This PR changes the way a horizontal margin is added in editors. It
removes the possibility to set a custom `horizontal_padding` for an
editor and utilizes the default `gutter_dimension` instead.

This change is made to ensure that no issues with soft-wrapping occurs
for any editor that has a `horizontal_margin` set (see #26893 for more
context on the implications here`. Furthermore, it ensures that the text
actually renders properly when scrolling horizontally and is not
cut-off.

### Horizontal padding:

| `main` | This PR |
| --- | --- |
| ![main
padding](https://github.com/user-attachments/assets/4e7ea020-f92d-4f28-8cc1-89d0b0350683)
| ![PR
padding](https://github.com/user-attachments/assets/a05bae17-c384-431b-bb79-a1fffe7a29d7)
|

### Editor horizontally scrolled:

| `main` | This PR |
| --- | --- |
| ![main
scrolled](https://github.com/user-attachments/assets/1a30156f-6c08-4cf9-94aa-9d087c0408cc)
| ![pr
scrolled](https://github.com/user-attachments/assets/d0daa72e-3b02-479b-aea0-41e1a376c567)
|

Notice the difference at the horizontal borders.

The margin added for the `edit_file_tool` was 4 pixels. The `descent`,
whilst not exactly, is roughly the same here and also scales with the
font size nicely. Furthermore, it seems that the
`gutter_dimensions.margin` should be present anyway, given the following
comment


https://github.com/zed-industries/zed/blob/0b00256f5884fd17b4f834730b31f365613f3683/crates/editor/src/element.rs#L6887-L6889

so ensuring this property is actually set and not 0 seems to be
reasonable given the circumstances.

Please note though that this will apply to all editors in the app.
Again, this seems like it should be the case anyway, just wanted to
mention this again.

Should the fix like this not be wanted, I can change this here so that
the `horizontal_margin` is better accounted for when soft-wrapping in an
editor. Feel free to let me know in this case.

Release Notes:

- N/A

This change enables fuzzy search on model providers and names. For
example, the query "z41" will match "zed/gpt-4.1".

Release Notes:

- Agent: Improved model selection with fuzzy search support

Release Notes:

- agent: Render edit tool error as markdown and allow selecting it

We were still using entry indexes to scroll, but the list now includes
the separators as items, so the indexes need to be translated

Release Notes:

- agent: Fix autoscrolling to history entry when navigating via keyboard

Fixes an issue introduced by #29959 which caused the message editor to
overflow from the agent panel bounds, making the bottom buttons
invisible when the editor was expanded (cmd+esc).

Fixing this required changing the base structure of the agent panel, but
things seem to work as expected:


https://github.com/user-attachments/assets/fc4c97fb-f7cb-4f54-a268-c30fbcb1649f


Release Notes:

- agent: Fix message editor's button positions when expanded

Closes #29072, #28390, 

Release Notes:

- AWS Bedrock: Fixed case where user couldn't delete manually added AWS
credentials.

---------

Co-authored-by: Marshall Bowers <git@maxdeviant.com>
Co-authored-by: Peter Tripp <peter@zed.dev>

As it felt untidy without it.

Release Notes:

- N/A

Cherry-picked Fix error when Copilot calls tools without arguments
(#30371)

Fixes https://github.com/zed-industries/zed/issues/30346

The model can output an empty string to indicate the absence of
arguments, which can't be parsed as a `serde_json::Value`. When that
happens, we now create an empty object instead on behalf of the model.

Release Notes:

- Fixed a bug that prevented Copilot models from calling the
`diagnostic` tool.

Co-authored-by: Antonio Scandurra <me@as-cii.com>

Cherry-picked Include `EditAgent`'s raw output when inspecting thread
(#30337)

This allows us to debug the raw edits that were generated when people
report feedback, when running evals and when opening the thread as
Markdown.

Release Notes:

- Improved debug output for agent threads.

Co-authored-by: Antonio Scandurra <me@as-cii.com>

Cherry-picked Make `copilot::SignIn` open sign-in modal when needed
(#30239)

Also:

* Makes sign out show status notifications and errors.
* Reinstall now prompts for sign-in after start.

Addresses some of #29250, but not all of it.

Release Notes:

- N/A

Co-authored-by: Michael Sloan <michael@zed.dev>

Cherry-picked agent: Show checkmark for current profile, not default
profile (#30314)

Closes #ISSUE

Release Notes:

- agent: Fixed a bug that caused the profile selector to display a
checkmark next to the wrong profile.

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

Cherry-picked Restyle notification close control (#30262)

Follow-up of https://github.com/zed-industries/zed/pull/30015

Merges suppress and close buttons into one, with `shift` changing the
state and showing different tooltips.
Currently, there's no tooltip for notification suppress action, hence
none is displayed in the video:



https://github.com/user-attachments/assets/678c4d76-a86e-4fe9-8d7b-92996470a8a8

Release Notes:

- N/A

Co-authored-by: Kirill Bulatov <kirill@zed.dev>

This PR improves the subscription states in the Agent configuration view
to the new billing system.

Zed Free (legacy):

<img width="638" alt="Screenshot 2025-05-08 at 8 42 59 AM"
src="https://github.com/user-attachments/assets/7b62d4c1-2a9c-4c6a-aa8f-060730b6d7b3"
/>

Zed Free (new):

<img width="640" alt="Screenshot 2025-05-08 at 8 43 56 AM"
src="https://github.com/user-attachments/assets/8a48448e-813e-4633-955d-623d3e6d603c"
/>

Zed Pro trial:

<img width="641" alt="Screenshot 2025-05-08 at 8 45 52 AM"
src="https://github.com/user-attachments/assets/1ec7ee62-e954-48e7-8447-4584527307c9"
/>

Zed Pro:

<img width="636" alt="Screenshot 2025-05-08 at 8 47 21 AM"
src="https://github.com/user-attachments/assets/f934b2e3-0943-4b78-b8dc-0a31e731d8fb"
/>

Release Notes:

- agent: Improved the subscription-related information in the
configuration view.

tiktoken_rs is a bit behind (and even upstream tiktoken doesn't have all
of these models)

We were incorrectly using the cl100k tokenizer for some models that
actually use the o200k tokenizers. So that is updated.

I also made the match arms specific so that we do a better job of
catching whether or not tiktoken-rs accurately supports new models we
add in.

I will also do a PR upstream to see if we can move some of this logic
back out if tiktoken better supports the newer models.

Release Notes:

- Improved tokenizer support for openai models.

Release Notes:

- Improved latency when the agent applies edits.

Cherry-picked debugger/extensions: Revert changes to extension store
related to language config (#30225)

Revert #29945 

Release Notes:

- Fixed extension suggestions popping up over and over for recommended
extensions like Ruby or Nix.

---------

Co-authored-by: Conrad <conrad@zed.dev>

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

This PR renames a number of constructs in the `agent` crate from the
"Assistant" terminology to "Agent".

Not comprehensive, but it's a start.

Release Notes:

- N/A

This PR removes the `assistant` crate, as it is no longer used.

Release Notes:

- N/A

cc @danilo-leal 

Release Notes:

- N/A

Co-authored-by: Danilo Leal <daniloleal09@gmail.com>

Makes it easier to review the Agent edits since more of the previous
edits will be visible on screen.

Release Notes:

- N/A

Closes #30056

Apparently the API supports the "default" field now, so we can remove
that transformation.
However, optional is not supported

See https://ai.google.dev/api/caching#Schema

Release Notes:

- agent: Improve tool schema compatibility for Gemini models

Release Notes:

- Added `mistral-medium` to the Mistral provider.

When deciding if a model supports tools or not, we weren't reading from
the configured model in a given thread.

This also stores the profile on the thread, which matches the behavior
of the Model and Max Mode, which we also already store per thread.

Hopefully this helps alleviate some confusion.

Release Notes:

- agent: Save profile selection per-Agent thread

Cherry-picked Fix workspace update notifications not being suppressed
(#30180)

Follow-up of https://github.com/zed-industries/zed/pull/30015

Release Notes:

- N/A

Co-authored-by: Kirill Bulatov <kirill@zed.dev>

Cherry-picked Better match path-like strings in terminal (#30087)

Start to capture `foo/bar:20:in`-like strings as valid pointers to line
20 in a file

Closes https://github.com/zed-industries/zed/issues/28194

Release Notes:

- Fixed terminal cmd-click not registering `foo/bar:20:in`-like paths

Co-authored-by: Kirill Bulatov <kirill@zed.dev>

Cherry-picked Do not flicker when switching cmd-hovered words in
terminal (#30098)

Closes https://github.com/zed-industries/zed/issues/25110



https://github.com/user-attachments/assets/4624c256-8dfb-48eb-a726-6cf130d946da

Terminal may update its hovered word way before reporting it to the
terminal view, and that processing the file check later.
Hence, store the terminal hover data in the terminal view and avoid
highlights when it's different from what the terminal has (as the source
of truth here).

In addition, now only does hover refreshes when the terminal hover
actually changes, not on every event report.

Release Notes:

- Fixed underline flicker when switching cmd-hovered words in terminal

Co-authored-by: Kirill Bulatov <kirill@zed.dev>

Cherry-picked Add a way to clear activity indicator (#30156)

Follow-up of https://github.com/zed-industries/zed/pull/30015

* Restyles the dismiss and close buttons a bit: change the dismiss icon
and add tooltips with the bindings to both
* Allows ESC to clear any status that's in the activity indicator now,
if all notifications are cleared: this won't suppress any further status
additions though, so statuses may resurface later

Release Notes:

- Added a way to clear activity indicator

Co-authored-by: Kirill Bulatov <kirill@zed.dev>

### Todo

* [x] Allow opening `ssh://username@host:/` from the CLI
* [x] Allow selecting `/` in the `open path` picker
* [x] Allow selecting the home directory in the `open path` picker

Release Notes:

- Changed the initial state of the SSH project picker to show the full
path to your home directory on the remote machine, instead of `~`.
- Added the ability to open `/` as a project folder over SSH

---------

Co-authored-by: Agus Zubiaga <hi@aguz.me>

Release Notes:

- N/A

Copilot chat still returns a 400 if the dummy tool uses the `{}` schema.

This is a follow-up to https://github.com/zed-industries/zed/pull/30007.

Release Notes:

- Fixed a bug where agent edits would fail when using GitHub Copilot
Chat.

Co-authored-by: Agus Zubiaga <hi@aguz.me>

Tone down the grid background a bit more so text is more legible.

Release Notes:

- N/A

Release Notes:

- agent: Fix "consecutive tool use limit" callout spacing

Closes #30091
Follow-up to #29958

This PR fixes the profile menu flickering due to the documentation aside
after updating the agent dock position over the settings file.

The problem arose because the `documentation_side` could get out of sync
with the actual agent panel dock position. The `documentation_side` was
only updated whenever the user changed the agent panel position using
the UI, but not when updating the position in the settings file.

You can reproduce this easily by changing the `agent.dock` position to
the opposite site in your settings, which will make the profile menu
flicker again in some scenarios due to the de-sync.

This PR fixes this behavior by computing the position during render,
thus the actual set panel position and the documentation position can
never get out of sync

Release Notes:

- Fixed the agent profile menu flickering after updating the assistant
panel dock position in the settings.

This PR updates the copy around the Zed Pro description to be more
accurate.

Release Notes:

- agent: Updated some copy about Zed Pro in the configuration view.

Updated terms for Agent panel launch.

Release Notes:

- N/A

This PR makes it so we send up an `x-zed-version` header with the
client's version when making a request to llm.zed.dev for edit
predictions and completions.

Release Notes:

- N/A

Turns out `naive_local` doesn't actually offset a `DateTime<Utc>` to the
local timezone before creating a `NaiveDate`.

Release Notes:

- agent: Use correct timezone for thread history separators

Release Notes:

- Fixed a bug that would prevent the agent from working over SSH.

---------

Co-authored-by: Nathan Sobo <nathan@zed.dev>
Co-authored-by: Richard Feldman <oss@rtfeldman.com>
Co-authored-by: Max Brunsfeld <maxbrunsfeld@gmail.com>
Co-authored-by: Cole Miller <m@cole-miller.net>

Release Notes:

- N/A

---------

Co-authored-by: Julia Ryan <juliaryan3.14@gmail.com>

Also swapped out the svgs for `ThumbsDown` and `ThumbsUp`, and added
`DocumentText`.

Release Notes:

- N/A

<img width="458" alt="Screenshot 2025-05-07 at 9 37 39 AM"
src="https://github.com/user-attachments/assets/80f8a9b8-6a13-4e84-b91d-140e11475638"
/>

<img width="603" alt="Screenshot 2025-05-07 at 9 37 33 AM"
src="https://github.com/user-attachments/assets/7fe67a68-3885-4a0e-a282-aad37e92068b"
/>


Release Notes:

- Ollama models no longer require the supports_tools field in settings
(defaults to false)

---------

Co-authored-by: Antonio Scandurra <me@as-cii.com>

Cherry-picked Fix zero-sized message editors when context strip is empty
(#30079)

Release Notes:

- Fixed a bug that would cause the message composer in the agent panel
to not render when the context strip was empty.

Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>
Co-authored-by: Nathan Sobo <nathan@zed.dev>

Co-authored-by: Antonio Scandurra <me@as-cii.com>
Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>
Co-authored-by: Nathan Sobo <nathan@zed.dev>

Cherry-picked Avoid panic when opening thread as markdown in non-local
project (#30061)

Right now `agent: open active thread as markdown` will always panic when
you try to use it over collab or when SSH remoting. This PR makes it log
an error instead (we should follow up by restoring full remote support).

Release Notes:

- Prevented `agent: open active thread as markdown` from panicking when
used in a non-local project.

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

This PR removes all of the feature flag checks related to the Agent.

Tried to do this in the least invasive way possible; we can follow up
with a full removal.

Release Notes:

- N/A