Problem

NLS language semantics are currently entangled with Python emitter quirks. The 'language' is effectively a Python macro system, not an independent language with its own semantics.

Acceptance Criteria

• Defined IR (intermediate representation) between parser/resolver and emitters
• Python emitter consumes IR, not raw AST
• TS and Rust emitters (feat: TypeScript target #20, feat: Rust target #24) also consume same IR
• Language spec can be validated against IR independently of any backend
• Emitter plugins can be authored without touching core parser/resolver

Why This Blocks v1.0

A production language platform must be separable from its implementation backend. This is the architectural gate for multi-target and long-term language stability.