fix(runtime): drop the tracker id from the PLUGIN_CONTRACT_VIOLATION why string

`check:doc-authoring`'s cross-package prose-id leg reads every string
literal under packages/** and holds each (file, id) pair to the pinned
baseline; the new row's `why:` string cited the tracker id of the
pre-HTTP ruling and took the file's `#8035` count from 6 pinned to 7
measured. The sentence now names the reasoning the rows above cite
instead of the tracker id, which is what the gate prescribes ("only the
tracker id goes"); the meaning is unchanged and the count reads 6 again.
The `//` comment marker above the row is outside that gate's population
and stays.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ARYe3yQTQCUFm5qPYNgKaJ

Author: claude

packages/runtime/src/dispatcher-error-vocabulary.ts

@@ -768,7 +768,7 @@ export const UNREGISTERED_CODE_SITES: readonly UnregisteredCodeSite[] = [
             + 'any HTTP boundary exists: `ObjectKernel.use()` re-wraps it into a fresh `Error` that the host '
             + 'rethrows and the process aborts on, so no door can answer with it and no door can demote it. '
             + 'Same class as the migration-journal runner refusals and the service-resolution discriminator '
-            + 'above, ruled by the same #8035 reasoning: a composition fact raised pre-HTTP is not wire '
+            + 'above, ruled by the same reasoning those rows cite: a composition fact raised pre-HTTP is not wire '
             + 'vocabulary. The code is repeated at the head of the message because that re-wrap keeps only '
             + '`message`. If a transport ever ANSWERS with this fact, the verdict becomes '
             + 'pending-registration and the code belongs in the ledger batch.',