The C# reference signs a transcript over a *constructed* route, and the
constructors clean on the way in: `CultMeshAuthorityRoute.Clean` trims each
protocol id, drops the blank ones, keeps one of each ordinally and sorts
ordinally; `RequireNonEmpty` trims the runtime id and endpoint; `Require`
trims the provider key id and coordinates; `CultMeshRouteCertificate` trims
the Odin key id; a blank generation becomes the runtime id and endpoint
joined by "@". TypeScript cleaned none of it and transcribed the caller's
string, so a route C# signed and accepted was refused here the moment any
field carried padding or a duplicate.
Soul's tamper loop is the evidence: C# accepted a duplicated protocol id, a
padded generation and a padded Odin key id against the committed vector's own
signature, and TypeScript refused all three. The test now reruns those, plus a
padded protocol id, a blank one, a reversed list, a padded endpoint and a
padded provider key id, against the C#-written vector's signature. A padded
Odin key id must also find its root, so the trust map keys on the trimmed id
as the C# dictionary does.
`verseId` is left alone on purpose: it is not a route field, and
`CanonicalRoute` passes the caller's string into `Canonical` untrimmed. The
test pins that too.
`protocolId ?? "cultmesh.documents.v1"` is gone. A C# route with no protocol
ids is `Array.Empty<string>()` and transcribes as the empty string; reading
the handshake's `protocolId` as a one-element list wrote bytes the reference
never writes. `canonicalSession` matches its C# counterpart the other way:
it cleans nothing on the request, because the handshake message is what the
wire carried, and only the endpoint is cleaned, because the one C# passes is
`Route.Endpoint`.
Mutations: the dedupe removed, the blank-id filter removed, the generation
trim removed, the provider key id trim removed, and the Odin key id trim
removed from the lookup -- each killed by its test.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
c4c2330805