v1.14.21

anomalyco/opencodev1.14.21Apr 23, 2026by opencode-agent[bot]

AI Summary

A significant release with major improvements across multiple areas including LSP diagnostics support, Git repository handling, language server updates, and UI/UX enhancements. It adds support for pulling diagnostics from LSP servers, improves project detection for bare Git repos, and introduces the Roslyn Language Server for C# support.

Key Highlights

Support pull diagnostics from LSP servers (C# and Kotlin)
Fix project detection and caching for bare Git repos and worktrees
Replace csharp-ls with Roslyn Language Server for C# support
Add Mistral Small high reasoning variant support
Improve session compaction to preserve useful context

New Features

LSP server diagnostics pull support
Roslyn Language Server integration for C#
Mistral Small reasoning variant
UTF-8 BOM preservation in file operations
TUI fail-fast for invalid/missing sessions

Full Release Notes

## Core
- Support pull diagnostics from LSP servers that use them, including C# and Kotlin.
- Fix project detection and caching for bare Git repos and worktrees. (@StevenTCramer)
- Improve session compaction so long threads keep more useful context when older history is summarized.
- Preserve UTF-8 BOMs when files are edited, patched, or rewritten through tools.
- Use Roslyn Language Server for C# support instead of `csharp-ls`. (@jmbryan4)
- Add the high reasoning variant for supported Mistral Small models. (@rubdos)
- Hide unsupported variants for Kimi models that do not expose them.

## TUI
- Fail fast when opening an invalid or missing session instead of starting the TUI in a broken state.
- Skip upgrade checks when auto-update is disabled. (@rahuliyer95)

## Desktop
- Keep project avatar previews consistent between the sidebar and edit dialog.
- Improve project icon overrides so uploaded icons and color fallbacks behave correctly in the edit dialog.
- Improve Linux desktop metadata for app listings and categorization. (@NN708)

**Thank you to 6 community contributors:**
- @rahuliyer95:
  - fix(tui): don't check for version upgrades if it's disabled by the user (#20089)
- @github-actions[bot]:
  - Update VOUCHED list
- @rubdos:
  - feat: add Mistral Small reasoning variant support (issue #19479) (#23735)
- @jmbryan4:
  - feat: replace csharp-ls with roslyn-language-server (#14463)
- @NN708:
  - fix(desktop): update desktop file and MetaInfo file (#14933)
- @StevenTCramer:
  - fix(project): use git common dir for bare repo project cache (#19054)