feat: Add email test script for manual testing

Script sends welcome emails to specified addresses for testing
DKIM/SPF/DMARC configuration.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

scripts/test_email_send.py

@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+"""
+Test wysyłki emaili z noreply@nordabiznes.pl
+Symuluje email powitalny po założeniu konta.
+"""
+import sys
+import os
+
+# Add project root to path
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+from email_service import send_welcome_email, is_configured, init_email_service
+
+def main():
+    # Ensure email service is initialized
+    if not is_configured():
+        print("❌ Email service nie jest skonfigurowany!")
+        print("   Sprawdź zmienne środowiskowe: AZURE_TENANT_ID, AZURE_CLIENT_ID, AZURE_CLIENT_SECRET, MAIL_FROM")
+        return False
+
+    print("✅ Email service skonfigurowany")
+
+    # Test email addresses
+    test_recipients = [
+        ("maciej.pienczyn@inpi.pl", "Maciej (INPI)"),
+        ("maciej.pienczyn@altpi.pl", "Maciej (AltPI)"),
+        ("maciej.pienczyn@gmail.com", "Maciej (Gmail)"),
+    ]
+
+    # Fake verification URL for testing
+    test_verification_url = "https://nordabiznes.pl/verify?token=TEST_TOKEN_123"
+
+    results = []
+
+    for email, name in test_recipients:
+        print(f"\n📧 Wysyłam email testowy do: {email}")
+        success = send_welcome_email(email, name, test_verification_url)
+
+        if success:
+            print(f"   ✅ Wysłano pomyślnie!")
+        else:
+            print(f"   ❌ Błąd wysyłki!")
+
+        results.append((email, success))
+
+    print("\n" + "="*50)
+    print("PODSUMOWANIE:")
+    print("="*50)
+
+    success_count = sum(1 for _, s in results if s)
+    for email, success in results:
+        status = "✅" if success else "❌"
+        print(f"  {status} {email}")
+
+    print(f"\nWysłano: {success_count}/{len(results)}")
+
+    return success_count == len(results)
+
+if __name__ == "__main__":
+    success = main()
+    sys.exit(0 if success else 1)