fix(httpapi): omit absent optional response fields (#25214)

packages/opencode/src/provider/provider.ts

@@ -24,7 +24,7 @@ import { EffectBridge } from "@/effect/bridge"
 import { InstanceState } from "@/effect/instance-state"
 import { AppFileSystem } from "@opencode-ai/core/filesystem"
 import { isRecord } from "@/util/record"
-import { withStatics } from "@/util/schema"
+import { optionalOmitUndefined, withStatics } from "@/util/schema"
 
 import * as ProviderTransform from "./transform"
 import { ModelID, ProviderID } from "./schema"
@@ -875,7 +875,7 @@ const ProviderCost = Schema.Struct({
   input: Schema.Finite,
   output: Schema.Finite,
   cache: ProviderCacheCost,
-  experimentalOver200K: Schema.optional(
+  experimentalOver200K: optionalOmitUndefined(
     Schema.Struct({
       input: Schema.Finite,
       output: Schema.Finite,
@@ -886,7 +886,7 @@ const ProviderCost = Schema.Struct({
 
 const ProviderLimit = Schema.Struct({
   context: Schema.Finite,
-  input: Schema.optional(Schema.Finite),
+  input: optionalOmitUndefined(Schema.Finite),
   output: Schema.Finite,
 })
 
@@ -895,7 +895,7 @@ export const Model = Schema.Struct({
   providerID: ProviderID,
   api: ProviderApiInfo,
   name: Schema.String,
-  family: Schema.optional(Schema.String),
+  family: optionalOmitUndefined(Schema.String),
   capabilities: ProviderCapabilities,
   cost: ProviderCost,
   limit: ProviderLimit,
@@ -903,7 +903,7 @@ export const Model = Schema.Struct({
   options: Schema.Record(Schema.String, Schema.Any),
   headers: Schema.Record(Schema.String, Schema.String),
   release_date: Schema.String,
-  variants: Schema.optional(Schema.Record(Schema.String, Schema.Record(Schema.String, Schema.Any))),
+  variants: optionalOmitUndefined(Schema.Record(Schema.String, Schema.Record(Schema.String, Schema.Any))),
 })
   .annotate({ identifier: "Model" })
   .pipe(withStatics((s) => ({ zod: zod(s) })))
@@ -914,7 +914,7 @@ export const Info = Schema.Struct({
   name: Schema.String,
   source: Schema.Literals(["env", "config", "custom", "api"]),
   env: Schema.Array(Schema.String),
-  key: Schema.optional(Schema.String),
+  key: optionalOmitUndefined(Schema.String),
   options: Schema.Record(Schema.String, Schema.Any),
   models: Schema.Record(Schema.String, Model),
 })