        try {
+            $liveUsers = Get-ADUserList -Config $Config
+            if ($liveUsers -and $liveUsers.Count -gt 0) {
+                $pool = $liveUsers
+            }
+        } catch {
+            Write-Warning "Live AD 사용자 풀 조회 실패, 기본 풀을 사용합니다: $($_.Exception.Message)"
+        }
+    }
+
     $resolvedResults = [System.Collections.Generic.List[PSCustomObject]]::new()
 
-    foreach ($token in $Tokens) {
+    foreach ($rawToken in $Tokens) {
+        if ([string]::IsNullOrWhiteSpace($rawToken)) {
+            continue
+        }
+        $token = $rawToken.Trim()
+
         # 1. SamAccountName 정확 일치 우선 검색
-        $matchById = @($allPool | Where-Object { $_.SamAccountName -ieq $token })
+        $matchById = @($pool | Where-Object { $_.SamAccountName -ieq $token })
         if ($matchById.Count -eq 1) {
             $u = $matchById[0]
             $resolvedResults.Add([PSCustomObject]@{
@@ -64,8 +82,11 @@ function Resolve-UsersWithAmbiguityCheck {
             continue
         }
 
-        # 2. 이름(DisplayName) 일치 검색 (동명이인 판정)
-        $matchByName = @($allPool | Where-Object { $_.DisplayName -ieq $token -or $_.DisplayName -like "*$token*" })
+        # 2. 이름(DisplayName) 일치 검색 (동명이인 판정 - 와일드카드 안전 처리)
+        $matchByName = @($pool | Where-Object {
+            $_.DisplayName -ieq $token -or
+            ($_.DisplayName -and ($_.DisplayName.IndexOf($token, [System.StringComparison]::OrdinalIgnoreCase) -ge 0))
+        })
         if ($matchByName.Count -eq 1) {
             $u = $matchByName[0]
             $resolvedResults.Add([PSCustomObject]@{
@@ -124,5 +145,5 @@ function Resolve-UsersWithAmbiguityCheck {
         }
     }
 
-    return $resolvedResults.ToArray()
+    return ,$resolvedResults.ToArray()
 }