### New Features
- Fork existing sessions directly from the CLI with `--fork <path|id>`, which copies a source session into a new session in the current project. See [README.md](README.md).
- Extensions and SDK callers can reuse pi's built-in local bash backend via `createLocalBashOperations()` for `user_bash` interception and custom bash integrations. See [docs/extensions.md#user_bash](docs/extensions.md#user_bash).
- Startup no longer updates unpinned npm and git packages automatically. Use `pi update` explicitly, while interactive mode checks for updates in the background and notifies you when newer packages are available. See [README.md](README.md).
### Breaking Changes
- Changed package startup behavior so installed unpinned packages are no longer checked or updated during startup. Use `pi update` to apply npm/git package updates, while interactive mode now checks for available package updates in the background and notifies you when updates are available ([#1963](https://github.com/badlogic/pi-mono/issues/1963))
### Added
- Added `--fork <path|id>` CLI flag to fork an existing session file or partial session UUID directly into a new session ([#2290](https://github.com/badlogic/pi-mono/issues/2290))
- Added `createLocalBashOperations()` export so extensions and SDK callers can wrap pi's built-in local bash backend for `user_bash` handling and other custom bash integrations ([#2299](https://github.com/badlogic/pi-mono/issues/2299))
### Fixed
- Fixed active model selection to refresh immediately after dynamic provider registrations or updates change the available model set ([#2291](https://github.com/badlogic/pi-mono/issues/2291))
- Fixed tmux xterm `modifyOtherKeys` matching for `Backspace`, `Escape`, and `Space`, and resolved raw `\x08` backspace ambiguity by treating Windows Terminal sessions differently from legacy terminals ([#2293](https://github.com/badlogic/pi-mono/issues/2293))
- Fixed Gemini 3 and Antigravity image tool results to stay inline as multimodal tool responses instead of being rerouted through separate follow-up messages ([#2052](https://github.com/badlogic/pi-mono/issues/2052))
- Fixed bundled Bedrock Claude 4.6 model metadata to use the correct 200K context window instead of 1M ([#2305](https://github.com/badlogic/pi-mono/issues/2305))
- Fixed `/reload` to reload keybindings from disk so changes in `keybindings.json` apply immediately ([#2309](https://github.com/badlogic/pi-mono/issues/2309))
- Fixed lazy built-in provider registration so compiled Bun binaries can still load providers on first use without eagerly bundling provider SDKs ([#2314](https://github.com/badlogic/pi-mono/issues/2314))
- Fixed built-in OAuth login flows to use aligned callback handling across Anthropic, Gemini CLI, Antigravity, and OpenAI Codex, and fixed OpenAI Codex login to complete immediately once the browser callback succeeds ([#2316](https://github.com/badlogic/pi-mono/issues/2316))
- Fixed OpenAI-compatible z.ai `network_error` responses to trigger error handling and retries instead of being treated as successful assistant output ([#2313](https://github.com/badlogic/pi-mono/issues/2313))
- Fixed print mode to merge piped stdin into the initial prompt when both stdin and an explicit prompt are provided ([#2315](https://github.com/badlogic/pi-mono/issues/2315))
- Fixed OpenAI Responses replay in coding-agent to normalize oversized resumed tool call IDs before sending them back to OpenAI Codex and other Responses-compatible targets ([#2328](https://github.com/badlogic/pi-mono/issues/2328))
- Fixed tmux extended-keys warning to stay hidden when the tmux server is unreachable, avoiding false startup warnings in sandboxed environments ([#2311](https://github.com/badlogic/pi-mono/pull/2311) by [@kaffarell](https://github.com/kaffarell))