Re-brainstorm of milestone 23 after the original spec retired in
iter gc.1. The original silently assumed polymorphic free fns are
mono-specialised parallel to class methods; iter 23.4 BLOCKED three
times on that seam. Revised spec corrects the architecture by
committing to a unified typecheck-time mono pass (B1) — one
specialiser for all Type::Forall Defs, codegen-time
lower_polymorphic_call retired in same iter. First real run of the
grounding-check agent (Step 7.5) shipped in gc.1: PASS, 15
assumptions ratified.
Brummel
d3317358ce