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xarmian
d32e07261b
Codex round 16, asked whether this change is consistent with its siblings
in the same file and extensible by someone who did not write it. It found
a live bypass instead.
encoding/json matches an incoming key to a struct field by an exact match
first and a CASE-INSENSITIVE one otherwise, so {"Fields":...} and
{"FIELDS":...} land in ItemCreate.Fields exactly as {"fields":...} does.
The walk looked the key up case-SENSITIVELY, so it skipped the nested
document for a body the handler went on to accept, and the database
answered the original 500.
Measured before the fix: `fields` refused, `Fields` and `FIELDS`
accepted.
This is the same defect shape as everything else in this unit — a check
that agrees with one layer's rules while the layer that actually consumes
the value uses different ones — which is why the fix is a PREDICATE
rather than a wider map: the map is the vocabulary, and the matching RULE
belongs to the consumer. Someone adding a key should not also have to
remember to add its spellings.
The test drives six spellings including mixed case, with a control
asserting an unlisted key stays caller data in any casing, so this is
case-insensitive matching rather than matching everything.
Claude-Session: https://claude.ai/code/session_011T365kP1N9V88y15HxL4YN