fix(profile): 修复 starship 初始化脚本处理数组输出的问题

- 将缓存键更新为 v2 版本，避免使用旧缓存
- 正确处理 starship 命令返回的字符串数组，显式拼接换行符
- 添加对 --print-full-init 失败的回退处理
- 确保 continuation prompt 也正确处理数组输出

Author: mudssky

profile/Debug-ProfilePerformance.ps1

@@ -264,12 +264,16 @@ $platformId = if ($IsWindows) { 'win' } elseif ($IsMacOS) { 'macos' } else { 'li
 $cacheDir = Join-Path $profileRoot '.cache'
 if (-not $SkipStarship -and $availableTools.Contains('starship')) {
     $f = Invoke-WithFileCache `
-        -Key "starship-init-powershell-$platformId" `
+        -Key "starship-init-powershell-$platformId-v2" `
         -MaxAge ([TimeSpan]::FromDays(7)) `
         -Generator {
-            $initScript = & starship init powershell --print-full-init
+            $initScriptLines = & starship init powershell --print-full-init 2>$null
+            if ($LASTEXITCODE -ne 0 -or -not $initScriptLines) {
+                $initScriptLines = & starship init powershell
+            }
+            $initScript = ($initScriptLines -join [System.Environment]::NewLine)
             try {
-                $continuationPrompt = & starship prompt --continuation
+                $continuationPrompt = (& starship prompt --continuation) -join [System.Environment]::NewLine
                 if ($continuationPrompt) {
                     $escaped = $continuationPrompt -replace "'", "''"
                     $pattern = 'Set-PSReadLineOption -ContinuationPrompt \(\s*Invoke-Native -Executable .+? -Arguments @\(\s*"prompt",\s*"--continuation"\s*\)\s*\)'

profile/features/environment.ps1

@@ -205,11 +205,18 @@ function Initialize-Environment {
             if ($SkipTools -or $SkipStarship) { return }
             Write-Verbose "初始化 Starship 提示符"
             $cacheDir = Join-Path $profileRoot '.cache'
+            $starshipCacheKey = "starship-init-powershell-$platformId-v2"
             $starshipFile = Invoke-WithFileCache `
-                -Key "starship-init-powershell-$platformId" `
+                -Key $starshipCacheKey `
                 -MaxAge ([TimeSpan]::FromDays(7)) `
                 -Generator {
-                    $initScript = & starship init powershell --print-full-init
+                    # starship init 可能返回 string[]；必须显式按换行拼接，避免后续正则时被 PowerShell 隐式拼接成单行
+                    $initScriptLines = & starship init powershell --print-full-init 2>$null
+                    if ($LASTEXITCODE -ne 0 -or -not $initScriptLines) {
+                        Write-Verbose "starship 不支持 --print-full-init，回退到默认 init 输出"
+                        $initScriptLines = & starship init powershell
+                    }
+                    $initScript = ($initScriptLines -join [System.Environment]::NewLine)
 
                     # Post-processing: 缓存 continuation prompt 输出，避免每次启动 spawn 子进程（~100-150ms）
                     # starship init 输出中包含:
@@ -218,7 +225,7 @@ function Initialize-Environment {
                     #   )
                     # 替换为预先获取的字面量值
                     try {
-                        $continuationPrompt = & starship prompt --continuation
+                        $continuationPrompt = (& starship prompt --continuation) -join [System.Environment]::NewLine
                         if ($continuationPrompt) {
                             # 转义单引号用于嵌入字符串字面量
                             $escaped = $continuationPrompt -replace "'", "''"