### Highlights
- Introducing our new model GPT-5-Codex-Mini — a more compact and cost-efficient version of GPT-5-Codex
### PRs merged
- #6211 fix: Update the deprecation message to link to the docs
- #6212 [app-server] feat: export.rs supports a v2 namespace, initial v2
notifications
- #6230 Fix nix build
- #3643 fix(core): load custom prompts from symlinked Markdown files
- #4200 allow codex to be run from pid 1
- #6234 Upgrade rmcp to 0.8.4
- #6237 Add modelReasoningEffort option to TypeScript SDK
- #5565 tui: refactor ChatWidget and BottomPane to use Renderables
- #6229 refactor Conversation history file into its own directory
- #6231 Improved token refresh handling to address “Re-connecting” behavior
- #6261 Update rmcp to 0.8.5
- #6214 [app-server] feat: v2 Thread APIs
- #6282 Fixes intermittent test failures in CI
- #6249 stop capturing r when environment selection modal is open
- #6183 [App-server] Implement v2 for account/login/start and account/login/completed
- #6285 Prevent dismissal of login menu in TUI
- #4388 fix: ToC so it doesn’t include itself or duplicate the end marker
- #6288 [App-server] Add account/login/cancel v2 endpoint
- #6286 feat: add model nudge for queries
- #6300 feat: support models with single reasoning effort
- #6319 chore: rename for clarity
- #6216 [app-server] feat: v2 Turn APIs
- #6295 docs: Fix code fence and typo in advanced guide
- #6326 chore: fix grammar mistakes
- #6283 Windows Sandbox: Show Everyone-writable directory warning
- #6289 chore: move relevant tests to app-server/tests/suite/v2
- #6333 feat: clarify that gpt-5-codex should not amend commits unless requested
- #6332 Updated contributing guidelines and PR template to request link to bug report
in PR notes
- #5980 core: widen sandbox to allow certificate ops when network is enabled
- #6337 [App Server] Add more session metadata to listConversations