## Breaking Changes in SDK
Due to some performance issues we had to make a few breaking changes in our data model.
### Diff metadata
The diffs contained in the metadata for the edit and patch tool will no longer contain a `to` and `from` field with full file contents. they will only contain a `patch` field with the unified diff
Additionally all snapshot diffs contained in user message and session diff will follow this format
### `UserMessage.variant`
Before the user message had a `variant` field - it is now nested under `model` so `userMessage.model.variant`
## Core
- Added OTLP observability export support.
- Fixed failed web fetches leaving stale timeouts behind.
- Improved `opencode login` transport error messages.
- Retried Alibaba provider rate-limit errors instead of failing immediately.
- Kept model variants scoped to the selected model.
- Added full HTTP proxy support.
- Fixed OpenRouter provider issues.
- Aligned GitHub Copilot Anthropic reasoning levels and removed incorrect Qwen variants.
- Reduced TypeScript LSP memory use by using the native project config. (@derekbar90)
## TUI
- Added a keybinding option for "Switch model variant". (@ariane-emory)
- Added PDF drag and drop for attachments. (@gitpush-gitpaid)
- Added `opencode run --dangerously-skip-permissions` to auto-approve non-denied permission prompts.
## Desktop
- Improved subagent sessions with clearer titles, navigation, and progress states.
- Moved auto-accept permissions into Settings.
- Showed full file names on attachment chips.
**Thank you to 4 community contributors:**
- @derekbar90:
- fix(lsp): MEMORY LEAK: ensure typescript server uses native project config (#19953)
- @mchenco:
- docs: update Cloudflare provider setup to reflect /connect prompt flow (#20589)
- @gitpush-gitpaid:
- feat(opencode): Add PDF attachment Drag and Drop (#16926)
- @ariane-emory:
- fix(tui): use sentence case for theme mode command palette items (#21192)
- feat(tui): allow variant_list keybind for the "Switch model variant" command (#21185)