This PR removes all of the feature flag checks related to the Agent.

Tried to do this in the least invasive way possible; we can follow up
with a full removal.

Release Notes:

- N/A

Closes #29781

Tested this with llama3, gemma3 and qwen3.

This is a breaking change, which means after adding this code changes in
future version zed we will require atleast lmstudio >= 0.3.15. For
context why it's breaking changes check out the issue: #29781.

What this doesn't try to solve is:

* Tool calling, thinking text rendering. Will raise a seperate PR for
these as those are not required in this PR to make it work.


https://github.com/user-attachments/assets/945f9c73-6323-4a88-92e2-2219b760a249

Release Notes:

- lmstudio: Fixed Zed support for LMStudio >= v0.3.15 (breaking change -- older versions are no longer supported).

---------

Co-authored-by: Peter Tripp <peter@zed.dev>

This PR enables the Agent-related feature flags on the client.

Release Notes:

- N/A

This PR adds an onboarding banner for the Agent panel:

<img width="262" alt="Screenshot 2025-05-06 at 6 54 58 PM"
src="https://github.com/user-attachments/assets/52849e64-7d5d-488c-8456-4d7bd97f8ebd"
/>

Release Notes:

- N/A

This PR fixes an issue where the Git onboarding banner wasn't able to be
reset.

Release Notes:

- N/A

Adds time-bucket separators to the thread history list:


https://github.com/user-attachments/assets/c9ac3ec4-b632-4ea5-8234-382b48de2bd6

Note: I'm simulating that Today is next Thursday so that I can show the
"This Week" bucket.

Release Notes:

- agent: Add date separators to Thread History

Adds a new `agent.model_parameters` setting that allows the user to
specify a custom temperature for a provider AND/OR model:

```json5
    "model_parameters": [
      // To set parameters for all requests to OpenAI models:
      {
        "provider": "openai",
        "temperature": 0.5
      },
      // To set parameters for all requests in general:
      {
        "temperature": 0
      },
      // To set parameters for a specific provider and model:
      {
        "provider": "zed.dev",
        "model": "claude-3-7-sonnet-latest",
        "temperature": 1.0
      }
    ],
```

Release Notes:

- agent: Allow customizing temperature by provider/model

---------

Co-authored-by: Max Brunsfeld <maxbrunsfeld@gmail.com>
Co-authored-by: Marshall Bowers <git@maxdeviant.com>

Supersedes: https://github.com/zed-industries/zed/pull/29936

Thanks for your contribution @imumesh18, but we had a slightly different
take on it :)

Release Notes:

- N/A

Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>

This PR makes it so we only show the trial upsell in the thread view.

Fixes https://github.com/zed-industries/zed/issues/30037.

Release Notes:

- Agent Beta: Changed the trial upsell to only be visible in the thread
view.

Release Notes:

- N/A

---------

Co-authored-by: Michael Sloan <mgsloan@gmail.com>

This PR updates the default Linux keybindings to align with changes made
to the macOS bindings in #29943.

Release Notes:

- N/A

Release Notes:

- N/A

Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>

Release Notes:

- Fixed a panic that could sometimes occur when the agent applies edits.

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

This PR makes it so we don't render the trial upsell when not using the
Zed provider.

Release Notes:

- Agent Beta: Changed Zed Pro trial upsell to only be displayed when
using a model through the Zed provider.

Release Notes:

- Agent Beta: Fixed a bug that caused past failed tool calls to
incorrectly display as cancelled by the user.

This PR makes it so we don't render the usage callouts when not using
the Zed provider.

Release Notes:

- Agent Beta: Changed usage callouts to only be displayed when using a
model through the Zed provider.

<img width="674" alt="image"
src="https://github.com/user-attachments/assets/0ccb89e2-1dc1-4caf-88a7-49159f43979f"
/>
<img width="675" alt="image"
src="https://github.com/user-attachments/assets/790e5d45-905e-45da-affa-04ddd1d33c65"
/>

Release Notes:

- N/A

Closes #ISSUE

Release Notes:

- Agent Beta: Fixed a bug causing "Restore Checkpoint" buttons in the
agent panel not to be rendered.

Co-authored-by: Antonio Scandurra <me@as-cii.com>

Closes #ISSUE

Release Notes:

- N/A

This PR updates #29943 to fall back to loading agent panel settings from
the old `assistant` key if the `agent` key is not present. Edits to
these settings will also target `assistant` in this situation instead of
`agent` as before.

Release Notes:

- Agent Beta: Fixed a regression that caused the agent panel not to
load, or buttons in the agent panel not to work.

The API will return a Bad Request (with no error message) when tools
were used previously in the conversation but no tools are provided as
part of a new request.

Inserting a dummy tool seems to circumvent this error.

Release Notes:

- Fixed an error that could sometimes occur when editing using Copilot
Chat.

Co-authored-by: Bennet Bo Fenner <bennetbo@gmx.de>

This PR adds an enabled indicator in the Max Mode tooltip to show when
it is enabled:

<img width="409" alt="Screenshot 2025-05-06 at 9 49 48 AM"
src="https://github.com/user-attachments/assets/43d3f6dd-5658-467a-9df9-606ce326426a"
/>

Release Notes:

- Agent Beta: Added an indicator in the Max Mode tooltip to show when it
is enabled.

Co-authored-by: Danilo <danilo@zed.dev>

This PR adds a label to the Max Mode toggle, for increased clarity:

<img width="647" alt="Screenshot 2025-05-06 at 9 16 35 AM"
src="https://github.com/user-attachments/assets/38cd55fb-43ad-430b-8b4c-5adf707317cf"
/>

Release Notes:

- Agent Beta: Added a label to the Max Mode toggle.

This reverts commit 69fd7d57d78d07a05c7fd7d223356d8ecf520c64.

We started getting Bad Requests from the Copilot Chat API.
Seems like Microsoft stopped supporting this:
<img width="331" alt="image"
src="https://github.com/user-attachments/assets/46050063-f031-4836-82ff-219bdd45639a"
/>


Release Notes:

- agent: Disable `claude-3-7-sonnet-thinking` for Copilot Chat Provider
because it is not supported by Copilot Chat

Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>

This improves the new eval scenario by ~80% (`0.29` vs `0.525`) without
decreasing performance in the other evals.

Release Notes:

- Improved the performance of the `edit_file` tool.

Release Notes:

- agent: Fix Open Thread as Markdown not working when another panel is
focused

Co-authored-by: Bennet Bo Fenner <bennetbo@gmx.de>

Adds time-bucket separators to the thread history list:


https://github.com/user-attachments/assets/c9ac3ec4-b632-4ea5-8234-382b48de2bd6

Note: I'm simulating that Today is next Thursday so that I can show the
"This Week" bucket.

Release Notes:

- agent: Add date separators to Thread History

Closes https://github.com/zed-industries/zed/issues/27673
Closes https://github.com/zed-industries/zed/issues/29344
Closes #29863 

This PR fixes an issue where Zed was showing no language and `4:1` as a
line/column value on startup, as described in the linked issues. You can
actually see in the first issue that the user also experiences the same
issue as described in the second one, as his line/column value is
noticably also `4:1`.


https://github.com/user-attachments/assets/bb60e387-f4b8-4e05-80b3-4dadf1a01262

This issue arises because on assistant panel load, a new context is
created and its editor focused. However, the editor is not visible
despite having focus. The content for the editor for a new context is
`\n\n\n` and the cursor is inserted directly after that - this is where
the line:column position `4:1` comes from. For the assistant panel
editor, the language is intentionally hidden, this is why the language
is not shown on workspace load.
The issue is only present for as long as the user does not focus and
edit another editor, then that instance is focused and everything starts
to work properly again.

As this issue only arises with the old assistant panel, some staff
members were unable to reproduce in the linked issues. Once you set
`export ZED_DISABLE_STAFF=1` in your environment, you should also be
able to reproduce this issue consistently.

--- 

This PR fixes the issue by not creating a new context on assistant panel
load. This should not cause any regressions; every other code path I
checked creates a new context if no context is yet present.
Additionally, this also seems somewhat more reasonable, as users which
have the assistant panel disabled will never need a new context anyway,
so no context should be created.

In the following video, you can see this fixes the issue when the
assistant panel was not open the last time Zed was opened. If the panel
was open before Zed was closed, we will still properly focus the panel
and then the `4:1` will show again, which in that case is correct. The
assistant panel editor is focused and the missing language as well as
the line number then match what the user sees, experiences and expects.


https://github.com/user-attachments/assets/224a786b-52c7-4212-bccb-dff6d9db62c3


Release Notes:

- Fixed an issue where Zed would show no language and an incorrect
line/column value on startup.

Co-authored-by: Peter Tripp <peter@zed.dev>

Cherry-picked editor: Fix edit range for linked edits on do completion
(#29650)

Closes #29544

Fixes an issue where accepting an HTML completion would correctly edit
the start tag but incorrectly update the end tag due to incorrect linked
edit ranges.

I want to handle multi cursor case (as it barely works now), but seems
like this should go first. As, it might need whole `do_completions`
overhaul.

Todo:
- [x] Tests for completion aceept on linked edits

Before:



https://github.com/user-attachments/assets/917f8d2a-4a0f-46e8-a004-675fde55fe3d

After:



https://github.com/user-attachments/assets/84b760b6-a5b9-45c4-85d8-b5dccf97775f

Release Notes:

- Fixes an issue where accepting an HTML completion would correctly edit
the start tag but incorrectly update the end tag.

Co-authored-by: Smit Barmase <heysmitbarmase@gmail.com>

Cherry-picked editor: Handle more completions sort cases in Rust and
Python (#29926)

Closes #29725

Adds 3 more tests for Rust `into` and `await` cases, and Python
`__init__` case. Tweaks sort logic to accommodate them.

Release Notes:

- Improved code completion sort order, handling more cases with Rust and
Python.

Co-authored-by: Smit Barmase <heysmitbarmase@gmail.com>

Cherry-picked zed: Fix migration message sometimes showing up on other
tabs (#29917)

<img width="1178" alt="image"

src="https://github.com/user-attachments/assets/6b76fe7d-0621-4d61-936e-bfe4f72cc614"
/>


Release Notes:

- Fixed an issue where the keymap/settings migration message sometimes
showing up on tabs other than `settings.json` and `keymap.json`.

Co-authored-by: Smit Barmase <heysmitbarmase@gmail.com>

Cherry-picked Fix panic in update_selection_occurrence_highlights
(#29979)

Closes #ISSUE

Release Notes:

- Fixed a (rare) panic when highlighting text in the editor

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

While investigating https://github.com/zed-industries/zed/issues/28076,
I found out often times the content type header of a website comes with
more data, such as the `charset`. So instead of doing an equal
comparison, I changed to a `starts_with`.

You can see an example here:

```shell
$ curl -sS -D - https://github.com/zed-industries/zed/blob/main/Cargo.toml -o /dev/null | head -n 10
HTTP/2 200
date: Sun, 20 Apr 2025 10:19:52 GMT
content-type: text/html; charset=utf-8
vary: X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame,Accept-Encoding, Accept, X-Requested-With
etag: W/"92dabf048b34d04a1b1d94e29cae4aca"
cache-control: max-age=0, private, must-revalidate
strict-transport-security: max-age=31536000; includeSubdomains; preload
x-frame-options: deny
x-content-type-options: nosniff
x-xss-protection: 0
```

Release Notes:

- Improved Content Type matching of `/fetch` commands in Assistant

Co-authored-by: Peter Tripp <peter@zed.dev>

Release Notes:

- Fixed a bug that would cause rejecting a hunk from the agent to delete
the file if the agent had decided to rewrite that file from scratch.

Closes https://github.com/zed-industries/zed/issues/29821

Release Notes:

- Fixed an issue in the agent panel where OpenAI requests would fail if
the assistant begins its response with a tool call.

Cleaning up as I introduced a few regressions in this PR:
https://github.com/zed-industries/zed/pull/29866.

Release Notes:

- N/A

Closes #ISSUE

Release Notes:

- Agent Beta: Renamed the top-level `assistant` settings key to `agent`.
A migration for existing settings files is included.
- Agent Beta: Moved the `assistant::ToggleFocus`,
`assistant::ToggleModelSelector`, and `assistant::OpenRulesLibrary`
actions to the `agent` namespace. Existing keymaps that mention these
actions by their old names will continue to work.

---------

Co-authored-by: Max <max@zed.dev>

Closes https://github.com/zed-industries/zed/issues/29337

Release Notes:

- Fixed a bug where the `prompt` field was ignored on custom key
bindings for `InlineAssist`

Co-authored-by: Michael Sloan <mgsloan@gmail.com>

Release Notes:

- Added the ability to drag files and tabs onto the new agent panel.

---------

Co-authored-by: Michael Sloan <mgsloan@gmail.com>

Fixes https://github.com/zed-industries/zed/issues/29909 

🍐'd with @nathansobo 

Release Notes:

- N/A

---------

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

Release Notes:

- N/A

This PR adds an upsell to try Zed Pro

Release Notes:

- N/A

---------

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

You can set `agent_font_size` as a top-level settings key. You can also
use `zed::IncreaseBufferFontSize` and `zed::DecreaseBufferFontSize` and
`zed::ResetBufferFontSize` the agent panel is focused via the standard
bindings to adjust the agent font size. In the future, it might make
sense to rename these actions to be more general since "buffer" is now a
bit of a misnomer. 🍐'd with @mikayla-maki

Release Notes:

- N/A

---------

Co-authored-by: Mikayla Maki <mikayla.c.maki@gmail.com>

Release Notes:

- Made context attachments in inline assist prompts persist across
inline assist invocations.

Co-authored-by: Michael Sloan <mgsloan@gmail.com>