fix: pass request model to Codex CLI options

Author: mikehostetler

README.md

@@ -93,7 +93,7 @@ Precedence:
 Default mapping from `RunRequest`:
 - `prompt` -> streamed turn input
 - `cwd` -> `thread_opts.working_directory`
-- `model` -> `thread_opts.model`
+- `model` -> `codex_opts.model` and `thread_opts.model`
 - `max_turns` -> `turn_opts.max_turns`
 - `timeout_ms` -> `turn_opts.timeout_ms`
 - `system_prompt` -> `thread_opts.developer_instructions`

lib/jido_codex/options.ex

@@ -93,7 +93,9 @@ defmodule Jido.Codex.Options do
       thread_id: nil,
       resume_last: false,
       cancel_mode: :immediate,
-      codex_opts: %{},
+      codex_opts:
+        %{}
+        |> maybe_put(:model, request.model),
       thread_opts:
         %{}
         |> maybe_put(:working_directory, request.cwd)

test/jido/codex/options_test.exs

@@ -21,6 +21,7 @@ defmodule Jido.Codex.OptionsTest do
     assert options.prompt == "hello"
     assert options.transport == :exec
     assert options.cancel_mode == :immediate
+    assert options.codex_opts.model == "gpt-5"
     assert options.thread_opts.working_directory == "/tmp/project"
     assert options.thread_opts.model == "gpt-5"
     assert options.thread_opts.developer_instructions == "be concise"