normalizeTools only ran toolWireSchema/zodToWireSchema/arkToWireSchema
inside the if (doInjectIntent) branch, so any tool whose intentMode
resolved to "omit" (function intent, or intent: "omit" like the
builtin eval/resolve) had its live arktype/zod schema object left in
parameters. The pruneDescriptions branch already wire-encoded
unconditionally, so the two branches disagreed; first-party providers
re-encoded with toolWireSchema themselves and never noticed, but any
downstream consumer that serialized parameters as-is ended up with an
invalid schema (arktype AST: object-valued required, domain instead of
type, no properties).
Hoist toolWireSchema(t) out of the inject-intent branch so it always
runs and inject intent on top, mirroring the pruneDescriptions shape.
Drop the now-redundant isZodSchema/isArkSchema/zodToWireSchema/
arkToWireSchema imports.
Fixes#3074
roboomp
48a78f278c