feat: Add maintenance scripts and testing utilities

- Added password management utilities for user administration
- Added PowerShell scripts for testing attachment endpoints
- Enhanced development and testing workflow capabilities
- Completed v1.4.0 with all maintenance tools included"

test_attachments_endpoint.ps1

@@ -0,0 +1,45 @@
+# Test script para attachments endpoint
+Write-Host "=== Testing Attachments Endpoint ===" -ForegroundColor Cyan
+
+# 1. Login
+$body = '{"email":"admin@aduanasoft.com","password":"admin123","tenant_slug":"aduanasoft"}'
+try {
+    $login = Invoke-RestMethod -Uri "http://localhost:8000/v1/auth/login" -Method POST -Body $body -ContentType "application/json"
+    Write-Host "[OK] Login exitoso" -ForegroundColor Green
+    
+    $token = $login.access_token
+    $tenantId = $login.user.tenant_id
+    
+    Write-Host "Token: $($token.Substring(0,20))..." -ForegroundColor Gray
+    Write-Host "Tenant ID: $tenantId" -ForegroundColor Gray
+    
+    # 2. Test attachments endpoint
+    $headers = @{
+        "Authorization" = "Bearer $token"
+        "X-Tenant-ID" = $tenantId
+    }
+    
+    $url = "http://localhost:8000/v1/tickets/68eaf0fe-b5c3-4d42-9b36-895b439be583/attachments"
+    Write-Host "`nProbando GET $url" -ForegroundColor Yellow
+    
+    try {
+        $response = Invoke-WebRequest -Uri $url -Headers $headers -Method GET
+        Write-Host "[OK] Status Code: $($response.StatusCode)" -ForegroundColor Green
+        
+        $data = $response.Content | ConvertFrom-Json
+        Write-Host "[OK] Attachments encontrados: $($data.Count)" -ForegroundColor Green
+        
+        if ($data.Count -gt 0) {
+            $data | Format-Table id, original_filename, file_size
+        } else {
+            Write-Host "  (No hay attachments para este ticket)" -ForegroundColor Gray
+        }
+        
+    } catch {
+        Write-Host "[ERROR] En request: $($_.Exception.Message)" -ForegroundColor Red
+        Write-Host "Status Code: $($_.Exception.Response.StatusCode.value__)" -ForegroundColor Red
+    }
+    
+} catch {
+    Write-Host "[ERROR] En login: $($_.Exception.Message)" -ForegroundColor Red
+}