### 新功能
- 编辑器输入中新增 Emacs 风格的剪贴板（kill ring）（`ctrl+k`/`ctrl+y`/`alt+y`）和撤销（`ctrl+z`）功能 ([#1373](https://github.com/badlogic/pi-mono/pull/1373) by [@Perlence](https://github.com/Perlence))
- 新增 OpenRouter `auto` 模型别名（`openrouter:auto`）以实现自动模型路由 ([#1361](https://github.com/badlogic/pi-mono/pull/1361) by [@yogasanas](https://github.com/yogasanas))
- 扩展可通过扩展 UI 上下文中的 `pasteToEditor` 以编程方式将内容粘贴到编辑器中。请参阅 [docs/extensions.md](docs/extensions.md) ([#1351](https://github.com/badlogic/pi-mono/pull/1351) by [@kaofelix](https://github.com/kaofelix))
- `pi <package> --help` 及无效子命令现在会显示帮助信息，而非静默失败 ([#1347](https://github.com/badlogic/pi-mono/pull/1347) by [@ferologics](https://github.com/ferologics))
### 新增
- 在扩展 UI 上下文中新增 `pasteToEditor`，支持以编程方式粘贴到编辑器 ([#1351](https://github.com/badlogic/pi-mono/pull/1351) by [@kaofelix](https://github.com/kaofelix))
- 新增包子命令帮助信息及无效命令的友好错误提示 ([#1347](https://github.com/badlogic/pi-mono/pull/1347) by [@ferologics](https://github.com/ferologics))
- 新增 OpenRouter `auto` 模型别名以支持自动模型路由 ([#1361](https://github.com/badlogic/pi-mono/pull/1361) by [@yogasanas](https://github.com/yogasanas))
- 为编辑器输入新增剪贴板（ctrl+k/ctrl+y/alt+y）和撤销（ctrl+z）支持 ([#1373](https://github.com/badlogic/pi-mono/pull/1373) by [@Perlence](https://github.com/Perlence))
### 变更
- 将默认模型从 Claude Opus 4.5 替换为 Opus 4.6 ([#1345](https://github.com/badlogic/pi-mono/pull/1345) by [@calvin-hpnet](https://github.com/calvin-hpnet))
### 修复
- 修复了临时 Git 包缓存（`-e <git-url>`）的问题，使其在未锁定源（包括分离头或无上游的检出）命中缓存时能够正确刷新
- 修复了扩展自定义编辑器时导致重试被中止的问题 ([#1364](https://github.com/badlogic/pi-mono/pull/1364) by [@Perlence](https://github.com/Perlence))
- 修复了自动补全未生效于扩展创建的自定义编辑器的问题 ([#1372](https://github.com/badlogic/pi-mono/pull/1372) by [@Perlence](https://github.com/Perlence))
- 修复了扩展关闭流程，使其采用干净的 TUI 关闭路径，避免产生孤儿进程
### New Features
- Emacs-style kill ring (`ctrl+k`/`ctrl+y`/`alt+y`) and undo (`ctrl+z`) in the editor input ([#1373](https://github.com/badlogic/pi-mono/pull/1373) by [@Perlence](https://github.com/Perlence))
- OpenRouter `auto` model alias (`openrouter:auto`) for automatic model routing ([#1361](https://github.com/badlogic/pi-mono/pull/1361) by [@yogasanas](https://github.com/yogasanas))
- Extensions can programmatically paste content into the editor via `pasteToEditor` in the extension UI context. See [docs/extensions.md](docs/extensions.md) ([#1351](https://github.com/badlogic/pi-mono/pull/1351) by [@kaofelix](https://github.com/kaofelix))
- `pi <package> --help` and invalid subcommands now show helpful output instead of failing silently ([#1347](https://github.com/badlogic/pi-mono/pull/1347) by [@ferologics](https://github.com/ferologics))
### Added
- Added `pasteToEditor` to extension UI context for programmatic editor paste ([#1351](https://github.com/badlogic/pi-mono/pull/1351) by [@kaofelix](https://github.com/kaofelix))
- Added package subcommand help and friendly error messages for invalid commands ([#1347](https://github.com/badlogic/pi-mono/pull/1347) by [@ferologics](https://github.com/ferologics))
- Added OpenRouter `auto` model alias for automatic model routing ([#1361](https://github.com/badlogic/pi-mono/pull/1361) by [@yogasanas](https://github.com/yogasanas))
- Added kill ring (ctrl+k/ctrl+y/alt+y) and undo (ctrl+z) support to the editor input ([#1373](https://github.com/badlogic/pi-mono/pull/1373) by [@Perlence](https://github.com/Perlence))
### Changed
- Replaced Claude Opus 4.5 with Opus 4.6 as default model ([#1345](https://github.com/badlogic/pi-mono/pull/1345) by [@calvin-hpnet](https://github.com/calvin-hpnet))
### Fixed
- Fixed temporary git package caches (`-e <git-url>`) to refresh on cache hits for unpinned sources, including detached/no-upstream checkouts
- Fixed aborting retries when an extension customizes the editor ([#1364](https://github.com/badlogic/pi-mono/pull/1364) by [@Perlence](https://github.com/Perlence))
- Fixed autocomplete not propagating to custom editors created by extensions ([#1372](https://github.com/badlogic/pi-mono/pull/1372) by [@Perlence](https://github.com/Perlence))
- Fixed extension shutdown to use clean TUI shutdown path, preventing orphaned processes