- **Architecture:** Split `IScopeDescriptor` into `IScopeLayout` (Binder/Structure) and immutable `IScopeDescriptor` (Runtime/Types).
- **Binder:** Now produces `IScopeLayout` via `IScopeBuilder`. Restored Upvalue tracking and Lambda nesting detection.
- **TypeChecker:** Introduced `TTypeContext` to track types during traversal. Now produces the final `IScopeDescriptor`.
- **Evaluator:** Adapted to new `ILambdaExpressionNode` structure.
- **Fixes:** Resolved `Scope depth mismatch` in TypeChecker and `AccessViolation` in Evaluator due to lost parent scopes.
Michael Schimmel