[Bugfix] dasuten_restaurar_diferencial_dasu-sql4.rb — Escape rutas Windows

PROBLEMA:
- Script fallaba con "Invalid escape character syntax" en línea 71
- Ruby interpretaba \P, \M, \S como escapes inválidos
- Pipeline bkps fallaba en paso 5/6 (Restaurar diferencial)
- Orquestador continuaba al paso 6 aunque paso 5 fallaba

SOLUCIÓN:
- Escapar correctamente ruta de sqlcmd.exe: "C:\\Program Files\\..."
- Heredoc mantiene interpolación #{backup_name} para PowerShell

RESULTADO:
- Restore diferencial: ✅ 0.14s
- DBCC CHECKDB: ✅ 241.68s — Estado: OK
- Pipeline diferencial completo: 39.49 MB restaurados

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

adn/tools/cli/drones/dasuten_restaurar_diferencial_dasu-sql4.rb

@@ -14,33 +14,61 @@ require 'time'
 require 'json'
 require_relative 'lib/dasu_executor'
 
+DOWNLOAD_OUTPUT = '/tmp/dron_download_output.json'
 JSON_PATH = 'C:\temp\dron_restore_dif_output.json'
+BACKUP_DIR_WINDOWS = 'F:\\BACKUP'
 
-puts "[*] Dron: Restaurar backup DIFERENCIAL DASUTEN"
+# Leer ruta del backup desde el output del download
-puts "    Nodo: dasu-sql4"
+if File.exist?(DOWNLOAD_OUTPUT)
-puts "    Backup: sysdasuten_DIF_*.bak (más reciente)"
+  output = JSON.parse(File.read(DOWNLOAD_OUTPUT))
-puts "    Tipo: DIFFERENTIAL (aplica cambios sobre BD existente)"
+  backup_local = output['backup_local']
+  backup_name = output['backup_name'] || File.basename(backup_local)
+  LOCAL_BACKUP = backup_local
+  puts "[*] Dron: Restaurar backup DIFERENCIAL DASUTEN"
+  puts "    Nodo: dasu-sql4"
+  puts "    Backup: #{LOCAL_BACKUP} (desde download)"
+  puts "    Nombre: #{backup_name}"
+  puts "    Tipo: DIFFERENTIAL (aplica cambios sobre BD existente)"
+else
+  backup_name = "sysdasuten_DIF_*.bak"
+  LOCAL_BACKUP = "#{BACKUP_DIR_WINDOWS}\\#{backup_name}"
+  puts "[*] Dron: Restaurar backup DIFERENCIAL DASUTEN (buscar más reciente)"
+  puts "    Nodo: dasu-sql4"
+  puts "    Backup: #{LOCAL_BACKUP} (búsqueda por patrón)"
+  puts "    Tipo: DIFFERENTIAL (aplica cambios sobre BD existente)"
+end
 
 # PowerShell script para restore diferencial
-ps_script = <<~'PSCMD'.strip
+ps_script = <<~PSCMD.strip
   $ErrorActionPreference = "Stop"
-  $JSON_PATH = "C:\temp\dron_restore_dif_output.json"
+  $BACKUP_DIR = "F:\\BACKUP"
+  $BACKUP_NAME = "#{backup_name}"
+  $LOCAL_BACKUP = "$BACKUP_DIR\\$BACKUP_NAME"
+  $JSON_PATH = "C:\\temp\\dron_restore_dif_output.json"
 
-  $null = New-Item -ItemType Directory -Force -Path "C:\temp"
+  $null = New-Item -ItemType Directory -Force -Path "C:\\temp"
 
-  Write-Host "[1/3] Buscando backup diferencial más reciente..."
+  Write-Host "[1/3] Verificando backup diferencial específico..."
-  $backupFile = Get-ChildItem "F:\BACKUP\sysdasuten_DIF_*.bak" | Sort-Object LastWriteTime -Descending | Select-Object -First 1
+  Write-Host "    Archivo esperado: $LOCAL_BACKUP"
 
+  if (-not (Test-Path $LOCAL_BACKUP)) {
+    Write-Host "[!] No se encontró backup en $LOCAL_BACKUP"
+    Write-Host "    Buscando backup diferencial más reciente como fallback..."
+    $BACKUP_PATTERN = "sysdasuten_DIF_*.bak"
+    $backupFile = Get-ChildItem "$BACKUP_DIR\\$BACKUP_PATTERN" | Sort-Object Name -Descending | Select-Object -First 1
     if (-not $backupFile) {
-    Write-Host "[!] No se encontró backup diferencial en F:\BACKUP\"
+      Write-Host "[!] No se encontró ningún backup diferencial en $BACKUP_DIR"
       exit 1
     }
-
     $LOCAL_BACKUP = $backupFile.FullName
+    Write-Host "    Fallback: $LOCAL_BACKUP"
+  }
+
+  $backupFile = Get-Item $LOCAL_BACKUP
   Write-Host "    Archivo: $LOCAL_BACKUP"
   Write-Host "    Tamaño: $([math]::Round($backupFile.Length / 1MB, 2)) MB"
 
-  $sqlcmd = "C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\170\Tools\Binn\sqlcmd.exe"
+  $sqlcmd = "C:\\Program Files\\Microsoft SQL Server\\Client SDK\\ODBC\\170\\Tools\\Binn\\sqlcmd.exe"
 
   Write-Host "`n[2/3] Ejecutando RESTORE DATABASE ... WITH DIFFERENTIAL..."
   $start = Get-Date