- convertToolParameters defines its result keys rather than assigning them, so
a discriminator legally named `__proto__` reaches the call instead of the
prototype setter. It also collapses a nullable declaration before dispatching,
so `type: ["number","null"]` coerces as a number rather than being sent
as text.
- typeNameOf sorts an array `type`: JSON Schema reads it as a SET, so
`["number","null"]` and `["null","number"]` are one declaration
and must not read as branches disagreeing.
- nullableUnion's non-asserting keyword set covers `$defs`, `$id`,
`$schema`, `$anchor`, `$dynamicAnchor` and `$vocabulary` — they
identify or declare rather than assert. `$ref` stays out: it applies
whatever it points at.
Signed-off-by: cliffhall <cliff@futurescale.com>
c9162d0e73