Diamond contract review

[Halima-1]

@Timidan

[Grems247-ZR]

Diamond upgrade review checklist:

1. Selector conflicts: Verify new facet selectors do not collide with existing ones
2. Storage layout: Use forge inspect to validate storage consistency across facets
3. _init safety: Diamond Cut init functions must be reentrancy-safe
4. Events: DiamondCut event emission is critical for off-chain indexing

For static analysis: slither + aderyn

Also built an AI contract review tool (legal contracts, not SC): https://github.com/Grems247-ZR/ai-contract-review