Content fingerprint of an authored definition: the canonical JSON of its
content, hashed. Stamped on the deployed document (DeployedDefinition)
and pinned on every instance, so a redeploy of identical content is a no-op
and a definition that drifted from what an instance pinned is detectable.
Advisory, like every engine check (the lake is the only enforcement point):
FNV-1a is a fast, deterministic, dependency-free, isomorphic digest — enough
to detect honest change and drift, not a tamper-proof seal. Kept synchronous
so the pure planning path needs no await.
Content fingerprint of an authored definition: the canonical JSON of its content, hashed. Stamped on the deployed document (DeployedDefinition) and pinned on every instance, so a redeploy of identical content is a no-op and a definition that drifted from what an instance pinned is detectable.
Advisory, like every engine check (the lake is the only enforcement point): FNV-1a is a fast, deterministic, dependency-free, isomorphic digest — enough to detect honest change and drift, not a tamper-proof seal. Kept synchronous so the pure planning path needs no
await.