Add per-turn cyber access program selection (#40687)

## What changed

- Add the experimental `turn/start.cyberAccessProgram` option with `standard`,
  `daybreakBlue`, and `daybreakRed` values.
- Forward the selection as `access_programs.cyber` on Responses, WebSocket,
  and remote-compaction requests made with ChatGPT authentication, while
  omitting it for API-key and custom-provider requests.
- Preserve the per-turn selection across recovery, compaction, and child-agent
  turns without making it a persistent thread setting.

## Testing

- Cover app-server forwarding, authentication boundaries, WebSocket reuse,
  turn recovery, compaction, and child-agent inheritance.

GitOrigin-RevId: d2eb468f365b2214c5099bc21741cf30f8bd2eb5

codex-rs/exec/src/lib.rs

@@ -994,6 +994,7 @@ async fn run_exec_session(args: ExecRunArgs) -> anyhow::Result<()> {
                         output_schema,
                         collaboration_mode: None,
                         multi_agent_mode: None,
+                        cyber_access_program: None,
                     },
                 },
                 "turn/start",