Configure this current Slack channel to use gpt-5.6-sol through the openai-codex provider for all new Hermes sessions.

Do this now, do not merely explain the steps.

1. Identify the current Slack channel ID from the active session metadata. Do not guess and do not use a thread ID as the channel ID.
2. Write this persistent channel override using Hermes’ supported configuration command:
   hermes config set platforms.slack.channel_overrides.<CURRENT_CHANNEL_ID>.model gpt-6-astra
   hermes config set platforms.slack.channel_overrides.<CURRENT_CHANNEL_ID>.provider openai-codex
3. Verify both saved values by reading them back.
4. Confirm that model.default in ~/.hermes/config.yaml remains gpt-5.6-luna.
5. Do not change the global model.
6. Do not restart the gateway. I will restart it once all channels are configured.
7. Report the channel ID, saved model, saved provider, global model, and whether the configuration was verified.

If you cannot identify the current channel ID or cannot write the configuration, stop and report the exact blocker. Do not invent an ID or claim success.