Single-iter milestone closing the post-milestone-24 follow-up named
in docs/roadmap.md lines 80–90 and DESIGN.md §"Polymorphic print"
lines 1990–1992. Migrates the 98 examples/*.ail fixtures from
(do io/print_int|bool|float x) to (app print x), deletes the three
per-type effect-op builtins + codegen arms + tests, and sweeps the
seven DESIGN.md sites that reference the retired ops.
§C4 decides the bench-latency-fixture carve-out question (option a:
migrate everything, ratify any latency-baseline drift as part of the
milestone; option b's carve-out would defeat the milestone's
premise).
Grounding-check PASS — all seven load-bearing assumptions
ratified by named workspace tests.
Brummel
68bab007c8