TestDocsMatchRoutes failed on users/get_profile.md: the example carries
default_audio_speed but the response struct tagged it omitempty, so the
gate's zero-value marshal never sees the key and reads the doc as
inventing it. The tag was semantically dead: the column is NOT NULL
DEFAULT 1.0 (schema.sql 44) and writes validate 0.25-4, so a stored 0
is out of domain and every real profile emits the field. Response-only
struct, no form-bind impact. The key was added to the doc example in
ef827a3a without a gate run - this is exactly the class of drift the
gate exists to catch; make test now passes again.
John O'Keefe
e3ca3426ba