v1.4.2

This week's release includes [support for agent skills](https://zed.dev/docs/ai/skills), a global `AGENTS.md` file for user-wide agent instructions, the ability to choose a base branch in the branch diff view, and a new `editor: toggle all diff hunks` action.

## Features

### AI

- Agent: Added support for skills.
- Agent: Added support for a global `AGENTS.md` file alongside `settings.json` for user-wide instructions that are included in every project’s system prompt. ([#56757](https://github.com/zed-industries/zed/pull/56757))
- Agent: Added commands to open global and project-specific `AGENTS.md` rules. ([#57847](https://github.com/zed-industries/zed/pull/57847))
- Agent: Added `agent: new terminal thread` for defining custom shortcuts to launch an Agent Panel terminal thread. ([#57400](https://github.com/zed-industries/zed/pull/57400))
- Agent: Added support for image output from MCP tools. ([#57134](https://github.com/zed-industries/zed/pull/57134))
- Agent: Added support for OAuth client pre-registration with a client ID and client secret in the built-in MCP client. ([#52900](https://github.com/zed-industries/zed/pull/52900))
- Agent: Improved file and skill mention disambiguation in the Agent Panel. ([#50097](https://github.com/zed-industries/zed/pull/50097); thanks [jmg-duarte](https://github.com/jmg-duarte), [#56926](https://github.com/zed-industries/zed/pull/56926))
- OpenCode: Updated available models and metadata, including reasoning support, image support, and token counts. ([#57076](https://github.com/zed-industries/zed/pull/57076); thanks [Vlaaaaaaad](https://github.com/Vlaaaaaaad))

### Git

- Added the ability to choose the base branch in the branch diff view. ([#56569](https://github.com/zed-industries/zed/pull/56569))
- Added keyboard shortcuts for switching between the Changes and History tabs: `cmd-1`/`cmd-2` on macOS and `ctrl-1`/`ctrl-2` on Linux/Windows. ([#56743](https://github.com/zed-industries/zed/pull/56743))
- Added `editor: toggle all diff hunks` to expand or collapse all diff hunks at once. ([#56421](https://github.com/zed-industries/zed/pull/56421))
- Improved the display of user avatars in Git-related surfaces. ([#56755](https://github.com/zed-industries/zed/pull/56755))
- Improved diff stats by formatting large line counts with thousand separators. ([#56754](https://github.com/zed-industries/zed/pull/56754))
- Added the `git.show_stage_restore_buttons` setting to hide Stage/Restore buttons on diff hunks. ([#56740](https://github.com/zed-industries/zed/pull/56740))

### Languages

- Added runnables for C++. ([#57161](https://github.com/zed-industries/zed/pull/57161); thanks [Helmutt03](https://github.com/Helmutt03))

### Linux

- Added support for `buffer_font_fallbacks` on Linux. ([#54878](https://github.com/zed-industries/zed/pull/54878); thanks [Albab-Hasan](https://github.com/Albab-Hasan))
- Improved the first mouse-driven text copy action on Wayland. ([#50406](https://github.com/zed-industries/zed/pull/50406); thanks [soundslocke](https://github.com/soundslocke))

### Other

- Added `markdown_preview_code_font_family` to override the code font in the markdown preview. ([#56744](https://github.com/zed-industries/zed/pull/56744); thanks [wln](https://github.com/wln))
- Improved CSV preview with column pinning to keep identifiers visible while scrolling. ([#56619](https://github.com/zed-industries/zed/pull/56619); thanks [HalavicH](https://github.com/HalavicH))
- Improved restricted mode by making it more obvious and requiring immediate action when opening an untrusted project. ([#57056](https://github.com/zed-industries/zed/pull/57056))
- Improved truncated text labels so they no longer show trailing spaces or punctuation before the ellipsis. ([#57106](https://github.com/zed-industries/zed/pull/57106))

## Bug Fixes

- Agent: Fixed image output from tools not being reloaded when restoring a thread. ([#57143](https://github.com/zed-industries/zed/pull/57143))
- MCP OAuth: Fixed authentication failing when an MCP server returned a broken metadata URL. ([#53502](https://github.com/zed-industries/zed/pull/53502))
- MCP OAuth: Fixed OAuth client registration failing with some MCP servers. ([#53501](https://github.com/zed-industries/zed/pull/53501))
- Fixed AI completions from OpenAI-compatible providers failing when token usage details were missing. ([#55919](https://github.com/zed-industries/zed/pull/55919); thanks [marius851000](https://github.com/marius851000))
- Git Graph: Fixed breakage that occurred when Git’s `log.showSignature` setting was enabled. ([#55708](https://github.com/zed-industries/zed/pull/55708); thanks [toddlerer](https://github.com/toddlerer))
- OpenAI: Fixed an issue where error messages would not appear properly. ([#57750](https://github.com/zed-industries/zed/pull/57750))
- Fixed certain ACP registry agents not cleaning up old versions. ([#55290](https://github.com/zed-industries/zed/pull/55290); thanks [cppcoffee](https://github.com/cppcoffee))
- Fixed some Gemini tool calls failing because Zed could send incomplete tool schemas. ([#57160](https://github.com/zed-industries/zed/pull/57160))
- Fixed a bug where using Gemini with certain tools, especially via MCP, resulted in "Invalid JSON payload received" errors due to incompatible JSON schema formats. ([#49292](https://github.com/zed-industries/zed/pull/49292); thanks [dastrobu](https://github.com/dastrobu))
- Fixed `zed --new ssh://host/path` reusing an existing SSH window instead of opening a new one. This also applied to other URL-shaped path arguments. ([#54408](https://github.com/zed-industries/zed/pull/54408))
- Fixed a bug where non-ASCII characters in diagnostic messages were incorrectly rendered with spurious `\` characters. ([#55782](https://github.com/zed-industries/zed/pull/55782); thanks [alkinun](https://github.com/alkinun))
- Fixed a crash in GPUI when typing into an Input widget inside a cached view ([#50456](https://github.com/zed-industries/zed/issues/50456)). ([#50665](https://github.com/zed-industries/zed/pull/50665); thanks [xcb3d](https://github.com/xcb3d))
- Fixed a panic that could occur when streaming in text with the `edit_file` tool. ([#57100](https://github.com/zed-industries/zed/pull/57100))
- Fixed a panic when loading certain Tree-sitter grammars containing supertypes. ([#57183](https://github.com/zed-industries/zed/pull/57183))
- Fixed a rare panic that could occur when lines in the editor contained many invisible characters. ([#57137](https://github.com/zed-industries/zed/pull/57137))
- Fixed agent edits sometimes not getting auto-accepted when they were committed. ([#56892](https://github.com/zed-industries/zed/pull/56892))
- Fixed the agent erroring when using Copilot as a provider and switching between OpenAI and Anthropic models. ([#56655](https://github.com/zed-industries/zed/pull/56655))
- Fixed bash syntax highlighting for conditional expressions, arithmetic expressions, and related operators. ([#56484](https://github.com/zed-industries/zed/pull/56484); thanks [terror](https://github.com/terror))
- Fixed the activity indicator in the status bar not opening a menu with items to cancel running actions. ([#56865](https://github.com/zed-industries/zed/pull/56865))
- Fixed commit title length checks miscounting multi-byte characters as multiple characters. ([#57025](https://github.com/zed-industries/zed/pull/57025); thanks [koxya](https://github.com/koxya))
- Fixed context server availability updates when a new worktree is added to or removed from a project. ([#51244](https://github.com/zed-industries/zed/pull/51244); thanks [rioriost](https://github.com/rioriost))
- Fixed importing the VS Code setting `files.simpleDialog.enable` with the opposite value. ([#55678](https://github.com/zed-industries/zed/pull/55678); thanks [Earlopain](https://github.com/Earlopain))
- Fixed macOS Cmd-E/Cmd-G find behavior so Cmd-E seeds find from the cursor or selection and Cmd-G advances through the newly seeded matches. ([#56681](https://github.com/zed-industries/zed/pull/56681))
- Fixed markdown preview content being clipped past the pane edge when the buffer search bar is open. ([#55009](https://github.com/zed-industries/zed/pull/55009); thanks [tkilaker](https://github.com/tkilaker))
- Fixed Mermaid diagrams not rendering with the default UI typeface. ([#56695](https://github.com/zed-industries/zed/pull/56695))
- Fixed npm-backed tool installs to better respect npm release-age filters. ([#56957](https://github.com/zed-industries/zed/pull/56957))
- Fixed pressing "New Thread" or `cmd-n` doing nothing when the Agent Panel's Settings view was open. ([#56818](https://github.com/zed-industries/zed/pull/56818))
- Fixed running Zed on Ubuntu 20.04 installed via the installer by bundling the required `libstdc++.so`. ([#57132](https://github.com/zed-industries/zed/pull/57132))
- Fixed Settings UI search returning unrelated results for multi-word queries. ([#56835](https://github.com/zed-industries/zed/pull/56835))
- Fixed the `agent: toggle profile selector` keybinding being ignored while the agent was generating a response. ([#56784](https://github.com/zed-industries/zed/pull/56784); thanks [Rfluid](https://github.com/Rfluid))
- Fixed the Agent Panel’s @-mention menu not appearing when `@` immediately follows `(`, `[`, or `{`. ([#55504](https://github.com/zed-industries/zed/pull/55504))
- Fixed tool paths preferring files in subdirectories named after the project root. ([#56230](https://github.com/zed-industries/zed/pull/56230); thanks [procr1337](https://github.com/procr1337))
- Fixed UI freezes on Linux (Wayland) with certain GPU/driver combinations. ([#57077](https://github.com/zed-industries/zed/pull/57077); thanks [higorprado](https://github.com/higorprado))
- Fixed text selection not always matching the mouse position in markdown blocks in the Agent Panel. ([#56861](https://github.com/zed-industries/zed/pull/56861); thanks [timvermeulen](https://github.com/timvermeulen))
- Fixed `zed://` links focusing Zed and improved handling of `zed://agent` links. ([#57047](https://github.com/zed-industries/zed/pull/57047))
- Fixed `workspace: open files` ignoring the Project Panel's `sort_mode` setting. ([#56720](https://github.com/zed-industries/zed/pull/56720); thanks [hron](https://github.com/hron))
- Fixed undo behavior after accepting LSP completions, so completions and their additional edits are reverted together. ([#53980](https://github.com/zed-industries/zed/pull/53980); thanks [HuaGu-Dragon](https://github.com/HuaGu-Dragon))
- Fixed the Python REPL UI not populating correctly in remote projects. ([#54709](https://github.com/zed-industries/zed/pull/54709); thanks [MostlyKIGuess](https://github.com/MostlyKIGuess))
- Removed code lens blocks from diff views to fix broken background highlights. ([#56726](https://github.com/zed-industries/zed/pull/56726))
- Fixed "speed: Extra inputs are not permitted" errors for Opus 4.6 and 4.7 in the Anthropic API provider. ([#57707](https://github.com/zed-industries/zed/pull/57707))
- Fixed code lens flickering when no commands were resolved. ([#57790](https://github.com/zed-industries/zed/pull/57790))

## Breaking Changes and Notices

- Removed the rules library and replaced it with skills support.
- Replaced the `@rule` autocomplete entry with `@skill` in the agent chat input. ([#56902](https://github.com/zed-industries/zed/pull/56902))