Fixes (hopefully)
[#2136](https://github.com/zed-industries/community/issues/2136).

Release Notes:

- N/A

In addition to fixing a panic, this makes it slightly more convenient to
re-open disconnected channel notes views. I didn't make it automatic,
but it will at least replace the previous, disconnected view.

Release Notes:

- Fixed a crash that sometimes occurred when following someone with a
disconnected channel notes view open.

Release Notes:

- Fixed diagnostics indicator not showing proper diagnostics count

Release Notes:

- vim: `{` and `}` will no longer wrap around end of file
([#2116](https://github.com/zed-industries/community/issues/2116)).

Release Notes:

- vim: Add `Y` to copy line-wise (this copies vim's behaviour, which
differs from nvim's)

A logic error in https://github.com/zed-industries/zed/pull/2993 caused
follow responses to sometimes contain extra views for other unshared
projects 😱 . These views would generally fail to deserialize on the
other end. This would create a broken intermediate state, where the
following relationship was registered on the server (and on the leader's
client), but the follower didn't have the state necessary for following
into certain views.

Release Notes:

- Fixed a bug where following would sometimes fail if the leader had
another unshared project open.

This fixes a bug that was introduced by
https://github.com/zed-industries/zed/pull/3093, which assumed that
rooms for channels where ephemeral, by making rooms for channels
ephemeral.

Release Notes:

- N/A

Remove redundant live kit initialization code
Fix bug in recent channel links changes where channel rooms would have the incorrect release set

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

This pull request essentially reverts #3067: we noticed that only using
the function signatures produces far worse results in codegen, and so
that feels like a regression compared to before. We should re-enable
this once we have a smarter approach to fetching context during codegen,
possibly when #3097 lands.

As a drive-by, we also fixed a longstanding bug that caused codegen to
include the final line of a selection even if the selection ended at the
start of the line.

Ideally, I'd like to hot fix this to preview so that it goes to stable
during the weekly release.

/cc: @KCaverly @nathansobo 

Release Notes:

- N/A

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

Release notes:

- `mute_on_join` setting now defaults to false.
- Right click on a channel to "Copy Channel Link", these links work to
open Zed and auto-join the channel

Blocked on: https://github.com/zed-industries/zed.dev/pull/388

Hopefully this works the first time 😅

Release Notes:

- N/A

Participants' locations might momentarily reference projects that have already been unshared.

This normally doesn't happen, but it can happen if a participant
loses connection ungracefully, restarts their app, and then
explicitly joins again.

New rustc messages look like

```
thread 'tests::test_history_items_vs_very_good_external_match' panicked at crates/file_finder/src/file_finder.rs:1902:13:
assertion `left == right` failed: Only one history item contains collab_ui, it should be present and others should be filtered out
  left: 0
 right: 1
```

now and we fail to parse that `13:` bit properly, fix that.

One caveat is that we highlight the entire word including the trailing
`:`:
<img width="914" alt="image"
src="https://github.com/zed-industries/zed/assets/2690773/d653a8ff-3e6e-4e3d-b6ea-dad0c8db0f06">

this is unfortunate, but better than nothing (as now).
This is due to the fact, that we detect words with regex inside the
`terminal.rs` and send events to other place that's able to check paths
for existence (and whether that's a path at all), currently there's no
way to detect a path and sanitize it in `terminal.rs`

Release Notes:

- N/A

New rustc messages look like

```
thread 'tests::test_history_items_vs_very_good_external_match' panicked at crates/file_finder/src/file_finder.rs:1902:13:
assertion `left == right` failed: Only one history item contains collab_ui, it should be present and others should be filtered out
  left: 0
 right: 1
```

now and we fail to parse that `13:` bit properly, fix that.

I've also simplified the representation of a workspace's leaders, so
that it encodes in the type that there can only be one leader per pane.

Release Notes:

- Fixed a bug where you could accidentally follow multiple collaborators
in one pane at the same time.

Follow-up of https://github.com/zed-industries/zed/pull/3059 

Before: 

![image](https://github.com/zed-industries/zed/assets/2690773/4eb2d2d1-1aa3-40b8-b782-bf2bc5f17b43)

After:

![image](https://github.com/zed-industries/zed/assets/2690773/5587d46b-9198-45fe-9372-114a95d4b7d6)

Release Notes:

- N/A

This PR introduces a new script for running Zed against a local collab
server, called `script/zed-local`. This script replaces the two existing
scripts that we had for this purpose: `script/zed-with-local-servers`
and `script/start-local-collaboration`.

By default, the script starts one single instance of Zed, but you can
pass a numeric flag to start 1, 2, 3 or 4 instances. So to start up two
instances side by side, (like `start-local-collaboration` script), you'd
do this:

```
script/zed-local -2
```

But you can also start *three* (or even four) instances, each taking up
a quarter of the screen, like this:

```
script/zed-local -3
```

Like before, you can pass other arguments to the script, and they will
be passed through to the first zed instance.

Also, unlike the `start-local-collaboration` script, this script now
requires a call to GitHub to determine your GitHub username. It just
logs you in as Nathan by default, unless you set `ZED_IMPERSONATE`
explicitly.

(also consider your own projects in "most_active_projects")

I just panicked and wanted to see the cause, but forgot that panic files
get deleted when Zed uploads them.

Release Notes:

- Panics are now written to `~/Library/Logs/Zed/Zed.log`

This was motivated by me trying to decide which crate I should put a
`NotificationStore` in.

Run `script/crate-dep-graph` to generate an SVG showing the dependency
graph of our `crates` folder, and open it in a web browser.

After running this command, I noticed a couple of dependencies that
didn't make sense and were easy to remove.

Current dependency graph:

![Screen Shot 2023-10-06 at 1 15 42
PM](https://github.com/zed-industries/zed/assets/326587/b5008235-498a-4562-a826-cc923898c052)