CONVERGENCE_SCORECARD.md

Shared-Infrastructure Consistency Lint

Generated by tools/convergence/convergence_report.py.

What this is. A static lint that verifies each backend emitter references the shared planning/lowering helpers and gates (field-step ordering, union-tag validation, lowered-contract validation, and so on). A shared mark means the marker for that class is present in the emitter source: it certifies infrastructure consistency, not runtime behavioral equivalence. Behavioral equivalence is enforced separately: emitted step order by the emit-order verifier (tools/convergence/emit_order_verifier.py, ctest llvmdsdl-emit-order-verifier), which compares each string backend's abstract serialize/deserialize op trace per (type, direction) against the equivalence class proven safe by the Dafny oracle (spec/dafny/CyphalSerdes.dfy); and wire bytes by the parity and malformed-input gates, which consume executed test pass/fail. Read each number here as markers present, not as a correctness proof or a convergence guarantee.

Summary

Backend	Markers present	Classes shared / total
c	100	14 / 14
cpp	100	14 / 14
go	100	14 / 14
python	100	14 / 14
rust	100	14 / 14
ts	100	14 / 14

Project floor (minimum markers-present score across backends): 100

Per-Backend Classifications

c

Semantic class	Status
Field step ordering	shared
Union tag mask and validation	shared
Scalar cast/normalize and sign extension	shared
Variable array prefix normalize and length validation	shared
Fixed array cardinality validation	shared
Delimited payload header validation	shared
Section capacity pre-check	shared
Alignment/padding orchestration	shared
Malformed-input diagnostic category text	shared
Lowered contract schema/version validation	shared
Helper-binding completeness gates	shared
Verifier-first invariant enforcement	shared
Contract-v2 wire-program usage	shared
Fallback-free semantic execution gates	shared

cpp

Semantic class	Status
Field step ordering	shared
Union tag mask and validation	shared
Scalar cast/normalize and sign extension	shared
Variable array prefix normalize and length validation	shared
Fixed array cardinality validation	shared
Delimited payload header validation	shared
Section capacity pre-check	shared
Alignment/padding orchestration	shared
Malformed-input diagnostic category text	shared
Lowered contract schema/version validation	shared
Helper-binding completeness gates	shared
Verifier-first invariant enforcement	shared
Contract-v2 wire-program usage	shared
Fallback-free semantic execution gates	shared

go

Semantic class	Status
Field step ordering	shared
Union tag mask and validation	shared
Scalar cast/normalize and sign extension	shared
Variable array prefix normalize and length validation	shared
Fixed array cardinality validation	shared
Delimited payload header validation	shared
Section capacity pre-check	shared
Alignment/padding orchestration	shared
Malformed-input diagnostic category text	shared
Lowered contract schema/version validation	shared
Helper-binding completeness gates	shared
Verifier-first invariant enforcement	shared
Contract-v2 wire-program usage	shared
Fallback-free semantic execution gates	shared

python

Semantic class	Status
Field step ordering	shared
Union tag mask and validation	shared
Scalar cast/normalize and sign extension	shared
Variable array prefix normalize and length validation	shared
Fixed array cardinality validation	shared
Delimited payload header validation	shared
Section capacity pre-check	shared
Alignment/padding orchestration	shared
Malformed-input diagnostic category text	shared
Lowered contract schema/version validation	shared
Helper-binding completeness gates	shared
Verifier-first invariant enforcement	shared
Contract-v2 wire-program usage	shared
Fallback-free semantic execution gates	shared

rust

Semantic class	Status
Field step ordering	shared
Union tag mask and validation	shared
Scalar cast/normalize and sign extension	shared
Variable array prefix normalize and length validation	shared
Fixed array cardinality validation	shared
Delimited payload header validation	shared
Section capacity pre-check	shared
Alignment/padding orchestration	shared
Malformed-input diagnostic category text	shared
Lowered contract schema/version validation	shared
Helper-binding completeness gates	shared
Verifier-first invariant enforcement	shared
Contract-v2 wire-program usage	shared
Fallback-free semantic execution gates	shared

ts

Semantic class	Status
Field step ordering	shared
Union tag mask and validation	shared
Scalar cast/normalize and sign extension	shared
Variable array prefix normalize and length validation	shared
Fixed array cardinality validation	shared
Delimited payload header validation	shared
Section capacity pre-check	shared
Alignment/padding orchestration	shared
Malformed-input diagnostic category text	shared
Lowered contract schema/version validation	shared
Helper-binding completeness gates	shared
Verifier-first invariant enforcement	shared
Contract-v2 wire-program usage	shared
Fallback-free semantic execution gates	shared