Sækja opencode 1.18.4

Core
Improvements
- Use adaptive thinking controls for Kimi models on Anthropic-compatible providers, with summarized reasoning output by default. (@chouqin)
Bugfixes
- Reduce OpenAI provider header timeouts during slow connection setup.
- Respect provider-defined reasoning options instead of falling back to the wrong reasoning controls.
- Restore Azure Cognitive Services endpoint support for Azure-hosted models.
Desktop
Improvements
- Sync the embedded terminal theme with the app theme.
- Improve the review panel so open file tabs can stay aligned with the current diff view.
- Rewrite the v2 prompt input for more reliable command, context, shell, attachment, and history interactions.
- Improve review panel resizing and sticky controls.
Bugfixes
- Preserve command drafts in the command menu.
- Avoid session view failures when message parent links are missing.
- Prevent sending empty prompt text parts.
- Restore model variant selection accessibility.
- Show keybind tooltips on prompt input controls. (@ProdigyRahul)
- Deduplicate repeated file entries in diff summaries.
- Prevent recovery window handling from touching destroyed windows.
Thank you to 3 community contributors:
- @jerome-benoit:
- fix(nix): relax Bun version check for desktop build (#36767)
- fix(nix): restore desktop integration (#37197)
- @ProdigyRahul:
- fix(app): show keybind tooltips on prompt input controls (#37824)
- @chouqin:
- feat(opencode): use adaptive thinking effort for kimi family on anthr… (#37696)