livrare.ps1: fisierul de mesaj fara BOM

Out-File -Encoding utf8 in PS 5.1 scrie BOM, care ajungea ca prim caracter in
mesajul de commit (ex. un mesaj despre "sync SVN"). Se scrie cu
[IO.File]::WriteAllText si UTF8Encoding $false.

Nota in scripturi-uzuale.md: mesajele catre git/svn din PowerShell trec prin
fisier, UTF-8 fara BOM, LF.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014sNn6dmAimtyXkDU4frJrh

utile/livrare.ps1

@@ -386,7 +386,9 @@ try {
     $mesajDir = Join-Path ([System.IO.Path]::GetTempPath()) ('livrare_' + [guid]::NewGuid().ToString('N'))
     New-Item -ItemType Directory -Path $mesajDir | Out-Null
     $mesajFile = Join-Path $mesajDir 'mesaj_commit.txt'
-    $Mesaj | Out-File -FilePath $mesajFile -Encoding utf8
+    # UTF8Encoding($false): fara BOM - Out-File -Encoding utf8 scrie BOM in PS 5.1, iar git
+    # il baga in mesajul de commit ca prim caracter (U+FEFF) daca-l citim cu -F.
+    [System.IO.File]::WriteAllText($mesajFile, $Mesaj, (New-Object System.Text.UTF8Encoding $false))
 
     $exitCode += (Comite-Si-Impinge $ProjectRoot 'proiect' $FaraPush $mesajFile)