This pull request simplifies the `Pane` struct by replacing methods like
`Pane::add_item` that would previously take a `&mut Workspace` with
methods that take a `&mut self`. When access to the workspace is needed,
we now either emit an event from the `Pane` or directly move the method
to the `Workspace` struct.

I was having fun, but it was too much. It makes the assistant too
annoying to be useful.

Release Notes:

Use `N/A` in this section if this item should be skipped in the release
notes.

Add release note lines here:

* Dialed back the system prompt on the assistant.

I was having fun, but it was too much. It makes the assistant too annoying to be useful.

Co-Authored-By: Nathan Sobo <nathan@zed.dev>

Co-Authored-By: Nathan Sobo <nathan@zed.dev>

* ESC (project_search::ToggleFocus) toggles focus from include/exclude
fields to the editor

* Cmd+Shift+F (workspace::NewSearch) can be triggered from the editor,
and moves focus to the query editor

Release Notes:

* Improved project search panel shortcut handling, allowing more actions
to trigger from panel elements

* ESC (project_search::ToggleFocus) toggles focus from
  include/exclude fields to the editor

* Cmd+Shift+F (workspace::NewSearch) can be triggered from the editor,
and moves focus to the query editor

Current `lsp-types:0.91.1` crate lacks inlay hints' definitions. Crate's
changelog is not very descriptive, but it appears that `0.92.1` could be
used:
https://github.com/gluon-lang/lsp-types/blob/master/CHANGELOG.md#v0921-2022-03-21
The latest is crate version is `0.94.0` (2023-02-08), the PR updates Zed
to the latest version.


Notable changes:
* workspace symbols may arrive unresolved if the corresponding client
capability is enabled:
https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#partialResults
Zed has this capability disabled, forcing all symbols to arrive
synchronously (?).

Resolve capabilities are important for inlay hints too, but I've not
found any code in Zed for that outside tests, so I'd love to learn more
and implement the resolution for workspace symbols separately.

* since LSP `3.17` (current), watch file changes can use relative glob
patterns:
https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#workspace_didChangeWatchedFiles

That seemed just a straightforward extra `match` to use the same Ruse
`Glob` to handle the relative path one.

Release Notes:

N/A

This PR makes the worktree's change events more useful in a few ways:

* The changes are now described by a cheaply clone-able collection, so
that they can be used in background tasks. Right now, I'm using a simple
Arc slice.
* The `UpdatedEntries` event now captures not only changes due to FS
changes, but also newly-loaded paths that are discovered during the
initial scan.
* The `UpdatedGitRepositories` event now includes repositories whose
work-dir changed but git dir didn't change. A boolean flag is included,
to indicate whether the git content changed.
* The `UpdatedEntries` and `UpdatedGitRepositories` events are now
*used* to compute the worktree's `UpdateWorktree` messages, used to sync
changes to guests. This unifies two closely-related code paths, and
makes the host more efficient when collaborating, because the
`UpdateWorktree` message computation used to require walking the entire
`entries` tree on every FS change.

Fixes
https://linear.app/zed-industries/issue/Z-1793/file-finder-external-recent-paths-are-not-rendered-properly

Long paths get trimmed, but same do many of our other elements, such as
type definitions, so I think it's ok for now:

![image](https://github.com/zed-industries/zed/assets/2690773/b8b6588d-6d6b-42db-9085-c741a40b7adb)

Also, we seem to do a lot of odd diagnostics handling on every external
stdlib file opened:

![image](https://github.com/zed-industries/zed/assets/2690773/cd82c54e-7849-46fe-a01c-79bfc5402b7b)
Other external files also emit similar messages, but not that much.
@\mikayla-maki mentioned, that this was happening before, so can be
fixed separately.
The PR adds path printing to these logs.

Release Notes:

* Fixed external files not being displayed properly in the recently
opened list in the file finder panel

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

We don't need to look-up change types by an arbitrary key, but we
do need to iterate it. It would also be useful to be able to
cheaply clone the changes, to use them in a background task.

Each message is represented as a multibuffer excerpt to allow for
fluid editing of the conversation transcript.

Co-Authored-By: Antonio Scandurra <antonio@zed.dev>

Closes
https://linear.app/zed-industries/issue/Z-1760/creating-a-new-file-with-the-same-name-as-an-existing-file-overwrites

Now every rename/creation editor won't do anything if a duplicate name
is submitted.

Release Notes:

* Fixed a bug when created in project panel items with duplicate names
were overwriting the old files

This took so much longer than I wanted, so glad to finally be rid of
this

Release Notes:
* Improved performance when editing many git-tracked files in a
multi-buffer at the same time

This avoids an issue where in a many-buffer multi-buffer, each modified
buffer could complete its recalc independently, causing a cascade of
repeated notifies

Now all recalcs started at the same time must complete before
 A: Starting another recalc pass
 B: The master notify occurring

Each buffer can still show its new diff if something else triggers it
to notify earlier, this is desirable and does not have the same negative
effects as the notify cascade as those re-layouts would need to happen
anyway

Co-Authored-By: Max Brunsfeld <max@zed.dev>

Supports
https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_onTypeFormatting

rust-analyzer uses this feature to add matching brackets semantically,
e.g.
before:
![Screenshot 2023-05-23 at 17 46
42](https://github.com/zed-industries/zed/assets/2690773/020e8448-23e6-4a38-8dbb-c9edf18062f7)

after:
![Screenshot 2023-05-23 at 17 46
49](https://github.com/zed-industries/zed/assets/2690773/4d140af3-aca6-451d-ac61-e2a9bb31caea)

`use_on_type_format` settings entry was added, enabled by default, to
disable the new feature.

Release Notes:

* Support `OnTypeFormatting` LSP protocol feature, allowing
rust-analyzer to add matching brackets

Fixes
https://linear.app/zed-industries/issue/Z-1834/bottom-dock-can-be-dragged-down-far-enough-such-that-the-tab-bar-is

Release Notes:

- Improved the resize experience for the bottom dock, preventing it from
becoming too large or too small. (preview-only)