Fresh new updates from OpenCode dropped recently.

Closes #59225.

## Self-Review Checklist:

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

Release Notes:

- Added GLM 5.2 + Kimi K2.7 Code (OpenCode Go) and DeepSeek V4 Pro
(OpenCode Zen); removed/restricted models deprecated upstream (MiniMax
M3 Free removed; GLM 5, Kimi K2.5, MiniMax M2.5 now Zen-only)