Github Copilot currently supports following models for agent mode with
tool calls. Currently we are only supporting anthropic models and not
openai and gemini. This PR add support for the openai models. I have
tested it and it works for all of them. For gemini models it seems there
is a issues from copilot side so not adding that in this PR as enabling
gemini model breaks it in the ask mode as well.

<img width="392" alt="image"
src="https://github.com/user-attachments/assets/fb7a4148-e48c-45c5-9ff9-c02f71217dfb"
/>


- [x] GPT-4.1

- [x] GPT-4.0

- [x] o4-mini

Release Notes:

- agent: Add tool calling support for gpt-4.1, gpt-4o, o4-mini when
using Copilot Chat as a provider

Signed-off-by: Umesh Yadav <umesh4257@gmail.com>

Release Notes:

- N/A

I added some padding to the editor, and removed the border around each
hunk as it would overlap in weird ways with the card container.

## Before

<img width="1148" alt="image"
src="https://github.com/user-attachments/assets/2018feaa-c847-4609-bc82-522660714b9a"
/>

## After

One Light:

<img width="1148" alt="image"
src="https://github.com/user-attachments/assets/4da1a4b6-0af2-4479-afcc-02da50178fd6"
/>

One Dark:

<img width="1148" alt="image"
src="https://github.com/user-attachments/assets/0168631d-7b76-4582-8174-c6e9c1297dc8"
/>


Release Notes:

- Improved displaying of diffs when the agent edits files.

Release Notes:

- Fixed SSH projects not restoring their window position on reopen

Closes #29858 

This PR fixes the alignment-issue for the project saerch for cases where
the horizontally available space is large.

The issue arose because the two smaller editors within one line were
allowed to grow as much as the other editors on separate lines, up to
1200 pixels. However, these two editors should together only take up
1200 pixels at maximum, including the gap between them. To fix this, the
editors now live within one container element that grows at the same
rate as the other editors whilst allowing both editors to flex grow as
needed in the available space.

Current main:


https://github.com/user-attachments/assets/622016dc-70e5-455f-a7ba-5b69405d7e1e

This PR: 


https://github.com/user-attachments/assets/5244abf7-f0c0-4781-acb7-b774638d8a17

Release Notes:

- Improved project search input field alignment.

This PR improves the `GET /billing/usage` endpoint.

We now return the usage with the default plan limits when there is no
usage record.

Release Notes:

- N/A

This PR updates the Agent callout URLs to go to the account page.

Release Notes:

- N/A

This PR updates the `Callout` constructors to be more flexible by
accepting `impl Into<SharedString>`s.

Release Notes:

- N/A

This PR removes the `UsageBanner` component, as it was no longer used.

Release Notes:

- N/A

This PR removes some unneeded tracking of the model request usage in the
`ActiveThread` and `ThreadEvent::UsageUpdated` events.

Release Notes:

- N/A

Release Notes:

- N/A

---------

Co-authored-by: Marshall Bowers <git@maxdeviant.com>

Kinda feel like the way that makes the most sense to sort profiles in
the dropdown is by relevance/impact. "Write" is the default profile and
contains all built-in tools turned on by default, thus it should be the
first. "Ask" contains read-only tools, one step down from Write. And
"Manual" is totally empty, the least "powerful" profile, thus the last.

Release Notes:

- N/A

I am currently setting the font size corrrectly by using a custom
EditorStyle and building an element. However I need to use the same
properties as a normal editor for everything but font size.

Release Notes:

- N/A

- Removed unused `MessageBubbleDashed` icon
- Polished `Crosshair` icon SVG
- Added dropdown toggle keybinding to the profile selector tooltip
- Repositioned buttons at the message editor footer
- Updated buttons to use `Button` instead of `ButtonLike`

Release Notes:

- N/A

This PR makes it so we don't try to sync billing usage to Stripe for
staff users.

Release Notes:

- N/A

* `CountTokensRequest` now takes a full `GenerateContentRequest` instead
of just content.

* Fixes use of `models/` prefix in `model` field of
`GenerateContentRequest`, since that's required for use in
`CountTokensRequest`. This didn't cause issues before because it was
always cleared and used in the path.

Release Notes:

- N/A

This appears to be the only place `std::sync::Mutex` is used, Zed always
prefers `parking_lot`.

Release Notes:

- N/A

This error is used for more requests than completion requests

Release Notes:

- N/A

This PR sets the billing-related fields in the LLM token claims for Zed
staff.

Staff members are automatically in the Zed Pro plan with a subscription
periods that spans the entirety of each month.

Release Notes:

- N/A

I don't think this makes much of a difference in current use, but this
more closely matches other providers and cleans up the "Response"
section of eval markdown output

Release Notes:

- N/A

Release Notes:

- N/A

Release Notes:

- N/A

---------

Co-authored-by: Nathan Sobo <nathan@zed.dev>
Co-authored-by: Marshall Bowers <git@maxdeviant.com>

This is purely a cosmetic change, renamed `@rules` to `@rule` which
unifies the @mention experience (for files, threads etc. we also use
`@file`, `@thread` not `@files`, `@thread`). Would also make sense to
rename the rules picker to rule picker, but i do not wanna introduce
conflicts just for the purpose of re-naming.

Release Notes:

- N/A

This PR adds a `use_llm_request_queue` field to the LLM token claims,
based on the `llm-request-queue` feature flag.

Release Notes:

- N/A

This PR adds a migration to drop the `subscription_usages` and
`subscription_usage_meters` tables from the database.

We're now using `subscription_usages_v2` and
`subscription_usage_meters_v2` everywhere.

Release Notes:

- N/A

I also introduced a new eval to prove the encouragement actually makes a
difference.

Release Notes:

- Improved agent behavior when streaming edits, encouraging it to
editing files as opposed to creating them from scratch

This PR fixes the type of the `subscription_usage_id` column on the
`SubscriptionUsageMeter` model.

Release Notes:

- N/A

Nathan here: I also tacked on a bunch of UI refinement.

Release Notes:

- Introduced the ability to follow the agent around as it reads and
edits files.

---------

Co-authored-by: Nathan Sobo <nathan@zed.dev>
Co-authored-by: Max Brunsfeld <maxbrunsfeld@gmail.com>

Release Notes:

- agent: Add the `single_file_review` setting to the UI

Closes #29836

The agent diff toolbar item was causing the editor toolbar to show even
when all the other elements were disabled via settings.

This PR fixes this by setting the location to
`ToolbarItemLocation::Hidden` in the states where it shouldn't show.

It also adds a new a `toolbar.agent_review` setting to hide the agent
review buttons altogether. However, if the other toolbar elements are
hidden and the file isn't under review, the editor toolbar will still be
hidden. So you only need to set this to `false` if you don't want them
to show up even under agent review.

Release Notes:

- N/A

This PR adds a singular constant that controls the Agent-related feature
flags.

This way we can tweak this one value when we're ready to build the final
build for the launch.

Release Notes:

- N/A

This PR updates Collab to use the new subscription usage tables added in
#29847.

Release Notes:

- N/A

This PR adds two new tables:

- `subscription_usages_v2`
- `subscription_usage_meters_v2`

These are the same as the old ones, except using UUIDs as primary keys.

Release Notes:

- N/A

This PR fixes an issue where we would erroneously try to transfer
existing subscription usage when a Zed Pro trial was canceled.

Release Notes:

- N/A

This PR implements the `ParentElement` trait for the `Banner` component
so that it can use the real children APIs instead of a bespoke one.

Release Notes:

- N/A

This PR adds a notice when reaching consecutive tool use limits when
using normal mode.

Here's an example with the limit artificially lowered to 2 consecutive
tool uses:


https://github.com/user-attachments/assets/32da8d38-67de-4d6b-8f24-754d2518e5d4

Release Notes:

- agent: Added a notice when reaching consecutive tool use limits when
using a model in normal mode.

Still a work in progress.

Release Notes:

- N/A

---------

Co-authored-by: Bennet Bo Fenner <bennetbo@gmx.de>
Co-authored-by: Nathan Sobo <nathan@zed.dev>
Co-authored-by: Cole Miller <m@cole-miller.net>
Co-authored-by: Nathan Sobo <1789+nathansobo@users.noreply.github.com>
Co-authored-by: Cole Miller <53574922+cole-miller@users.noreply.github.com>

- [x] Separate MCP servers from tools in the profile customization modal
view
- [x] Group MCP tools in the MCP picker and add a heading
- [x] Separate bult-in profiles from custom ones in the dropdown
selector
- [x] Separate bult-in profiles from custom ones in the modal
- [ ] Enable looping through items via keybinding without opening the
dropdown (will be done on a follow-up PR)
- [ ] Stretch: Focus on the currently active item upon opening the
dropdown (will be done on a follow-up PR)

Release Notes:

- N/A

---------

Co-authored-by: Bennet Bo Fenner <53836821+bennetbo@users.noreply.github.com>
Co-authored-by: Bennet Bo Fenner <bennetbo@gmx.de>
Co-authored-by: Bennet Bo Fenner <bennet@zed.dev>

The cursor wasn't always placed at the first hunk for review editors.

Release Notes:

- N/A

Enables reviewing agent edits from single-file editors in addition to
the multibuffer experience we already had.


https://github.com/user-attachments/assets/a2c287f0-51d6-43a1-8537-821498b91983


This feature can be turned off by setting `assistant.single_file_review:
false`.

Release Notes:

- agent: Review edits in single-file editors

This sets us up to display queue position information to the user, once
our language model backend is updated to support request queuing.

The JSON returned by the LLM backend will need to look like this:

```json
{"queue": {"status": "queued", "position": 1}}
{"queue": {"status": "started"}}
{"event": {"THE_UPSTREAM_MODEL_PROVIDER_EVENT": "..."}} 
```

Release Notes:

- N/A

---------

Co-authored-by: Marshall Bowers <git@maxdeviant.com>

Also `now` in `write` profile

Release Notes:

- Tools for manipulating directories no longer require confirmation, and
are enabled in the Write profile
- Enabled `now` and `list_directory` tools by default in Write profile

---------

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

Closes #ISSUE

Co-authored-by: Bennet <bennet@zed.dev>

Release Notes:

- Added support for context `@mentions` in the inline prompt editor and
when editing past messages in the agent panel.

---------

Co-authored-by: Bennet Bo Fenner <bennet@zed.dev>
Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>

Previously, the assistant panel width was not persisted across sessions.
This meant that upon restarting the Zed editor, the panel would revert
to its default size, disrupting the user's preferred layout.

This pull request introduces persistence for the assistant panel width.
The width is now saved to the key-value store when the editor is closed
and restored on startup, ensuring a consistent UI experience across
different sessions.

Release Notes:

- agent: Add assistant panel width persistence

---------

Signed-off-by: Umesh Yadav <umesh4257@gmail.com>

I also moved the breakpoint store to session from local mode, because
both remote/local modes will need the ability to remove active debug
lines.

Release Notes:

- N/A

Release Notes:

- Removed some obsolete tools: batch_tool, code_actions, code_symbols,
contents, symbol_info, rename

Co-authored-by: Cole Miller <m@cole-miller.net>

This PR releases v0.5.0 of the Zed extension API.

Support for this version of the extension API will land in Zed v0.186.x.

Release Notes:

- N/A

Also have its description say it should only be used on request

Release Notes:

- N/A