fix(provider): type auth errors (#27301)

packages/opencode/src/server/routes/instance/httpapi/groups/provider.ts

@@ -10,6 +10,26 @@ import { described } from "./metadata"
 
 const root = "/provider"
 
+const ProviderAuthErrorName = Schema.Union([
+  Schema.Literal("BadRequest"),
+  Schema.Literal("ProviderAuthOauthMissing"),
+  Schema.Literal("ProviderAuthOauthCodeMissing"),
+  Schema.Literal("ProviderAuthOauthCallbackFailed"),
+  Schema.Literal("ProviderAuthValidationFailed"),
+])
+export class ProviderAuthApiError extends Schema.ErrorClass<ProviderAuthApiError>("ProviderAuthError")(
+  {
+    name: ProviderAuthErrorName,
+    data: Schema.Struct({
+      providerID: Schema.optional(ProviderID),
+      field: Schema.optional(Schema.String),
+      message: Schema.optional(Schema.String),
+      kind: Schema.optional(Schema.String),
+    }),
+  },
+  { httpApiStatus: 400 },
+) {}
+
 export const ProviderApi = HttpApi.make("provider")
   .add(
     HttpApiGroup.make("provider")
@@ -39,7 +59,7 @@ export const ProviderApi = HttpApi.make("provider")
           query: WorkspaceRoutingQuery,
           payload: ProviderAuth.AuthorizeInput,
           success: described(Schema.UndefinedOr(ProviderAuth.Authorization), "Authorization URL and method"),
-          error: HttpApiError.BadRequest,
+          error: ProviderAuthApiError,
         }).annotateMerge(
           OpenApi.annotations({
             identifier: "provider.oauth.authorize",
@@ -52,7 +72,7 @@ export const ProviderApi = HttpApi.make("provider")
           query: WorkspaceRoutingQuery,
           payload: ProviderAuth.CallbackInput,
           success: described(Schema.Boolean, "OAuth callback processed successfully"),
-          error: HttpApiError.BadRequest,
+          error: ProviderAuthApiError,
         }).annotateMerge(
           OpenApi.annotations({
             identifier: "provider.oauth.callback",