ci: version from the tag or the commits since it; dev images from main gated on tests; recognise -dev. tags [CI SKIP]

ci/package-cross-platform.ps1

@@ -10,10 +10,10 @@ if (-not $env:GITEA_TOKEN) {
 $version = $Matches[1]
 $root = Split-Path -Parent $PSScriptRoot
 $backend = Join-Path $root 'backend'
-$projectVersion = [regex]::Match((Get-Content (Join-Path $backend 'Directory.Build.props') -Raw), '<Version>([^<]+)</Version>').Groups[1].Value
-if ($version -ne $projectVersion) {
-    throw "Tag version $version does not match project version $projectVersion."
-}
+# 版本取自 tag：写进工作区的 Directory.Build.props（仓库里的 <Version> 只是占位，发版不用再提交 bump）
+$propsPath = Join-Path $backend 'Directory.Build.props'
+$props = Get-Content $propsPath -Raw
+Set-Content -LiteralPath $propsPath -Value ([regex]::Replace($props, '<Version>[^<]*</Version>', "<Version>$version</Version>")) -NoNewline
 
 $tarProject = Join-Path $PSScriptRoot 'MoShiro.Tar\MoShiro.Tar.csproj'
 $tarTool = Join-Path $PSScriptRoot 'MoShiro.Tar\bin\Release\net10.0\MoShiro.Tar.dll'