Release Notes:

- N/A

Closes #31351

# Diagnostics Mention in New Threads

## Overview

Adds the `@diagnostics` mention to the new Agent Panel threads so users
can inject current LSP diagnostics (errors by default) without switching
to a text thread. The diagnostics mention is fully integrated into ACP
mention parsing, the context picker, and the message-editor pipeline so
it round-trips cleanly and shows up in the standard `@` menu.

## Context

- **Request:** bring `/diagnostics` parity to the “New Thread” assistant
experience.
- **Scope:** diagnostics only; `/terminal` mention would be implemented
in a separate PR.
- **Docs:** updated Agent Panel docs + changelog.

## Implementation Details

1. **Mention plumbing**
- Added `MentionUri::Diagnostics` to `acp_thread`, including parsing
(`zed:///agent/diagnostics?include_warnings=true`) and icon/name
metadata.
- Tests ensure diagnostics links round-trip via Markdown mention
serialization.

2. **Context picker / completion**
- New `ContextPickerMode::Diagnostics` exposes an `@diagnostics` entry
in the mention menu.
- Completions turn `@diagnostics` into a fully fledged mention, reusing
the existing confirmation pipeline.

3. **Message editor + thread serialization**
- Resolving the mention calls the existing diagnostics collector from
`assistant_slash_commands`, embedding the tool output inline with other
context blocks (`<diagnostics>…</diagnostics>`).
- Thread-link handling ignores diagnostics backlinks so clicking them
doesn’t try to reopen nonexistent resources.
   

# How it looks
<img width="800" height="480" alt="image"
src="https://cf5gpe8lxo.ufs.sh/f/EmJ5Xl877qJO1mzC9Zrn8AmJZHeShC4RoUwvTMlF2tfPzj06"
/>

Release Notes:

- Allow mentioning diagnostics in the agent panel via `@diagnostics`

---------

Co-authored-by: Bennet Bo Fenner <bennet@zed.dev>

Release Notes:

- N/A *or* Added/Fixed/Improved ...

Avoids the panic in #46974

But should be solved by using `saturating_sub` on the `start_overshoot`
calculation, ref:
https://github.com/zed-industries/zed/pull/47046#issuecomment-3762855786


https://github.com/zed-industries/zed/blob/37715d5a50666baaa824eafec2131ee6d80f8e0b/crates/rope/src/chunk.rs#L403C5-L415C6

This function gets called with PANIC = false from `slice`. But if the
offset is outside the text, `log_err_char_boundary` will still panic,
because the first `if` doesn’t bail out early.

Release Notes:

- N/A

Signed-off-by: Marco Mihai Condrache <52580954+marcocondrache@users.noreply.github.com>

cc https://github.com/zed-industries/zed/pull/45584, was removed in
#47200 fully due to breaking ssh
Also makes ZED_BUILD_REMOTE_SERVER a bit easier to use

Release Notes:

- N/A *or* Added/Fixed/Improved ...

Follow up to https://github.com/zed-industries/zed/pull/47200, fixing an
edge case where if the heartbeat failure disconnects us we get stuck in
an unconnectable state

Release Notes:

- N/A *or* Added/Fixed/Improved ...

Closes https://github.com/zed-industries/zed/issues/38522

Release Notes:

- Fixed remote connections getting stuck in limbo when the server side
dies unexpectedly

Closes https://github.com/zed-industries/zed/issues/42859

Release Notes:

- Added support for language range formatting in remoting setups

Closes ZED-465

Release Notes:

- N/A *or* Added/Fixed/Improved ...

Closes #46502

The issue here was that we were not looking into the sub page stack when
looking headers up, resulting in an out of bounds index. This PR fixes
this.

Due to me also fixing another small bug in the UI (and adding proper
support for the breadcrumbs), I had to move quite some stuff around here
to get this to work. Namely, I made the `sub_page_stack` a field on the
`SettingsWindow` and now only store the `active_language` in a global to
ensure that we store scroll positions properly for all sub pages. For
that to work with the edit prediction provider page, I had to remove the
struct there and could just move that into a method, which was a nice
side effect there I suppose.

Release Notes:

- Fixed a crash that could occur when trying to edit edit prediction
providers in the settings UI.

Clean up some writing and add content about newer features.

Release Notes:

- N/A

Release Notes:

- N/A

Closes #44694

Release Notes:

- Fixed images being converted to png but retaining old format

## Before:
<img width="574" height="327" alt="Screenshot 2026-01-02 at 5 34 24 PM"
src="https://github.com/user-attachments/assets/92331939-cebc-4f53-99fc-10d5181cf87e"
/>

## After:
<img width="638" height="489" alt="Screenshot 2026-01-02 at 5 34 36 PM"
src="https://github.com/user-attachments/assets/47c05906-fa56-4a53-abd4-790c42230772"
/>

---------

Co-authored-by: versecafe <147033096+versecafe@users.noreply.github.com>
Co-authored-by: MrSubidubi <finn@zed.dev>

Release Notes:

- N/A

Release Notes:

- Fixed an issue where rebuilding a dev extension would compile the
extension in release and not debug mode.

This way, the table:
- Determines its height by the grid’s content
- Still keeps `width: 100%` so it fills its container horizontally

| Before | After |
|--------|--------|
| <img width="1732" height="1125" alt="image"
src="https://github.com/user-attachments/assets/5d739664-5793-4c16-a765-dc373c7cb10f"
/> | <img width="1732" height="1125" alt="image"
src="https://github.com/user-attachments/assets/c857d28b-67c2-4ba1-b4a6-869a154b050b"
/> |

Closes #46768

Release Notes:

- Fixed issue where markdown tables rendered within lists would overlap
items above/below it

The recently-introduced unified Git picker was previously only available
if you reached for the branch, worktree or stash pickers through the
keybinding. Now, if you click on the title bar's branch button, you'll
also be able to quickly view the worktree and stash pickers.

Release Notes:

- N/A

Release Notes:

- N/A

Follow up to https://github.com/zed-industries/zed/pull/40570.

This PR removes the UI treatment where we collapse a terminal command
into a disclosure component if it spans more than three lines. I
initially thought having this fancy treatment in the UI would make it
sleeker but it actually feels like a counter-productive move to
arbitrarily hide command lines; they're arguably always important to see
in full, even when they're super long. I'm happy to get some feedback
here, but I think for now, I'd feel better if users could see them all
without having to manually expand/collapse them.

Release Notes:

- N/A

Closes #41832

Extends https://github.com/zed-industries/zed/pull/19455

When an internal `.editorconfig` is detected in the worktree, we
traverse parent directories up to the filesystem root looking for
additional `.editorconfig` files. All discovered external configs are
loaded and cached (shared when multiple worktrees reference the same
parent directories). When computing settings for a file, external
configs are applied first (from furthest to closest), then internal
configs.

For local projects, file watchers are set up for each external config so
changes are applied immediately. When a project is shared via collab,
external configs are sent to guests through the existing
`UpdateWorktreeSettings` proto message (with a new `outside_worktree`
field). SSH remoting works similarly.

Limitations: We don't currently take creation of new external editor
config files into account since they are loaded once on worktree add.

Release Notes:

- Added support for `.editorconfig` files outside the project directory.
Zed now traverses parent directories to find and apply EditorConfig
settings. Use `root = true` in any `.editorconfig` to stop inheriting
settings from parent directories.

Release Notes:

- N/A

Release Notes:

- N/A

Changed the offset of shadow to improve shadow appearance. There was a
1px horizontal offset on all elevated surfaces — barely perceptible, but
once you see it, it's all you see

|Before|After|
|-|-|
|<img width="586" height="884" alt="before"
src="https://github.com/user-attachments/assets/63fa36a7-7845-4c6f-9e73-36ad5056194b"
/>|<img width="586" height="884" alt="after"
src="https://github.com/user-attachments/assets/41a032d3-e7d6-4188-9394-656d5caf822e"
/>|

Release Notes:

- N/A

Closes #47069

Release Notes:

- N/A

We can add something like `pb_40()` if the launchpad is supposed to be
up a bit rather centered

This makes sure all of the new granular permission logic and ui only
applies to the zed agent and doesn't affect the UI of external agents.

Release Notes:

- N/A

Closes #18930

### Summary
- Fix fast Macbook trackpad/mouse scrolling in terminal applications
with mouse mode enabled

### The Problem
Scrolling with a trackpad in tmux, neovim, or any terminal app that
enables mouse mode was too fast. A gentle swipe would send me through
hundreds of lines, making these apps practically unusable in Zed's
terminal.

### Root Cause
When the terminal is in mouse mode, we send escape sequences to report
scroll events to the application. The bug was in `scroll_report()`:

https://github.com/zed-industries/zed/blob/ca478226677e5f7190a5d8933277522780faaaf7/crates/terminal/src/terminal.rs#L1983-L1988

That `max(scroll_lines, 1)` meant we'd send **at least 1 scroll event
even when `scroll_lines` was 0**.

https://github.com/zed-industries/zed/blob/ca478226677e5f7190a5d8933277522780faaaf7/crates/terminal/src/mappings/mouse.rs#L96

On macOS, trackpad gestures fire many small pixel deltas due to scroll
acceleration. Each tiny movement triggered a scroll event, even though
we hadn't accumulated enough pixels for a full line yet. This is a known
issue alacritty/alacritty#2869 - macOS sends fractional line deltas
(like 0.1) instead of whole lines.

### The Fix
Don't send mouse reports when no full line has accumulated

This aligns with Alacritty's approach - accumulate partial scroll
amounts and only report when complete lines are ready.

https://github.com/alacritty/alacritty/blob/6ee6e53ee3457c24137f117237b0ff1d84f6f836/alacritty/src/input/mod.rs#L700-L730

### Testing
Tested trackpad scrolling in:
- tmux (pane navigation, scrollback)
- neovim (buffer scrolling)
- opencode (TUI navigation)
All scroll smoothly now.

### Demo
The demo shows the behavior of the scrolling. I can go fast or I can go
slow


https://github.com/user-attachments/assets/14bfc2f4-f286-4341-bf55-4ced894d63f9

Release Notes:

- Fixed trackpad scrolling being too fast in terminal applications with
mouse mode enabled (tmux, neovim, opencode, etc.)

When focus is on a dock panel that doesn't contain a pane (e.g., project
panel), `pane::CloseActiveItem` will now close the active item in the center
pane instead of doing nothing.

This allows users to bind, for example, `cmd-w` to `pane::CloseActiveItem` 
and have it work consistently regardless of whether focus is on a dock 
panel or the editor.

Closes #45261

Release Notes:

- Improved `pane::CloseActiveItem` to close center pane items even when
focus is on a dock panel like the project panel or outline panel

---------

Co-authored-by: dino <dinojoaocosta@gmail.com>

This should slash our CI times a bit (1 minute or so)

Closes #ISSUE

Release Notes:

- N/A

Release Notes:

- N/A

Closes #46701

This ports the fixes from #46442 over to the JavaScript highlights,
which we forgot to do in that PR since the highlights are not shareable
and the fix was only applied to TSX... Hence, porting the fixes here
manually to solve the issue for good.

Release Notes:

- Fixed an issue where JSX components were highlighted too broadly,
causing normal HTML tags to be highlighted as such

The file is unused, empty and hasn't been touched in two years, hence
removing this.

Release Notes:

- N/A

The logic in `anchor_at_offset` and `to_offset` seems inverted when
checking character boundaries. `assert_char_boundary` returns `true`
when the offset IS valid, but the code was adjusting offsets when the
function returned `true` (valid) instead of `false` (invalid).

Release Notes:

- N/A

The `capture example` action now populates the markdown file with a noop
"Rejected Patch", so that you can easily specify the good and bad
output.

Release Notes:

- N/A

<img width="779" height="210" alt="SCR-20260116-qrif"
src="https://github.com/user-attachments/assets/13c84f20-8fe1-4e3a-9de6-8df1024c2c6c"
/>

In most languages, Zed will check 2-3 locations for language servers.
For instance, when opening a python file, zed looks for ruff in:

- project venv
- user's PATH
- location that zed installs language servers

The language server menu surfaces information that makes it easier to
gather data about your language server, I think offering a path for the
one being ran makes things more clear to the user.

That being said, Idk the best way to surface this. (@danilo-leal?)

Release Notes:

- Add language server path to a tooltip that is produced when hovering
on its status in the language server menu

While at it, annotate more functions that are potentially related to
language parsing in buffers.

Also, on macOS, in order to actually have callstack frames properly
recorded by Tracy, you need to manually run `dsymutil` on the binary.

Release Notes:

- N/A

Closes https://github.com/zed-industries/zed/issues/46953

This turned out to be a pretty deep rabbit hole, ultimately landing in
how GPUI didn't restore focus nicely when swapping window activation
states.

Release Notes:

- N/A

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

We added support for it in
https://github.com/zed-industries/zed/pull/45423. It’s already in
preview, but not yet in stable. So I’m going to keep this in my drafts
till then.

Release Notes:

- N/A

Release Notes:

- N/A

This reduces total code-size of the project crate by ~25%, and reduces
release build time by ~35s thanks to
@osiewicz's proposed fix https://github.com/smol-rs/async-task/issues/66

Release Notes:

- N/A

Co-authored-by: Piotr <piotr@zed.dev>

Closes #46516

The previous fix only worked for non-nested folds, whereas this one also
considers nested folds properly. Also makes this more straightforward to
read.

Release Notes:

- Fixed an issue where relative line numbering would break with nested
folds.

We were including changes due to Buffer.reload in the edit history.

Release Notes:

- N/A

---------

Co-authored-by: Oleksiy Syvokon <oleksiy.syvokon@gmail.com>
Co-authored-by: Agus Zubiaga <agus@zed.dev>
Co-authored-by: Ben Kunkle <ben@zed.dev>
Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>

Adds the ability to create a dev container definition from scratch.
Additionally, separates devcontainer logic out into its own crate, since
it was getting sufficiently complex to separate from the
`recent_projects` crate.

A screen recording of the modal experience:


https://github.com/user-attachments/assets/f6cf95e1-eb7b-4ca3-86c7-c1cbc26ca557


Release Notes:

- Added modal to initialize a dev container definition in the project
with `projects: initialize dev container`
- Added podman support for dev container actions with the `use_podman`
setting
- Improved devcontainer error handling

---------

Co-authored-by: Sam Coward <idoru42@gmail.com>

Previously, `always_confirm` patterns would force confirmation even when
`always_allow_tool_actions` was set to true. This was counterintuitive
since the global setting should provide a way to skip all confirmations.

The new precedence order is:
1. **`always_deny`** - still blocks for security
2. **`always_allow_tool_actions`** - when true, allows all non-denied
actions
3. **`always_confirm`** - prompts if `always_allow_tool_actions` is
false
4. **`always_allow`** - allows without prompting
5. **`default_mode`** - fallback behavior

This means setting `always_allow_tool_actions=true` will now skip
confirmation prompts from `always_confirm` patterns and override
`default_mode: Deny` settings, while still respecting `always_deny`
patterns for security.

(No release notes because granular tool permissions are still
feature-flagged.)

Release Notes:

- N/A

This aligns ty's behavior with ruff by checking for binaries in the
following order:

1. venv (from the Python toolchain's bin directory)
2. PATH
3. Zed-installed

Release Notes:

- ty: Added support for using venv-installed binary

This PR removes the Danger check for modifying prompts, as we no longer
need to account for these in Cloud.

Release Notes:

- N/A

<img width="449" height="559" alt="Screenshot 2026-01-16 at 4 52 12 PM"
src="https://github.com/user-attachments/assets/1b5583d7-9b90-46b1-a32f-9821543ea542"
/>

Release Notes:

- Add support for GPT-5.2-Codex via OpenAI API Key

Closes https://github.com/zed-industries/zed/issues/46420

Release Notes:

- Improved bracket colorization in Markdown files

Release Notes:

- N/A

Release Notes:

- N/A

Recursion here is unnecessary as we do not make use of the stack frames,
so iterating is even cheaper as we do not need to do any stack
bookkeeping either way.

Release Notes:

- N/A *or* Added/Fixed/Improved ...