Update documentation with new 2025 threat scenarios

[joris-decombe]

Summary

Updates project documentation to reflect the new scenarios added in v1.2.0.

Changes

README.md

• ✅ Update feature list: 3 → 6 scenarios
• ✅ Add multi-language support to features
• ✅ Group scenarios into two categories:
  • NCSC NZ Official Scenarios (3 original)
  • 2025 Real-World Incident Scenarios (3 new)
• ✅ Add detailed descriptions for the 3 new scenarios

CLAUDE.md

• ✅ Update scenario list with all 6 scenarios
• ✅ Add 2025 scenarios with references to real incidents
• ✅ Update "Adding custom scenarios" instructions to include i18n steps

Details

The documentation now accurately reflects:

• Total of 6 scenarios available
• Clear categorization: Official NCSC vs 2025 real-world scenarios
• Full descriptions of new scenarios (Deepfake CFO, Poisoned Package, Hypervisor Ransomware)
• Real-world incident attribution (Arup, XZ Utils, ESXiArgs/Akira)

Related

• Follows v1.2.0 release (PR Release v1.2.0 - Add 2025 threat scenarios #3)
• Complements feature PR Add 2025 threat scenarios based on real-world incidents #2 that added the scenarios