Task file and 13 given files (2 new: the wire fixture with a detail and
brokerd/tests/invalid_detail.rs; 11 new versions of existing tests, most
only adding `detail: None`).
Checked against a reference in a scratch worktree with its own target/,
on titan (rustc 1.98.1, clippy 0.1.98): make gate prints gate: ok with
956 tests (944 + 12 new); /tmp has no new entries after the gate. All 21
quoted before-blocks occur once in master, and applying the edits to
master gives the reference byte for byte. The given files are the
reference's, formatted, none over 500 lines; no chat-template tag in
the plan.
Before the edits, strict's envelopes_reject_unknown_keys_at_every_depth
fails and ten test targets do not compile, as step 2 lists.
Mutations: 21 one-line breaks of the reference; 20 caught by the given
tests. The one not caught (dropping `default` from the detail attribute)
cannot change behaviour: serde reads a missing Option field as None.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
