Unannotated ports pass compilation check but cannot be accessed within filament

[UnsignedByte]

Ports can be defined without lifetimes due to the unannotated port feature, but internally are stored differently which leads to hard-to-diagnose behavior.

The following example passes frontend parsing but doesn't compile:

comp main<G: 1>(
    in: 32
) -> (
  @[G, G+1] out: 32
) {
  out = in;
}

Error:

error: undefined port name: in
  ┌─ tests/compile/unannotated-port.fil:8:9
  │
8 │   out = in;
  │         ^^ unknown port

Compilation failed with 1 errors.
Run with --show-models to generate assignments for failing constraints.

Could possibly either add an error for defining unannotated ports or redefine behavior for better functionality (I.E. always-alive ports).