- **extensions_ui: Fix duplicated button element IDs preventing
uninstall (#47745)**
- **acp: Add agent server extension deprecation banner (#47817)**
- **acp: Add upsell banner for built-in agents in registry page
(#47853)**

Release Notes:

- Fixed extension uninstall button not working when an upgrade is
available.

---------

Co-authored-by: Dream <42954461+eureka928@users.noreply.github.com>
Co-authored-by: Marshall Bowers <git@maxdeviant.com>
Co-authored-by: Danilo Leal <67129314+danilo-leal@users.noreply.github.com>

Closes #46784

This panic was caused by a double borrow when the pane an item was moved too is the same pane the item originate from. The fix was using a window.defer to avoid the double lease, instead of updating in a Context<Pane>

Release Notes:

---------

Co-authored-by: Anthony Eid <anthony@zed.dev>

Cherry-pick of #47835 to preview

----
- **Revert "ui: Dismiss context menus when window loses focus
(#46866)"**
- **Revert "Preserve and restore focus across window activation cycles
(#47044)"**

Closes #ISSUE

Release Notes:

- (preview only) Fixed typing emoji using the macOS system palette
(cmd-ctrl-space)

Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>

Cherry-pick of #47788 to preview

----
This PR adds some UI improvements to the ACP registry UI, already
including the URL for the soon-to-be-released blog post. I'm also
renaming the action to open the page from `zed: agent registry` to `zed:
acp registry`.

Release Notes:

- N/A

Co-authored-by: Danilo Leal <67129314+danilo-leal@users.noreply.github.com>

Cherry-pick of #47700 to preview

----
Closes ZED-43V
Closes ZED-3VK

Release Notes:

- N/A

Co-authored-by: Cole Miller <cole@zed.dev>

Cherry-pick of #46134 to preview

----
Closes #46104

Release Notes: 

- Fixed language injections sticking after language comment removed

---

This is working well for the Python SQL comments


![comment_sync_demo](https://github.com/user-attachments/assets/ba5160ce-4867-4b49-9f44-141ddc2730a1)

```python
from pyspark.sql import SparkSession
spark = SparkSession.builder.getOrCreate()

# sql
cmd = "SELECT col1, col2 FROM tbl"

df = spark.sql(  # sql
    """
    WITH cte AS (
        SELECT col1, col2, COUNT(*) AS n
        FROM tbl
        GROUP BY ALL
    )
    SELECT * FROM cte
    """
)
```


And go comments


![comment_sync_demo_go_updated](https://github.com/user-attachments/assets/73e81a94-e8fc-4dc3-82f8-09e966d35bc9)


```go
package main

func test() {
    var _ = /* sql */ `SELECT id, name FROM products`
    var _ = /* sql */ "SELECT id, name FROM products"

    var _ = /* sql */ `SELECT id, name FROM products`

    var _ = /* sql*/ "SELECT id, name FROM products"
}
```

Note: `f04b252dd9` was a simpler implementation that worked for
non-inline comments in Python, but produced the following Go behavior


![comment_sync_demo_go](https://github.com/user-attachments/assets/40336705-9799-4b0a-b457-4974d172e1c8)

---------

Co-authored-by: Joseph T. Lyons <JosephTLyons@gmail.com>

Co-authored-by: Jeff Brennan <42007840+jeffbrennan@users.noreply.github.com>
Co-authored-by: Joseph T. Lyons <JosephTLyons@gmail.com>

Cherry-pick of #47783 to preview

----
Closes #ISSUE

Release Notes:

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

Co-authored-by: Ben Kunkle <ben@zed.dev>

Closes #ISSUE

Release Notes:

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

Cherry-pick of #47755 to preview

----
Release Notes:

- Fixed mistyping the ssh password in the askpass prompt on windows
locking you out of retyping the correct one

Co-authored-by: Lukas Wirth <lukas@zed.dev>

Release Notes:

- N/A

Cherry-pick of #47683 to preview

----
Closes ZED-4JM

Release Notes:

- N/A

---------

Co-authored-by: Cole Miller <cole@zed.dev>

Cherry-pick of #47674 to preview

----
Prevents unbounded grown of the `hang_traces` directory.

Release Notes:

- Fixed excessive disk space usage from the `hang_traces` directory.

Co-authored-by: Cole Miller <cole@zed.dev>

Cherry-pick of #47660 to preview

----
Was changed by mistake

Release Notes:

- N/A

Co-authored-by: Lukas Wirth <me@lukaswirth.dev>

Co-authored-by: John Tur <john-tur@outlook.com>
Co-authored-by: Lukas Wirth <me@lukaswirth.dev>

Cherry-pick of #47642 to preview

----
Allows for the acp adapter to use terminal auth for this as well

Release Notes:

- N/A

Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>

Cherry-pick of #47534 to preview

----
Closes #47303 

The command quoting for `cmd` shell was first introduced (at least in
this case) in PR #41216 three months ago:


https://github.com/zed-industries/zed/blob/3d4582d4dc9145270650e12f9ce5a534b888f4a2/crates/project/src/terminals.rs#L202-L210

And a month ago, PR #42382 added command quoting for `cmd` in a
different place:


https://github.com/zed-industries/zed/blob/3d4582d4dc9145270650e12f9ce5a534b888f4a2/crates/util/src/shell.rs#L413-L434

As a result, the command is now quoted twice when using `cmd`. `cmd`
interprets the entire double-quoted string (e.g., ""command & args"") as
a single (invalid) executable name, and this would lead to an error like
“The system cannot find the path specified” in #47303 .

The solution is to remove the redundant manual quoting in `terminals.rs`
and rely on the centralized logic in `util/src/shell.rs`.

/cc @Veykril @reflectronic 

Release Notes:

- Fixed a bug where terminal tasks failed to start on Windows when using
`cmd.exe`.

Co-authored-by: Xin Zhao <zx0@mail.ustc.edu.cn>

Cherry-pick of #47549 to preview

----
## Summary

Fixes #47540 - Anthropic Claude models not appearing in GitHub Copilot
Chat model picker.

## Problem

Users reported that Anthropic Claude models (Claude Sonnet 4, Claude
Opus 4, etc.) were not appearing in the model picker when using GitHub
Copilot Chat, even though:
- The GitHub Copilot API returns these models
- The models have `model_picker_enabled: true`
- Users have valid Copilot subscriptions with access to these models

## Root Cause

The issue was in the `ModelSupportedEndpoint` enum deserialization. The
enum only defined two variants:

```rust
pub enum ModelSupportedEndpoint {
    #[serde(rename = "/chat/completions")]
    ChatCompletions,
    #[serde(rename = "/responses")]
    Responses,
}
```

Anthropic Claude models use the `/v1/messages` endpoint, which wasn't
defined. When deserializing the API response, serde failed with:

```
Error("unknown variant `/v1/messages`, expected `/chat/completions` or `/responses`")
```

Because the crate uses resilient deserialization via
`deserialize_models_skip_errors()`, the entire Claude model was silently
skipped rather than causing a hard failure. This meant users saw no
error - the models simply didn't appear.

## Solution

### 1. Added `/v1/messages` endpoint variant

```rust
pub enum ModelSupportedEndpoint {
    #[serde(rename = "/chat/completions")]
    ChatCompletions,
    #[serde(rename = "/responses")]
    Responses,
    #[serde(rename = "/v1/messages")]
    Messages,  // NEW: Anthropic models use this endpoint
    #[serde(other)]
    Unknown,   // NEW: Future-proofing for unknown endpoints
}
```

### 2. Removed incorrect `dedup_by()` call

The previous code deduplicated models by family:

```rust
.dedup_by(|a, b| a.capabilities.family == b.capabilities.family)
```

This incorrectly filtered out model variants that share the same family
(e.g., `claude-sonnet-4` and `claude-sonnet-4-thinking`). Removed this
call to preserve all model variants.

### 3. Removed unused import

Removed `use itertools::Itertools;` which was only used for the
now-removed `dedup_by()`.

## Changes

| File | Change |
|------|--------|
| `crates/copilot_chat/src/copilot_chat.rs` | Added `Messages` and
`Unknown` variants to `ModelSupportedEndpoint` enum |
| `crates/copilot_chat/src/copilot_chat.rs` | Removed `.dedup_by()` call
that incorrectly filtered models |
| `crates/copilot_chat/src/copilot_chat.rs` | Removed unused
`itertools::Itertools` import |
| `crates/copilot_chat/src/copilot_chat.rs` | Added 8 new unit tests |

## Test Coverage

Added 8 new unit tests to ensure the fix works and prevent regression:

| Test | Purpose |
|------|---------|
| `test_models_with_pending_policy_deserialize` | Verifies models with
non-"enabled" policy states deserialize correctly (they're filtered
later) |
| `test_multiple_anthropic_models_preserved` | Verifies multiple Claude
models are not incorrectly deduplicated |
| `test_models_with_same_family_both_preserved` | Verifies models
sharing the same family (e.g., thinking variants) are both preserved |
| `test_mixed_vendor_models_all_preserved` | Verifies models from
different vendors (OpenAI, Anthropic, Google) are all preserved |
| `test_model_with_messages_endpoint_deserializes` | **Critical test**:
Verifies `/v1/messages` endpoint deserializes correctly |
| `test_model_with_unknown_endpoint_deserializes` | Verifies unknown
future endpoints deserialize to `Unknown` variant |
| `test_model_with_multiple_endpoints` | Verifies models with multiple
endpoints deserialize correctly |
| `test_supports_response_method` | Verifies the `supports_response()`
method logic for endpoint routing |

### Test Results

```
running 10 tests
test tests::test_model_with_messages_endpoint_deserializes ... ok
test tests::test_model_with_multiple_endpoints ... ok
test tests::test_model_with_unknown_endpoint_deserializes ... ok
test tests::test_models_with_pending_policy_deserialize ... ok
test tests::test_models_with_same_family_both_preserved ... ok
test tests::test_mixed_vendor_models_all_preserved ... ok
test tests::test_multiple_anthropic_models_preserved ... ok
test tests::test_resilient_model_schema_deserialize ... ok
test tests::test_supports_response_method ... ok
test tests::test_unknown_vendor_resilience ... ok

test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
```

## How to Test Manually

1. Sign in to GitHub Copilot in Zed
2. Open the model picker (Agent panel → model selector dropdown)
3. Verify that Anthropic Claude models appear in the list:
   - Claude Sonnet 4
   - Claude Opus 4
   - Other Claude variants (if enabled in your GitHub Copilot settings)

## Checklist

- [x] Code compiles without errors
- [x] `./script/clippy --package copilot_chat` passes with no warnings
- [x] All unit tests pass
- [x] Change is focused on a single bug fix
- [x] No unrelated refactoring or feature additions


<img width="320" height="400" alt="Screenshot 2026-01-24 at 11 57 21 PM"

src="https://github.com/user-attachments/assets/d5e17e1b-da80-4f4d-a218-d50d35114a21"
/>


Release Notes:

- Fixed Anthropic models not appearing in the Copilot Chat model picker

---------

Co-authored-by: Piotr Osiewicz
<24362066+osiewicz@users.noreply.github.com>

Co-authored-by: Anil Pai <anilpai@users.noreply.github.com>
Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>

Cherry-pick of #47564 to preview

----
Release Notes:

- N/A

Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>

Cherry-pick of #47496 to preview

----
Release Notes:

- N/A

Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>

Cherry-pick of #47327 to preview

----
Closes #47157

This panic happened because the editor was using `window.content_mask`
to get the visible bounds, which had a negative value for its height in
some cases.

This happened for three reasons:

1. `Bounds::from_corners` returns a negative size if callers pass in
corners where `bottom_right < top_left`. I originally wanted to add
error checking to this function but didn't, because it might be better
to move the error checking higher up. For now I'm going to push a fix
and figure out a better solution later

2. `Bounds::intersect` could return negative-sized bounds when the two
bounds didn't overlap, instead of returning a zero sized bounds.

3. `Style::paint` sometimes passed invalid corner values to
`Bounds::from_corners` (where the computed bottom-right was above/left
of the top-left).

Release Notes:

- editor: Fix a crash that could happen when editor visible line height
is zero

---------

Co-authored-by: Zed Zippy
<234243425+zed-zippy[bot]@users.noreply.github.com>

Co-authored-by: Anthony Eid <56899983+Anthony-Eid@users.noreply.github.com>
Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>

Cherry-pick of #47473 to preview

----
Users had trouble signing in due to us relying on the Copilot::global
being set, which was never the case. We've decided to use a dedicated
LSP instance just for handling auth of Copilot Chat and other goodies.
That instance is subscribed to by local Copilot instances for projects.
When the Auth instance changes it's state, local instances are prompted
to re-check their own sign in status.

Closes #47352

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

Release Notes:

- Fixed authentication issues with Copilot.

---------

Co-authored-by: dino <dinojoaocosta@gmail.com>
Co-authored-by: Zed Zippy
<234243425+zed-zippy[bot]@users.noreply.github.com>

Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>
Co-authored-by: dino <dinojoaocosta@gmail.com>
Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>

Cherry-pick of #47484 to preview

----
Co-authored-by: Marshall Bowers <marshall@zed.dev>

Closes #ISSUE

Release Notes:

- N/A

Co-authored-by: Marshall Bowers <marshall@zed.dev>

Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>
Co-authored-by: Marshall Bowers <marshall@zed.dev>

Cherry-pick of #47438 to preview

----
Adds a new setting to GitHub Copilot to toggle the Next Edit Suggestions
feature, it is enabled by default.

## Motivations
Due to some current usability issues with this feature, see #46880, and
some personal anecdotes of using it, it is currently rough to utilize,
so this gives the option to disable it.

## Related
- #47071 
- #30124
- #44486
## Release Notes
- Adds the ability to disable GitHub Copilot's Next Edit Suggestions
feature.
## User Interface


![image](https://github.com/user-attachments/assets/5a3d7166-68dd-4f5b-a220-0a9bd9282cd5)
## Text Example
The text example will be adding a `z` variable to a `Point3D` class in
TypeScript.
### With Next Edit Suggestions
In this example I am able to just press auto-complete (press TAB) 3x.
```ts
class Point3D {
    x: number;
    y: number;
    z: number; // <-- Cursor before z: suggested

    constructor(x: number, 
                y: number
                , z: number // <-- Next Suggestion
                ) { 
        this.x = x;
        this.y = y;
        this.z = z; // <-- Last Suggestion
    }
}
```
### Without Next Edit Suggestions
```ts
class Point3D {
    x: number;
    y: number;
    z: number; // <-- Cursor before z: the only suggestion

    constructor(x: number, y: number) {
        this.x = x;
        this.y = y;
    }
}
```

Co-authored-by: André Eriksson <andreeriksson444@gmail.com>

Cherry-pick of #47464 to preview

----
Release Notes:

- acp: Add the ability to install new Agents via the ACP Registry

Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>

Cherry-pick of #46848 to preview

----
Adds a new "Agent Panel Error Shown" telemetry event that fires when
users see errors in the agent panel. For errors from external ACP agents
(like Claude Code), we capture additional details.

Previously, we had no visibility into what errors users were
encountering in the agent panel. This made it difficult to diagnose
issues, especially with external agents.

The new telemetry event includes:
- `agent` — The agent telemetry ID
- `session_id` — The session ID
- `kind` — Error category (payment_required, authentication_required,
refusal, other, etc.)
- `acp_error_code` — The ACP error code when available (e.g.,
"InternalError")
- `acp_error_message` — The ACP error message when available

Release Notes:

- N/A

---------

Co-authored-by: Michael Benfield <mbenfield@zed.dev>

Co-authored-by: Katie Geer <katie@zed.dev>
Co-authored-by: Michael Benfield <mbenfield@zed.dev>

Cherry-pick of #47295 to preview

----
Some users were a bit confused that the history between zed agent + text
threads is split up now. Making it a bit clearer for the users still
using text threads which history they are currently looking at.

Release Notes:

- N/A

Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>

Cherry-pick of #47369 to preview

----
Release Notes:

- N/A

Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>

Cherry-pick of #47367 to preview

----
Before we were checking it even if you weren't using registry agents.
Now happens less frfrequently, and only when you are actually using
registry agents.

Release Notes:

- N/A

Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>

Release Notes:

- N/A

Fixes CI failures when the target dir is 0GB in size, which causes
`expr` to output a non-zero exit code per the posix spec.

See exit status section of
https://www.man7.org/linux/man-pages/man1/expr.1p.html

Release Notes:

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

This makes the ordering of files consistent with the Git diff view.

Release Notes:

- N/A

- Improves spacing between consecutive calls
- Only show disclosure button (i.e., ability to expand the card) when
there's actual content
- Fix font size being bigger than the actual thread
- Add gradient overlay to communicate that you can't scroll within the
card (expanding the subagent call will allow that in the near future)

Here's the result of it all, roughly:

<img width="600" height="890" alt="Screenshot 2026-01-21 at 12  26@2x"
src="https://github.com/user-attachments/assets/e5e4a544-611d-48f5-b00d-f69e869726c5"
/>

Release Notes:

- N/A

Release Notes:

- N/A

Adding some serde magic to avoid adding a bunch of empty fields to the
settings file.

Release Notes:

- N/A

Closes #45075

The cyan terminal colors in One Light were incorrectly set to the same
values as green, making them indistinguishable. This was introduced in
https://github.com/zed-industries/zed/pull/44912

Release Notes:

- Fixed terminal cyan color displaying as green in One Light theme

This PR fixes `shift-e` being used for triggering edits in queued
messages, which breaks writing simple capital E in the editor.

Release Notes:

- N/A

Closes #47098 

The root cause of this issue is related to how `Poetry` (and the
upstream `pet-poetry` library) handles path hashing. While perhaps it's
an upstream behavior, we can easily fix it on the Zed side.

The related code are

https://github.com/zed-industries/zed/blob/7ce845210d3af82a57a7518e0abe8c167d60cc6a/crates/languages/src/python.rs#L1181-L1211

In my debugging, I found that `worktree_root` takes the form
`/home/user/project`, but `config.workspace_directories` often ends up
as `/home/user/project/`(with a trailing slash). Normally this wouldn't
be an issue, but `Poetry` generates environment names based on the hash
of the absolute path. Since the hashes for `/home/user/project` and
`/home/user/project/` are different, `pet-poetry` fails to find the
environment.

The fix is straightforward: we just need to ensure the trailing `/` is
removed so the hashes match.

Release Notes:

- Fixed poetry environment not discovered on linux

Fixes an unintended behavioral change from #40838.

Release Notes:

- Fixed "Add Folder to Project" and "Remove from Project" menu items
being incorrectly hidden on remote projects.

This makes delta-chrF computation ~50 faster.

Release Notes:

- N/A

Closes #45772

Release Notes:

- Fixed project search include/exclude filters not working correctly in
remote project with multiple folders.

Release Notes:

- N/A

The settings store separate themes for Light and Dark modes. When the
user clicks a theme, the code uses the system appearance to decide which
to update, rather than the mode the user selected in the UI. This causes
the wrong theme to be saved when the system appearance differs from the
selected mode.

<img width="746" height="324" alt="image"
src="https://github.com/user-attachments/assets/b8f8d937-172d-4da8-b572-4f3db7f1de9a"
/>

Release Notes:

- Fixed onboarding page sometimes rendering the wrong theme

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: MrSubidubi <finn@zed.dev>

Support for Kimi K2 Thinking

Release Notes:

- Added support for thinking traces when using OpenAI-API-compatible AI providers

---------

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

Release Notes:

- N/A

Align the behavior with built-in and custom agents

Release Notes:

- N/A