Cherry-picked Don't iterate over all system processes (#11281)

Release Notes:

- Fixed a UI beachball when gathering process information

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

Cherry-picked Only keep one blame up-to-date (#11274)

I was experiencing hang, and we blamed it on spawning a few hundred git
processes
simultaneously.

cc @MrNugget

Release Notes:

- Fixed slowness with hundreds of buffers open doing git blame.

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

Cherry-picked Use HIGH priority to wake blocked timers (#11269)

One contributor to some beach-balls was that the main thread was calling
block_with_timeout, but the timeout never fired.

Release Notes:

- Reduced main thread hangs under very high system load

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

Release Notes:

- N/A

Follup up from
https://github.com/zed-industries/zed/pull/11229#pullrequestreview-2033556336

Release Notes:

- N/A

This PR adds a suggestion for the new [SCSS
extension](https://github.com/bajrangCoder/zed-scss) when `.scss` files
are opened.

Release Notes:

- Added a suggestion for the SCSS extension when `.scss` files are
opened.

Contributes: #11168


https://developer.apple.com/documentation/corefoundation/1542428-cfrunloopgetcurrent
implies that we should be `CFRetain`ing the run loop.

Lets do that, and see if it reduces the number of crashes we see.

Release Notes:

- (maybe) Fix a rare crash in watching settings files.

Release Notes:

- open directory using context menu (Right click -> open with -> zed).

For #11084 In the case of an indentation in front of the current line,
it may also be necessary to deal with the start point of the selected
range


Release Notes:


- N/A

---------

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

This PR adds `language_servers` settings for Elixir and HEEX to ensure
they both only use Elixir LS by default.

Eventually we'd like to have these provided by the Elixir extension, but
there are some outstanding questions on the design.

For now we can just use the built-in default settings to ensure a good
out-of-the-box experience for Elixir users.

Release Notes:

- N/A

This PR refines the UX of editing a previous message, including the
following:

- Focus the prev message body editor on double-click
- Restore previous body text on cancel
- Cancel pending completion upon submission of previous message
- Drive-by: Remove min height on composer editor

Release Notes:

- N/A

---------

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

Release Notes:

- N/A

Release Notes:

- Added preview builds for linux

Release Notes:

- Allow creating new untitled buffers in remote projects

TODO:
- Add a Test
- Fix version number check

Release Notes:

- N/A

---------

Co-authored-by: Mikayla <mikayla@zed.dev>

This PR fixes the height of collapsed messages, addressing the
associated TODO comment.

Release Notes:

- N/A

This PR sets up the `assistant2` crate with the storybook so that UI
elements can be iterated on in isolation.

To start, we have some stories for the `ChatMessage` component:

```sh
cargo run -p storybook -- components/assistant_chat_message
```

<img width="1233" alt="Screenshot 2024-04-30 at 5 20 03 PM"
src="https://github.com/zed-industries/zed/assets/1486634/510967ea-0e9b-4fa9-94fb-421ee74bcc45">

Release Notes:

- N/A

This PR adds some additional spacing to the composer so it aligns with
the chat messages.

Release Notes:

- N/A

Release Notes:

- N/A

---------

Co-authored-by: Mikayla <mikayla@zed.dev>

Release Notes:

- Fixed a panic when a remote participant dropped a local file on your
project

This PR updates the assistant to render historical user messages the
same as ones from the assistant.

Double-clicking on a message will open a composer inline for editing.
Pressing `Esc` will cancel the edit.

We don't yet restore the previous state of the message upon canceling.

<img width="401" alt="Screenshot 2024-04-30 at 4 04 01 PM"
src="https://github.com/zed-industries/zed/assets/1486634/5f253fa8-6578-4054-be30-c495e326d700">

<img width="401" alt="Screenshot 2024-04-30 at 4 04 28 PM"
src="https://github.com/zed-industries/zed/assets/1486634/edf25cea-d97e-44d2-8772-3690eac017a4">


Release Notes:

- N/A

This PR removes an unused assistant prompt.

Release Notes:

- N/A

Co-authored-by: Nathan <nathan@zed.dev>

* [x] Fixed an issue where embeddings would be assigned incorrectly to
files if a subset of embedding batches failed
* [x] Added a command to debug which paths are present in the semantic
index
* [x] Determine why so many paths are often missing from the semantic
index
* we erroring out if an embedding batch contained multiple texts that
were the same, which can happen if a worktree contains multiple copies
of the same text (e.g. a license).

Release Notes:

- N/A

---------

Co-authored-by: Marshall <marshall@zed.dev>
Co-authored-by: Nathan <nathan@zed.dev>
Co-authored-by: Kyle <kylek@zed.dev>
Co-authored-by: Kyle Kelley <rgbkrk@gmail.com>

This PR adds a new tool to the `assistant2` crate that allows the
assistant to create a new buffer with some content.

Release Notes:

- N/A

---------

Co-authored-by: Nathan <nathan@zed.dev>

Before:

![image](https://github.com/zed-industries/zed/assets/24362066/98d633a7-c982-4522-b4dc-b944b70b8081)

After: 

![image](https://github.com/zed-industries/zed/assets/24362066/79931e12-0e6c-4ece-b734-5af7d02f7e50)

Release Notes:

- N/A

This PR cleans up the doc comments on the `LanguageModelTool` trait to
follow Rust documentation conventions.

Release Notes:

- N/A

This PR does a slight restructuring of how tools are defined in the
`assistant2` crate to make it more amenable to adding more tools in the
near future.

Release Notes:

- N/A

Release Notes:

- N/A

I think the previous code was missing a `return` in there because it
always overwrote the `completion.documentation` field, even if the
`text.is_empty()` is true.

Release Notes:

- N/A

Release Notes:

- Added support for avatars in git blame for repositories hosted on
codeberg

<img width="1144" alt="Screenshot 2024-04-25 at 16 45 22"
src="https://github.com/zed-industries/zed/assets/43210583/d44770d8-44ea-4c6b-a1c0-ac2d1d49408f">

Questions:
- Should we move git stuff like `Commit`, `Author`, etc outside of
hosting-specific files (I don't think so, as other hostings can have
different stuff)
- Should we also add support for self hosted forgejo instances or should
it be a different PR?

Release Notes:


- N/A

Co-Authored-By: Mikayla <mikayla@zed.dev>

Release Notes:


- N/A

---------

Co-authored-by: Mikayla <mikayla@zed.dev>

The Motion::CurrentLine operation will contain the newline of the
current line, so we need to deal with this edge case



Release Notes:

- N/A

Release Notes:

- Fixed a panic in SVG rendering

Release Notes:

- Added support for line ranges in vim replace commands #9428


- not supporting anything other than bare line numbers right now
- ~need to figure out how to show range in question in search bar~
@ConradIrwin implemented showing a highlight of the selected range for a
short direction instead
- ~tests lol~

Release Notes:

- Added diagnostics for main-thread hangs on macOS. These are only
enabled if you've opted into diagnostics.

---------

Co-authored-by: Mikayla <mikayla@zed.dev>

This PR adds the ability to collapse/uncollapse chat messages.

I think the spacing might be a little off with the collapsed
calculations, so we'll need to look into that.


https://github.com/zed-industries/zed/assets/1486634/4009c831-b44e-4b30-85ed-0266cb5b8a26

Release Notes:

- N/A

This PR adds dependencies for Gentoo Linux.

Release Notes:

- N/A

Fixes https://github.com/zed-industries/zed/issues/11121

Release Notes:

- N/A

Fixes wrong cursor icons and sizes on KDE 6 (and possibly other
compositors)

Gnome still doesn't support this protocol, so to fix cursor settings
there we'll need to read `gsettings`.

Before:

![image](https://github.com/zed-industries/zed/assets/71973804/f0c3dc1b-2bed-43f7-b579-df6c9c0b547f)

After:

![image](https://github.com/zed-industries/zed/assets/71973804/6de639f9-653d-4896-80ca-b7c69641eded)


Release Notes:

- N/A

This PR updates the new assistant panel to use the `ChatMessage`
component to render its chat messages.

This also lays the foundation for collapsing the messages, though that
has yet to be wired up.

Adapted from the work on the `assistant-chat-ui` branch.

Release Notes:

- N/A

This PR adds headers to the chat messages in the new assistant panel.

Adapted from the work on the `assistant-chat-ui` branch.

Release Notes:

- N/A

Release Notes:

- N/A

---------

Co-authored-by: Marshall <marshall@zed.dev>
Co-authored-by: Nate <nate@zed.dev>
Co-authored-by: Kyle <kylek@zed.dev>
Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>

This PR balances the left and right spacing around the traffic lights on
macOS.

Release Notes:

- Minor UI changes to the titlebar

This PR restores the `Global` trait's status as a marker trait.

This was the original intent from #7095, when it was added, that had
been lost in #9777.

The purpose of the `Global` trait is to statically convey what types can
and can't be accessed as `Global` state, as well as provide a way of
restricting access to said globals.

For example, in the case of the `ThemeRegistry` we have a private
`GlobalThemeRegistry` that is marked as `Global`:
https://github.com/zed-industries/zed/blob/91b3c24ed35d58438ae33970f07d1ff01d3acfc7/crates/theme/src/registry.rs#L25-L34

We're then able to permit reading the `ThemeRegistry` from the
`GlobalThemeRegistry` via a custom getter, while still restricting which
callers are able to mutate the global:
https://github.com/zed-industries/zed/blob/91b3c24ed35d58438ae33970f07d1ff01d3acfc7/crates/theme/src/registry.rs#L46-L61

Release Notes:

- N/A