Of course, right after yesterday's PR which was merged super-fast we get
even more model updates from OpenCode:
- **Big Pickle**: now supports interleaved reasoning as per
https://github.com/anomalyco/models.dev/commit/06908cbf36164dfa727251d5fad357c6e98cc983
- **Ring 2.6 1T Free**: a new free model [available for a limited
time](https://x.com/opencode/status/2053393732221739498) as per
https://github.com/anomalyco/models.dev/commit/359fd879b8c4a98b58347ad4de21c7e2d3f306af.
Reasoning levels were discovered by manually checking what's available
in OpenCode CLI.

This PR was tested by asking both models to do a simple task (_"in this
file rename Bob to Potato"_) at different reasoning levels. Both models
successfully accomplished the task!

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [ ] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Release Notes:

- OpenCode Free: updated models (BigPickle and Ring 2.6 1T Free)