This PR updates the extension API to use structured slash command
completions instead of plain strings.

This allows slash commands defined in extensions to take advantage of
the improvements made in #13876.

Release Notes:

- N/A

This PR cleans up the building of completions in the `/docs` command a
bit after #13876.

Release Notes:

- N/A

This PR improves the completions for arguments in the `/docs` slash
command.

We achieved this by extending the `complete_argument` method on the
`SlashCommand` trait to return a `Vec<ArgumentCompletion>` instead of a
`Vec<String>`.

In addition to the completion `label`, `ArgumentCompletion` has two new
fields that are can be used to customize the completion behavior:

- `new_text`: The actual text that will be inserted when the completion
is accepted, which may be different from what is shown by the completion
label.
- `run_command`: Whether the command is run when the completion is
accepted. This can be set to `false` to allow accepting a completion
without running the command.

Release Notes:

- N/A

---------

Co-authored-by: Antonio <antonio@zed.dev>

This PR replaces the usage of `unzip` for extracting `.zip` files
downloaded by extensions with extraction via a library.

This will allow us to extract `.zip` files even if `unzip` is not
available (e.g., on Windows).

Release Notes:

- Removed the need for `unzip` to be present on the system to extract
`.zip` files downloaded by extensions.

This PR removes a stray `println!` that was spamming stdout with the
window decorations in use.

Release Notes:

- N/A

Initial runtimes UI panel. The main draw here is that all message
subscription occurs with two background tasks that run for the life of
the kernel. Follow on to #12062

* [x] Disable previous cmd-enter behavior only if runtimes are enabled
in settings
* [x] Only show the runtimes panel if it is enabled via settings
* [x] Create clean UI for the current sessions

### Running Kernels UI

<img width="205" alt="image"
src="https://github.com/zed-industries/zed/assets/836375/814ae79b-0807-4e23-bc95-77ce64f9d732">

* [x] List running kernels
* [x] Implement shutdown
* [x] Delete connection file on `drop` of `RunningKernel`
* [x] Implement interrupt

#### Project-specific Kernel Settings

- [x] Modify JupyterSettings to include a `kernel_selections` field
(`HashMap<String, String>`).
- [x] Implement saving and loading of kernel selections to/from
`.zed/settings.json` (by default, rather than global settings?)

#### Kernel Selection Persistence

- [x] Save the selected kernel for each language when the user makes a
choice.
- [x] Load these selections when the RuntimePanel is initialized.

#### Use Selected Kernels

- [x] Modify kernel launch to use the selected kernel for the detected
language.
- [x] Fallback to default behavior if no selection is made.

### Empty states

- [x] Create helpful UI for when the user has 0 kernels they can launch
and/or 0 kernels running

<img width="694" alt="image"
src="https://github.com/zed-industries/zed/assets/836375/d6a75939-e4e4-40fb-80fe-014da041cc3c">

## Future work

### Kernel Discovery

- Improve the kernel discovery process to handle various installation
methods (system, virtualenv, poetry, etc.).
- Create a way to refresh the available kernels on demand

### Documentation:

- Update documentation to explain how users can configure kernels for
their projects.
- Provide examples of .zed/settings.json configurations for kernel
selection.

### Kernel Selection UI

- Implement a new section in the RuntimePanel to display available
kernels.
- Group on the language name from the kernel specification 
- Create a dropdown for each language group to select the default
kernel.


Release Notes:

- N/A

---------

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

Fixes: #13720.

Co-authored-by: Antonio Scandurra <antonio@zed.dev>

Introduces the `ZED_WINDOW_DECORATIONS` env variable.

- Not set, defaulting to client-side decorations
- Value is "client": client-side decorations
- Value is "server": server-side decorations

I think it's good to have this escape-hatch next to all possible
detection mechanisms.

Release Notes:

- N/A

This PR bumps the OCaml extension to v0.0.2.

Changes:

- https://github.com/zed-industries/zed/pull/13834

Release Notes:

- N/A

Fixed the environment not being passed to ocaml lsp causing it to not
work with direnv based installs

Release Notes:

- N/A

As titled. The new example is consistent with the instructions in
"Configuring Zed". I verified that the example works as expected.

Release Notes:

- Update the instructions to set up external formatter for Python.

By leveraging the `_GTK_EDGE_CONSTRAINTS` atom we can get all four
booleans for the `Tiling` struct and figure out which side is free when
the window is tiled to half of the screen.

For the logic behind the `_GTK_EDGE_CONSTRAINTS` see:
-
https://github.com/GNOME/mutter/blob/8e9d13aa3b3baa099ca32bbcb10afb4d9eea4460/src/x11/window-x11.c#L65-L75
-
https://github.com/GNOME/mutter/blob/8e9d13aa3b3baa099ca32bbcb10afb4d9eea4460/src/x11/window-x11.c#L1205-L1231

(I used Claude 3.5 Sonnet with our code and these pieces from `mutter`
to generate the Rust code, that was pretty sweet)

This fixes the gap in the middle when a GPUI window is tiled to the left
and another window to the right.

It's not _perfect_ but it looks a lot better.

Here's a diff that makes it look better:

```diff
diff --git a/crates/gpui/examples/window_shadow.rs b/crates/gpui/examples/window_shadow.rs
index 122231f6b..7fa29dadc 100644
--- a/crates/gpui/examples/window_shadow.rs
+++ b/crates/gpui/examples/window_shadow.rs
@@ -72,8 +72,8 @@ impl Render for WindowShadow {
                     .when(!(tiling.top || tiling.left), |div| div.rounded_tl(rounding))
                     .when(!tiling.top, |div| div.pt(shadow_size))
                     .when(!tiling.bottom, |div| div.pb(shadow_size))
-                    .when(!tiling.left, |div| div.pl(shadow_size))
-                    .when(!tiling.right, |div| div.pr(shadow_size))
+                    .when(!tiling.left, |div| div.pl(shadow_size - border_size))
+                    .when(!tiling.right, |div| div.pr(shadow_size - border_size))
                     .on_mouse_move(|_e, cx| cx.refresh())
                     .on_mouse_down(MouseButton::Left, move |e, cx| {
                         let size = cx.window_bounds().get_bounds().size;
```

But that makes it look weird on Wayland, so I didn't do it.

I think it's fine for now. Chromium looks bad and has a gap, so we're
already better.

## Before

![before_1](https://github.com/zed-industries/zed/assets/1185253/875c5cdd-c0be-4295-beb0-bb9ba5beaa52)


![before_2](https://github.com/zed-industries/zed/assets/1185253/0b96be70-4c34-4e99-aeb2-ab741171ad14)

## After

![after_1](https://github.com/zed-industries/zed/assets/1185253/aa51da77-daf1-4ef8-a33f-a83731e0c7e1)

![after_2](https://github.com/zed-industries/zed/assets/1185253/8ce7902d-90b6-4f06-ba2c-626e643abe56)


Release Notes:

- N/A

This PR refactors the completion providers to only process a maximum
amount of completion requests at a time.

Also started refactoring language model providers to use traits, so it's
easier to allow specifying multiple providers in the future.

Release Notes:

- N/A

This fixes the issue of a tooltip covering the thing that the button has
revealed.

It also mirrors what other UI frameworks do. Chrome on Linux behaves the
same, and Safari does the same thing on macOS.

It fixes this:

![Screenshot from 2024-07-05
12-39-22](https://github.com/zed-industries/zed/assets/1185253/51ce4347-d12f-463a-9adb-da031fe2f751)


Release Notes:

- N/A

https://doc.rust-lang.org/cargo/reference/environment-variables.html

Some people (myself included) set this variable to have a single
directory to clean up (or whatever reason one might have for having a
single `target` directory). This changes the linux scripts to respect
that

Release Notes:

- N/A

This has been bugging me for a while. If you create a new file and then
save it, the dialogue would show the home directory and not the folder
that you were in.

This fixes it.

Release Notes:

- N/A

The previous code lead to a ton of error messages from Blade on my X11
machine, even with *client-side decorations working well!*

As @someone13574 pointed out
[here](https://github.com/zed-industries/zed/pull/13611#issuecomment-2201685030)
things still work with this being false. And if someone changes a theme
with transparent background, then it will get set anyway. We just don't
do it by default.

And as @jansol pointed out
[here](https://github.com/zed-industries/zed/issues/5040#issuecomment-2096560629):

> On X11 it may be possible to configure a compositor to blur window
backgrounds but Zed has no way to influence that.

So we don't lose anything, I think, but get rid of a ton of error
messages in the logs.

Proof of shadows etc. still working:

![Screenshot from 2024-07-05
10-17-38](https://github.com/zed-industries/zed/assets/1185253/1216b38b-8011-46e7-b86f-c0f5fc3f6f64)



Release Notes:

- N/A

**Edit**:

This PR adds flushes to functions which should have an immediate affect.
I've observed it fixing the following bugs (but there are probably
more):

- The cursor not updating when just hovering.
- The window not maximising after clicking the full-screen button until
you move the mouse.
- The window not minimising after clicking the minimise button until you
move the mouse.

---

**Original content**:

Following #13646, the cursor style wouldn't change because the
`change_window_attributes` command wasn't being flushed. I guess it was
working before because something else was flushing it somewhere else so
it was never noticed.

I just added `check()` which flushes the command so that the cursor will
actually update when just hovering. Before you would need to interact
with the window so that something else could flush the command.

Release Notes:

- N/A

With the new window decorations resizing was _really_ laggy on my X11
machine.

Before:
- Click on window border (hitbox doesn't work properly, but that's
another issue)
- Drag and resize
- 4-5s nothing happens
- Window is resized

After:
- Click on window border
- Drag and resize
- Window is resized

I'm still not 100% sure on why this happens on my machine and not
Conrad's/Mikayla's, but seems like that GTK_EDGE_CONSTRAINTS atom is
sent when resizing.

The other thing that I can't explain is that we get a `ConfigureNotify`
when resizing, with the right size, but maybe not often enough?

Anyway, for now we'll go with this.

Release Notes:

- N/A

This PR adds Dart support to the docs, as it was one of the first-party
extensions that wasn't mentioned anywhere.

Release Notes:

- N/A

This PR updates the supported language docs and adds them to the sidebar
for better discoverability.

Release Notes:

- N/A

This PR updates the language pages in the docs to indicate whether the
support is available natively or provided by an extension.

Release Notes:

- N/A

Release Notes:

- Allows shift + scroll horizontal scrolling on X11 and Wayland.

[Screencast from 2024-06-29
17-17-59.webm](https://github.com/zed-industries/zed/assets/14155062/2cac77b9-ecc8-4ddb-b08d-b5d964c8dc84)

Now, it can run on windows.

![Screenshot 2024-07-04
173832](https://github.com/zed-industries/zed/assets/14981363/d3c17fe3-6e79-46cd-b9a3-f6655109463c)


Release Notes:

- N/A

<img width="1652" alt="image"
src="https://github.com/zed-industries/zed/assets/482957/8397ea87-51aa-4b69-85c7-bf963fe2b08a">

Release Notes:

- N/A

In the latest update, panel loading occasionally occurred randomly,
either before or after workspace deserialization due to their
asynchronous nature. This update addresses the issue by ensuring panels
restore their state based on serialized data, synchronizing their
loading with workspace deserialization.

Release Notes:

- Fixed [#9638](https://github.com/zed-industries/zed/issues/9638)
- Fixed [#12954](https://github.com/zed-industries/zed/issues/12954)

This PR removes the `ids` query parameter from the `GET /extensions`
endpoint, as we don't use it.

We originally added the query parameter in #9929 to facilitate
auto-updates. However, it was superseded by the `GET
/extensions/updates` endpoint in #10052.

There shouldn't be any Zed versions out in the wild that are using the
`ids` query parameter, as we added the endpoint on Thursday, March 28,
and replaced its usage with the new endpoint on Monday, April 1, before
the next Zed release.

Release Notes:

- N/A

In doing so we get to surface origin packages more prominently.

Fixes #13494  (again)

Release Notes:

- Fixed origin packages not being surfaced in Rust completions

This PR updates the Gleam docs provider to include the package name as a
suffix for docs entries:

<img width="639" alt="Screenshot 2024-07-03 at 5 48 28 PM"
src="https://github.com/zed-industries/zed/assets/1486634/0d98ffba-fbab-4511-ae16-e1e742d56f93">

This will help disambiguate modules with the same names from different
packages, as well as help out with providing better completions when the
package name and top-level module name do not match.

Release Notes:

- N/A

This PR renames the `DiagnosticsCommand` to `DiagnosticsSlashCommand` to
match the rest of our slash commands.

Release Notes:

- N/A

This PR adds a new `/docs` slash command to the Assistant. This slash
command replaces `/rustdoc`.

The `/docs` slash command works with different providers. There is
currently a built-in provider for rustdoc, but new providers can be
defined within extensions. The Gleam extension contains an example of
this.

When you first type `/docs` a completion menu will be shown with the
list of available providers:


https://github.com/zed-industries/zed/assets/1486634/32287000-5855-44d9-a2eb-569596f5abd9

After completing the provider you want to use then you can type the
package name and/or item path to search for the relevant docs:


https://github.com/zed-industries/zed/assets/1486634/6fc55a63-7fcd-42ea-80ce-08c670bf03fc

There are still some rough edges around completions that I would like to
get cleaned up in a future PR. Both of these seem to stem from the fact
that we're using an intermediate completion in the slash command:

1. Accepting a provider completion will show an error until you press
<kbd>Space</kbd> to continue typing.
- We need a way of not submitting a slash command when a completion is
accepted.
2. We currently need to show the provider name in the documentation item
completion list.
- Without it, the provider name gets wiped out when accepting a
completion, causing the slash command to become invalid.

Release Notes:

- N/A

This PR adds support for full client side decorations on X11 and Wayland

TODO:
- [x] Adjust GPUI APIs to expose CSD related information
- [x] Implement remaining CSD features (Resizing, window border, window
shadow)
- [x] Integrate with existing background appearance and window
transparency
- [x] Figure out how to check if the window is tiled on X11
- [x] Implement in Zed
- [x] Repeatedly maximizing and unmaximizing can panic
- [x] Resizing is strangely slow
- [x] X11 resizing and movement doesn't work for this:
https://discord.com/channels/869392257814519848/1204679850208657418/1256816908519604305
- [x] The top corner can clip with current styling
- [x] Pressing titlebar buttons doesn't work
- [x] Not showing maximize / unmaximize buttons
- [x] Noisy transparency logs / surface transparency problem
https://github.com/zed-industries/zed/pull/13611#issuecomment-2201685030
- [x] Strange offsets when dragging the project panel
https://github.com/zed-industries/zed/pull/13611#pullrequestreview-2154606261
- [x] Shadow inset with `_GTK_FRAME_EXTENTS` doesn't respect tiling on
X11 (observe by snapping an X11 window in any direction)

Release Notes:

- N/A

---------

Co-authored-by: conrad <conrad@zed.dev>
Co-authored-by: Owen Law <81528246+someone13574@users.noreply.github.com>
Co-authored-by: apricotbucket28 <71973804+apricotbucket28@users.noreply.github.com>
Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>

This PR improves the indexing of HexDocs content for Gleam packages.

We now index each of the modules in the package instead of just the
root.

Release Notes:

- N/A

Release Notes:

- First beta version of Linux

Release Notes:
- Added documentation on how to set up Claude as the assistant.

---------

Co-authored-by: Peter Tripp <petertripp@gmail.com>
Co-authored-by: Gilles Peiffer <gilles.peiffer.yt@gmail.com>
Co-authored-by: Peter Tripp <peter@zed.dev>

This is already done when selecting a subtest; by wrapping the test name
with `^{}$` the runnable will avoid selecting additional tests with the
same prefix.

Without this fix, selecting the runnable for `TestExample` will also run
`TestExample2`.

Release Notes:

- Fixed Golang tasks spawning tests starting with the current function name and not using the exact match.

Release Notes:

- vim: Add vim bindings for outline panel #13763

This PR updates the `extension` crate's tests to use a dedicated test
extension for its tests instead of the real Gleam extension.

As the Gleam extension continues to evolve, it makes it less suitable to
use as a test fixture:

1. For a while now, the test has failed locally due to me having `gleam`
on my $PATH, which causes the extension's `get_language_server_command`
to go down a separate codepath.
2. With the addition of the `indexed_docs_providers` the test was
hanging indefinitely.

While these problems are likely solvable, it seems reasonable to have a
dedicated extension to use as a test fixture. That way we can do
whatever we need to exercise our test criteria.

The `test-extension` is a fork of the Gleam extension with some
additional functionality removed.

Release Notes:

- N/A

Here is an image of my now getting assistance responses!

![2024-07-03_08-45-37_swappy](https://github.com/zed-industries/zed/assets/20910163/904adc51-cb40-4622-878e-f679e0212426)

I ended up adding a function to handle the use case of not serializing
the tool_calls response if it is either null or empty to keep the
functionality of the existing implementation (not deserializing if vec
is empty). I'm sorta a noob, so happy to make changes if this isn't done
correctly, although it does work and it does pass tests!

Thanks a bunch to [amtoaer](https://github.com/amtoaer) for pointing me
in the direction on how to fix it.

Release Notes:

- Fixed some responses being dropped from OpenAI-compatible providers
([#13741](https://github.com/zed-industries/zed/issues/13741)).

This changes the implementation of the X11 client to use `mio`, as a
polling mechanism, and a custom run loop instead of `calloop` and its
callback-based approach.

We're doing this for one big reason: more control over how we handle
events.

With `calloop` we don't have any control over which events are processed
when and how long they're processes for. For example: we could be
blasted with 150 input events from X11 and miss a frame while processing
them, but instead of then drawing a new frame, calloop could decide to
work off the runnables that were generated from application-level code,
which would then again cause us to be behind.

We kinda worked around some of that in
https://github.com/zed-industries/zed/pull/12839 but the problem still
persists.

So what we're doing here is to use `mio` as a polling-mechanism. `mio`
notifies us if there are X11 on the XCB connection socket to be
processed. We also use its timeout mechanism to make sure that we don't
wait for events when we should render frames.

On top of `mio` we now have a custom run loop that allows us to decide
how much time to spend on what — input events, rendering windows, XDG
events, runnables — and in what order we work things off.

This custom run loop is consciously "dumb": we render all windows at the
highest frame rate right now, because we want to keep things predictable
for now while we test this approach more. We can then always switch to
more granular timings. But considering that our loop runs and checks for
windows to be redrawn whenever there's an event, this is more an
optimization than a requirement.

One reason for why we're doing this for X11 but not for Wayland is due
to how peculiar X11's event handling is: it's asynchronous and by
default X11 generates synthetic events when a key is held down. That can
lead to us being flooded with input events if someone keeps a key
pressed.

So another optimization that's in here is inspired by [GLFW's X11 input
handling](https://github.com/glfw/glfw/blob/b35641f4a3c62aa86a0b3c983d163bc0fe36026d/src/x11_window.c#L1321-L1349):
based on a heuristic we detect whether a `KeyRelease` event was
auto-generated and if so, we drop it. That essentially halves the amount
of events we have to process when someone keeps a key pressed.

Release Notes:

- N/A

---------

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

Fixes: #1504

Release Notes:

- vim: Support for macros (`q` and `@`) to record and replay (#1506,
#4448)

This PR renames `ExtensionDocsIndexer` to `ExtensionIndexedDocsProvider`
to better align with the name of the trait it implements.

Release Notes:

- N/A

On Intel, Metal will pick a discrete GPU by default when available,
resulting in higher power consumption and heat output. Prefer
non‐removable low‐power devices to correct this.

On Apple Silicon, there is only ever one GPU, so there is no functional
change.

I didn’t do intensive benchmarking of this or anything, but Zed still
seems responsive and it stops my MacBook Pro acting as a combination
space heater–jet engine.

Thanks to @denlukia for showing that this is easy to fix; I’ve marked
you as a co‐author, I hope that’s okay.

Closes: #5124



Release Notes:

- Improved power consumption on Intel Macs by preferring integrated GPUs
over the discrete GPUs.
([#5124](https://github.com/zed-industries/zed/issues/5124)).

Co-authored-by: Denis Lukianenko <denlyk1@gmail.com>

- Add the phrase "compact folders" to `auto_fold_dirs` to enhance
searchability.
- Fix `buffer_line_height` copy pasta

Release Notes:

- N/A

The problem with #13459 was the bump to a newer JSON LS version, which
requires explicitly opting into validation.

Release Notes:

- Fixed JSON validation being disabled by default (Preview only)

This PR provides extensions with the ability to define providers for
indexing docs.

Release Notes:

- N/A

Log extension queries to axiom. Longer term it'd be nice to get this in
clickhouse, but that requires a bit more work.

Release Notes:

- N/A