documentation

A field description calling jenis a pillar and an admin_note exception that never existed: two lying contract descriptions, plus an undocumented 400.

TL;DR: I noticed the spec wrongly called the jenis field a service pillar instead of its read-only application kind and claimed admin_note was ignored for Submission. The history endpoint also lacked its documented 400 response for malformed IDs. Fixing both descriptions and adding the error response corrected the docs and the generated frontend types.