ADR 11: Light client extraction

[hu55a1n1]

Description

An ADR for light client extraction by removal of Any* enums and replacing them with trait objects.

Rendered

---

PR author checklist:

• [x] Added changelog entry, using unclog.
• [ ] Added tests: integration (for Hermes) or unit/mock tests (for modules).
• [ ] Linked to GitHub issue.
• [ ] Updated code comments and documentation (e.g., docs/).

Reviewer checklist:

• [ ] Reviewed Files changed in the GitHub PR explorer.
• [ ] Manually tested (in case integration/unit/mock tests are absent).