data/protocol.md

Phish fixture protocol

• Seed: 3
• Generator: src/generator.py
• Hosts use the reserved .example TLD only
• URLs in fixtures are never live targets
• Attachments are fake PDF bytes and are not executed by the demo
• Authentication-Results values are copied strings for the untrusted-header test
• Split key: (campaign_id, template_id, sender_group)