- D-3: inline the serde-layer check into the renamed
serde_rejects_unknown_substrate_value; delete the overpromising
jsonschema_valid helper (the registry's real schema gate stays
pinned end-to-end by the integration probes)
- D-4: trim the stale Unreleased preamble to a one-liner (written
before the six graduation implementation commits landed)
Verified: cargo fmt --check; cargo clippy --all-targets -D warnings;
cargo test (86 + 2 doc-tests) green
glm-5.3-flash
f7dff25f9d