refactor: 公共面补 BakNRet 前缀，产品名大小写全仓统一

16 个没有前缀的公共函数补上 BakNRet（Write-Log → Write-BakNRetLog、Resolve-BackupEntry →
Resolve-BakNRetBackupEntry、Find-ChildDirectoryByName → Find-BakNRetChildDirectoryByName 等），
另外把全仓的 Baknret 统一成 BakNRet（47 个文件、940 处、65 个定义文件重命名）。

这不是审美问题：静态分析直接拓出一条实据 —— Write-Log 与本机某个已装模块导出的命令
**重名**（PSAvoidOverwritingBuiltInCmdlets），而重名的后果是导入两个模块时有一方的命令被
静默遮蔽。补前缀正是这条规则的解法，改名后它归零。

为什么敢做这个规模：PowerShell 的函数名解析大小写不敏感，所以 Baknret → BakNRet 在功能
上是零风险；真正要验证的是 16 个补前缀的调用点，而 276 个断言几乎覆盖了每个函数。另外
"名字与文件名一致"这条不变式有断言盯着（加载器点源的文件集合 vs 磁盘）。

踩到并记下的坑：Windows 文件系统大小写不敏感，所以**只改大小写**的重命名会被 Move-Item
当成同一个文件而静默跳过 —— 同一批里同时改了名字的那 16 个文件却成功了，于是"看起来能跑"。
最后用"先移到临时名、再移到目标名"的两步走解决，判断与替换全部改用显式大小写敏感的形式
（-creplace / -cmatch）。

顺带把名录指纹缓存从 MD5 换成 SHA256（PSAvoidUsingBrokenHashAlgorithms）：它只是缓存键，
没有兼容负担。

验收：test.ps1 9/9 全绿（7 与 5.1）、100 个文件两版解析零错、276 个断言全过、
构建工具仍能合回单文件（3300 行）。

tests/BakNRet.Formats.Tests.ps1

@@ -37,7 +37,7 @@ BeforeAll {
 
     # 见 BakNRet.Tests.ps1 里的说明：本机沙箱禁止 PowerShell 为捕获原生子进程输出建管道，
     # 所以走"临时 .cmd + 文件重定向 + Invoke-ExternalCommand（继承 stdio）"这条路。
-    function Invoke-BaknretScript {
+    function Invoke-BakNRetScript {
         param(
             [Parameter(Mandatory = $true)][string]$Script,
             [hashtable]$Parameters = @{}
@@ -138,7 +138,7 @@ Describe '软件名录：Slot 形状（新契约）' {
     }
 
     It '一个软件多个 Slot：Kind=Multi，Slot 按名排序且说明被保留' {
-        $catalog = Get-SoftwareCatalog -Path $script:FormatCatalog -MaxDepth 3 -NoCache
+        $catalog = Get-BakNRetSoftwareCatalog -Path $script:FormatCatalog -MaxDepth 3 -NoCache
         $catalog['pair'].Kind | Should -Be 'Multi'
         @($catalog['pair'].Slots).Count | Should -Be 2
         (@($catalog['pair'].Slots | ForEach-Object { $_.Name }) -join ',') | Should -Be 'A,B'
@@ -150,7 +150,7 @@ Describe '软件名录：Slot 形状（新契约）' {
 
     It '每个 Slot 都是一个独立的归档项来源（Kind=slot / Origin=catalog）' {
         $entry = ConvertFrom-BackupListLine -Line 'pair'
-        $resolved = Resolve-BackupEntry -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3
+        $resolved = Resolve-BakNRetBackupEntry -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3
         @($resolved.Items).Count | Should -Be 2
         (@($resolved.Items | ForEach-Object { $_.ArchivePath }) -join ',') | Should -Be 'A,B'
         (@($resolved.Items | ForEach-Object { $_.Kind }) -join ',') | Should -Be 'slot,slot'
@@ -161,22 +161,22 @@ Describe '软件名录：Slot 形状（新契约）' {
     }
 
     It 'Slot 级排除写在 Slot 自己身上（相对本 Slot 的归档根）' {
-        $catalog = Get-SoftwareCatalog -Path $script:FormatCatalog -MaxDepth 3 -NoCache
+        $catalog = Get-BakNRetSoftwareCatalog -Path $script:FormatCatalog -MaxDepth 3 -NoCache
         (@($catalog['slotex'].Slots[0].Exclude) -join '|') | Should -Be '!*Cache|logs\'
 
         $entry = ConvertFrom-BackupListLine -Line 'slotex'
-        $resolved = Resolve-BackupEntry -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3
+        $resolved = Resolve-BakNRetBackupEntry -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3
         (@($resolved.Items[0].Exclude) -join '|') | Should -Be '!*Cache|logs\'
         $resolved.HasExcludeOverride | Should -BeFalse
     }
 
     It '数组里"当前不存在"的 Slot 仍然产出归档项（恢复要靠它还原回原位）' {
-        $catalog = Get-SoftwareCatalog -Path $script:FormatCatalog -MaxDepth 3 -NoCache
+        $catalog = Get-BakNRetSoftwareCatalog -Path $script:FormatCatalog -MaxDepth 3 -NoCache
         $catalog['partial'].Kind | Should -Be 'Partial'
         @($catalog['partial'].Missing) | Should -Contain $script:MissingDir
 
         $entry = ConvertFrom-BackupListLine -Line 'partial'
-        $resolved = Resolve-BackupEntry -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3
+        $resolved = Resolve-BakNRetBackupEntry -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3
         @($resolved.Items).Count | Should -Be 2
         @($resolved.Items | ForEach-Object { $_.RealPath }) | Should -Contain $script:MissingDir
         $resolved.Blocking | Should -BeNullOrEmpty       # 源不存在不是致命错误
@@ -184,7 +184,7 @@ Describe '软件名录：Slot 形状（新契约）' {
 
     It '文件 Slot：归档项是文件项（归档里就是名为 Slot 的文件）' {
         $entry = ConvertFrom-BackupListLine -Line 'fileapp'
-        $resolved = Resolve-BackupEntry -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3
+        $resolved = Resolve-BakNRetBackupEntry -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3
         @($resolved.Items).Count | Should -Be 1
         $resolved.Items[0].IsFile | Should -BeTrue
         $resolved.Items[0].ArchivePath | Should -Be 'Cfg'
@@ -193,13 +193,13 @@ Describe '软件名录：Slot 形状（新契约）' {
     }
 
     It '旧的裸字符串 / 字符串数组写法被拒绝（ERROR + 跳过）' {
-        $catalog = Get-SoftwareCatalog -Path $script:FormatCatalog -MaxDepth 3 -NoCache
+        $catalog = Get-BakNRetSoftwareCatalog -Path $script:FormatCatalog -MaxDepth 3 -NoCache
         $catalog.ContainsKey('legacystr') | Should -BeFalse
         $catalog.ContainsKey('legacyarr') | Should -BeFalse
     }
 
     It '旧的 @{ Dirs = @(...) } 写法不再展开，留下 Invalid 与原因' {
-        $catalog = Get-SoftwareCatalog -Path $script:FormatCatalog -MaxDepth 3 -NoCache
+        $catalog = Get-BakNRetSoftwareCatalog -Path $script:FormatCatalog -MaxDepth 3 -NoCache
         $catalog.ContainsKey('legacydirs') | Should -BeTrue
         $catalog['legacydirs'].Kind | Should -Be 'Invalid'
         $catalog['legacydirs'].Error | Should -Not -BeNullOrEmpty
@@ -208,7 +208,7 @@ Describe '软件名录：Slot 形状（新契约）' {
 
     It '多 Slot 的名录条目在清单里仍然按软件名命名归档' {
         $entry = ConvertFrom-BackupListLine -Line 'pair'
-        (Get-ItemArchiveName -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3) | Should -Be 'pair'
+        (Get-BakNRetItemArchiveName -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3) | Should -Be 'pair'
     }
 }
 
@@ -227,7 +227,7 @@ Describe '清单修饰符：新契约格式' {
     It ':: 覆盖 Path：单 Slot 条目直接生效' {
         $entry = ConvertFrom-BackupListLine -Line "solo :: $script:DirB"
         $entry.Overrides.ContainsKey('Path') | Should -BeTrue
-        $resolved = Resolve-BackupEntry -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3
+        $resolved = Resolve-BakNRetBackupEntry -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3
         @($resolved.Items).Count | Should -Be 1
         $resolved.Items[0].ArchivePath | Should -Be 'Only'
         $resolved.Items[0].RealPath | Should -Be $script:DirB
@@ -236,7 +236,7 @@ Describe '清单修饰符：新契约格式' {
 
     It ':: 覆盖遇到多 Slot 条目 -> Blocking（不知道给哪一个，绝不猜）' {
         $entry = ConvertFrom-BackupListLine -Line "pair :: $script:DirB"
-        $resolved = Resolve-BackupEntry -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3
+        $resolved = Resolve-BakNRetBackupEntry -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3
         @($resolved.Items).Count | Should -Be 0
         $resolved.Blocking | Should -Match '不能用一个'
     }
@@ -246,7 +246,7 @@ Describe '清单修饰符：新契约格式' {
         (@($entry.ExcludePatterns) -join '|') | Should -Be 'logs\|!*Cache'
         (@($entry.Includes) -join '|') | Should -Be "Mods:$script:DirB"
 
-        $resolved = Resolve-BackupEntry -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3
+        $resolved = Resolve-BakNRetBackupEntry -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3
         $resolved.HasExcludeOverride | Should -BeTrue
         $resolved.HasIncludeOverride | Should -BeTrue
         @($resolved.Items | ForEach-Object { $_.ArchivePath }) | Should -Contain 'Mods'
@@ -261,13 +261,13 @@ Describe '清单修饰符：新契约格式' {
     }
 
     It ':encrypt / :!encrypt 覆盖名录里的加密默认值' {
-        $base = Resolve-BackupEntry -Entry (ConvertFrom-BackupListLine -Line 'fileapp') -CatalogPath $script:FormatCatalog -MaxDepth 3
+        $base = Resolve-BakNRetBackupEntry -Entry (ConvertFrom-BackupListLine -Line 'fileapp') -CatalogPath $script:FormatCatalog -MaxDepth 3
         $base.Encrypt | Should -BeTrue      # 名录里 Cfg Slot 标了 Encrypt
 
-        $off = Resolve-BackupEntry -Entry (ConvertFrom-BackupListLine -Line 'fileapp :!encrypt') -CatalogPath $script:FormatCatalog -MaxDepth 3
+        $off = Resolve-BakNRetBackupEntry -Entry (ConvertFrom-BackupListLine -Line 'fileapp :!encrypt') -CatalogPath $script:FormatCatalog -MaxDepth 3
         $off.Encrypt | Should -BeFalse
 
-        $on = Resolve-BackupEntry -Entry (ConvertFrom-BackupListLine -Line 'pair :encrypt') -CatalogPath $script:FormatCatalog -MaxDepth 3
+        $on = Resolve-BakNRetBackupEntry -Entry (ConvertFrom-BackupListLine -Line 'pair :encrypt') -CatalogPath $script:FormatCatalog -MaxDepth 3
         $on.Encrypt | Should -BeTrue
     }
 
@@ -278,8 +278,8 @@ Describe '清单修饰符：新契约格式' {
 
         # @pathname 对软件名条目也会改用真实路径命名
         $entry = ConvertFrom-BackupListLine -Line 'pair @pathname'
-        $expected = Get-BackupBaseName -RawPath $script:DirA
-        (Get-ItemArchiveName -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3) | Should -Be $expected
+        $expected = Get-BakNRetBackupBaseName -RawPath $script:DirA
+        (Get-BakNRetItemArchiveName -Entry $entry -CatalogPath $script:FormatCatalog -MaxDepth 3) | Should -Be $expected
     }
 
     It '同一行里重复写同类记号会累积（不静默丢掉前一条规则）' {
@@ -350,14 +350,14 @@ Describe '集成：Slot 布局的打包与恢复' -Skip:(-not ($script:HasSevenZ
         $script:SlotList = Write-ListFile -Path (Join-Path $script:SlotRoot 'list.txt') -Content "appkit`n"
         $script:SlotBackupDir = Join-Path $script:SlotRoot 'Backups'
 
-        $script:SlotBackupRun = Invoke-BaknretScript -Script $script:BackupScript -Parameters @{
+        $script:SlotBackupRun = Invoke-BakNRetScript -Script $script:BackupScript -Parameters @{
             BackupListPath = $script:SlotList
             BackupDir      = $script:SlotBackupDir
             ConfigPath     = $script:SlotConfig
             Force          = $true
             QuietTool      = $true
         }
-        $script:SlotManifest = Read-BaknretManifest -Path (Join-Path $script:SlotBackupDir 'manifest.json')
+        $script:SlotManifest = Read-BakNRetManifest -Path (Join-Path $script:SlotBackupDir 'manifest.json')
         $script:SlotArchive = @(Get-ChildItem -LiteralPath $script:SlotBackupDir -File -Filter *.7z)[0]
     }
 
@@ -367,7 +367,7 @@ Describe '集成：Slot 布局的打包与恢复' -Skip:(-not ($script:HasSevenZ
     }
 
     It '归档顶层就是各个 Slot 名（目录 Slot + 文件 Slot + Include 项）' {
-        $top = @(Get-ArchiveTopLevelNames -ArchivePath $script:SlotArchive.FullName -SevenZip $script:SevenZip)
+        $top = @(Get-BakNRetArchiveTopLevelNames -ArchivePath $script:SlotArchive.FullName -SevenZip $script:SevenZip)
         (@($top | Sort-Object) -join ',') | Should -Be 'Cfg,Data,Extra,Modules'
     }
 
@@ -396,7 +396,7 @@ Describe '集成：Slot 布局的打包与恢复' -Skip:(-not ($script:HasSevenZ
         Remove-Item -LiteralPath (Join-Path $script:SlotRoot 'apps') -Recurse -Force
         Remove-Item -LiteralPath $script:SlotInclude -Recurse -Force
 
-        $run = Invoke-BaknretScript -Script $script:RestoreScript -Parameters @{
+        $run = Invoke-BakNRetScript -Script $script:RestoreScript -Parameters @{
             BackupListPath = $script:SlotList
             BackupDir      = $script:SlotBackupDir
             ConfigPath     = $script:SlotConfig
@@ -422,7 +422,7 @@ Describe '集成：Slot 布局的打包与恢复' -Skip:(-not ($script:HasSevenZ
     }
 
     It '恢复之后 manifest 记下 lastRestoreAt' {
-        $manifest = Read-BaknretManifest -Path (Join-Path $script:SlotBackupDir 'manifest.json')
+        $manifest = Read-BakNRetManifest -Path (Join-Path $script:SlotBackupDir 'manifest.json')
         $manifest.items['appkit'].lastRestoreAt | Should -Not -BeNullOrEmpty
     }
 }
@@ -462,7 +462,7 @@ Describe '集成：旧布局归档的回退恢复' -Skip:(-not ($script:HasSeven
     }
 
     It '归档确实是旧布局：顶层是源目录名而不是 Slot 名' {
-        $top = @(Get-ArchiveTopLevelNames -ArchivePath $script:LegacyArchive -SevenZip $script:SevenZip)
+        $top = @(Get-BakNRetArchiveTopLevelNames -ArchivePath $script:LegacyArchive -SevenZip $script:SevenZip)
         (@($top | Sort-Object) -join ',') | Should -Be $script:LegacyLeaf
     }
 
@@ -471,7 +471,7 @@ Describe '集成：旧布局归档的回退恢复' -Skip:(-not ($script:HasSeven
         # 不能靠 7z 的退出码猜（7z 对不存在的条目同样返回 0）。
         Remove-Item -LiteralPath (Join-Path $script:LegacyDestParent $script:LegacyLeaf) -Recurse -Force -ErrorAction SilentlyContinue
 
-        $run = Invoke-BaknretScript -Script $script:RestoreScript -Parameters @{
+        $run = Invoke-BakNRetScript -Script $script:RestoreScript -Parameters @{
             BackupListPath = $script:LegacyList
             BackupDir      = $script:LegacyBackupDir
             ConfigPath     = $script:LegacyConfig
@@ -490,7 +490,7 @@ Describe '集成：旧布局归档的回退恢复' -Skip:(-not ($script:HasSeven
         $missingList = Write-ListFile -Path (Join-Path $script:LegacyRoot 'missing-list.txt') `
             -Content "oldapp :: $script:LegacyRoot\dest2\Nothing Here`n"
 
-        $run = Invoke-BaknretScript -Script $script:RestoreScript -Parameters @{
+        $run = Invoke-BakNRetScript -Script $script:RestoreScript -Parameters @{
             BackupListPath = $missingList
             BackupDir      = $script:LegacyBackupDir
             ConfigPath     = $script:LegacyConfig
@@ -522,7 +522,7 @@ Describe '集成：归档内路径冲突会被拒绝执行' -Skip:(-not ($script
         $script:RejectConfig = Write-ListFile -Path (Join-Path $script:RejectRoot 'config.psd1') -Content "@{ SoftwareCatalog = '$script:RejectCatalog' }`n"
         $script:RejectBackupDir = Join-Path $script:RejectRoot 'Backups'
 
-        $script:RejectRun = Invoke-BaknretScript -Script $script:BackupScript -Parameters @{
+        $script:RejectRun = Invoke-BakNRetScript -Script $script:BackupScript -Parameters @{
             BackupListPath = $script:RejectList
             BackupDir      = $script:RejectBackupDir
             ConfigPath     = $script:RejectConfig
@@ -538,7 +538,7 @@ Describe '集成：归档内路径冲突会被拒绝执行' -Skip:(-not ($script
     }
 
     It 'manifest 里记下这次是 failed，并带上原因' {
-        $manifest = Read-BaknretManifest -Path (Join-Path $script:RejectBackupDir 'manifest.json')
+        $manifest = Read-BakNRetManifest -Path (Join-Path $script:RejectBackupDir 'manifest.json')
         $record = $manifest.items['collide']
         $record.action | Should -Be 'failed'
         $record.reason | Should -Match '归档内路径冲突'
@@ -568,7 +568,7 @@ Describe '条目从清单里消失后，旧归档必须被点名为孤儿' -Skip
 
         # 第一次：清单里有 my-app
         Write-ListFile -Path $script:OrphanList -Content "my-app`n" | Out-Null
-        $null = Invoke-BaknretScript -Script $script:BackupScript -Parameters @{
+        $null = Invoke-BakNRetScript -Script $script:BackupScript -Parameters @{
             BackupListPath = $script:OrphanList
             BackupDir      = $script:OrphanBackupDir
             ConfigPath     = $script:OrphanConfig
@@ -578,7 +578,7 @@ Describe '条目从清单里消失后，旧归档必须被点名为孤儿' -Skip
 
         # 第二次：把条目从清单里拿掉，归档留在磁盘上
         Write-ListFile -Path $script:OrphanList -Content "# 清单里没有条目了`n" | Out-Null
-        $script:OrphanRun = Invoke-BaknretScript -Script $script:BackupScript -Parameters @{
+        $script:OrphanRun = Invoke-BakNRetScript -Script $script:BackupScript -Parameters @{
             BackupListPath = $script:OrphanList
             BackupDir      = $script:OrphanBackupDir
             ConfigPath     = $script:OrphanConfig
@@ -588,7 +588,7 @@ Describe '条目从清单里消失后，旧归档必须被点名为孤儿' -Skip
 
     It '归档确实还在磁盘上，manifest 里也还留着历史记录' {
         Test-Path -LiteralPath (Join-Path $script:OrphanBackupDir 'my-app.7z') | Should -BeTrue
-        $manifest = Read-BaknretManifest -Path (Join-Path $script:OrphanBackupDir 'manifest.json')
+        $manifest = Read-BakNRetManifest -Path (Join-Path $script:OrphanBackupDir 'manifest.json')
         $manifest.items.Contains('my-app') | Should -BeTrue
     }
 
@@ -610,16 +610,16 @@ Describe 'manifest 一致性：archive 字段只在文件真的存在时才写'
         Set-Content -Encoding UTF8 -LiteralPath (Join-Path $script:SyncRoot 'real.7z') 'x'
 
         $script:SyncManifestPath = Join-Path $script:SyncRoot 'manifest.json'
-        $manifest = Read-BaknretManifest -Path $script:SyncManifestPath
+        $manifest = Read-BakNRetManifest -Path $script:SyncManifestPath
         $manifest.items['real'] = [pscustomobject]@{ archive = 'real.7z'; action = 'backed-up'; source = 'real' }
         $manifest.items['gone'] = [pscustomobject]@{ archive = 'gone.7z'; action = 'missing-source'; source = 'gone' }
         $manifest.items['none'] = [pscustomobject]@{ archive = $null; action = 'missing-source'; source = 'none' }
-        Write-BaknretManifest -Path $script:SyncManifestPath -Manifest $manifest | Out-Null
+        Write-BakNRetManifest -Path $script:SyncManifestPath -Manifest $manifest | Out-Null
     }
 
     It '存在的归档保留 archive，不存在的被清空' {
-        $manifest = Read-BaknretManifest -Path $script:SyncManifestPath
-        $cleared = Sync-BaknretManifestArchive -Manifest $manifest -BackupDir $script:SyncRoot
+        $manifest = Read-BakNRetManifest -Path $script:SyncManifestPath
+        $cleared = Sync-BakNRetManifestArchive -Manifest $manifest -BackupDir $script:SyncRoot
 
         $cleared.Count | Should -Be 1
         $cleared[0] | Should -Be 'gone'
@@ -629,16 +629,16 @@ Describe 'manifest 一致性：archive 字段只在文件真的存在时才写'
     }
 
     It '清空 archive 时保留条目本身的历史（source / action 不动）' {
-        $manifest = Read-BaknretManifest -Path $script:SyncManifestPath
-        $null = Sync-BaknretManifestArchive -Manifest $manifest -BackupDir $script:SyncRoot
+        $manifest = Read-BakNRetManifest -Path $script:SyncManifestPath
+        $null = Sync-BakNRetManifestArchive -Manifest $manifest -BackupDir $script:SyncRoot
         $manifest.items['gone'].source | Should -Be 'gone'
         $manifest.items['gone'].action | Should -Be 'missing-source'
     }
 
     It '人工删掉归档之后再同步一次，记录会被纠正过来' {
         Remove-Item -LiteralPath (Join-Path $script:SyncRoot 'real.7z') -Force
-        $manifest = Read-BaknretManifest -Path $script:SyncManifestPath
-        $cleared = Sync-BaknretManifestArchive -Manifest $manifest -BackupDir $script:SyncRoot
+        $manifest = Read-BakNRetManifest -Path $script:SyncManifestPath
+        $cleared = Sync-BakNRetManifestArchive -Manifest $manifest -BackupDir $script:SyncRoot
 
         $cleared | Should -Contain 'real'
         $manifest.items['real'].archive | Should -BeNullOrEmpty