Module interp 

Tree-walking interpreter: special forms, macro expansion, destructuring, and function application.

Environment construction lives in crate::runtime; build one with Runtime::builder().execution_mode(ExecutionMode::TreeWalk).

Modules

apply

Function application and the recur trampoline.

arity

destructure

Sequential and associative destructuring for let*, fn*, and loop*.

eval

Top-level eval dispatcher and form-to-value conversion.

macros

Macro expansion pipeline.

special

Special form evaluators.

syntax_quote

Syntax-quote (backtick) expansion.

versioned

Versioned symbol resolution — tree-walker entry point.