Stage E1 / CONV-05 / INT-12: emit known-good + known-bad fixture corpus into typed-wasm cross_compat (C5.1) #562

TYPED-WASM-ROADMAP.adoc:311-331; TECH-DEBT CONV-05 row. typed-wasm landed the harness side (cross_compat_real.rs + 4 real affinescript-emitted fixture pairs @ 21edc15, their PR #81) — affinescript docs still call this 'not yet shipped' (TYPED-WASM-INTERFACE.adoc:274-277, stale). Residual here: (1) known-BAD fixture corpus (verifier must reject), (2) regeneration workflow on the affinescript side, (3) refresh the stale doc rows. Coordination: hyperpolymath/typed-wasm#35 (L13 mirror + fixture corpus ask). This is the Stage-E exit-criterion bridge — mechanized agreement proofs live in typed-wasm, fed by these fixtures. Part of the v1-readiness ledger.