fix: ensure 'name' isnt being sent in request body for custom agent

packages/opencode/src/agent/agent.ts

@@ -188,7 +188,6 @@ export namespace Agent {
       item.topP = value.top_p ?? item.topP
       item.mode = value.mode ?? item.mode
       item.color = value.color ?? item.color
-      item.name = value.options?.name ?? item.name
       item.steps = value.steps ?? item.steps
       item.options = mergeDeep(item.options, value.options ?? {})
       item.permission = PermissionNext.merge(item.permission, PermissionNext.fromConfig(value.permission ?? {}))

packages/opencode/src/config/config.ts

@@ -483,6 +483,7 @@ export namespace Config {
     .catchall(z.any())
     .transform((agent, ctx) => {
       const knownKeys = new Set([
+        "name",
         "model",
         "prompt",
         "description",