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- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Release Notes:

- N/A

## Context

<!-- What does this PR do, and why? How is it expected to impact users?
     Not just what changed, but what motivated it and why this approach.

Link to Linear issue (e.g., ENG-123) or GitHub issue (e.g., Closes #456)
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- [ ] Tests cover the new/changed behavior
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Release Notes:

- Marked `.json.dist` as a `json` file

## Context

<!-- What does this PR do, and why? How is it expected to impact users?
     Not just what changed, but what motivated it and why this approach.

Link to Linear issue (e.g., ENG-123) or GitHub issue (e.g., Closes #456)
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## Self-Review Checklist

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- [ ] Tests cover the new/changed behavior
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Release Notes:

- Marked `.jshintrc` as a `jsonc` file

Closes https://github.com/zed-industries/zed/issues/36618

I'm not sure if there is a specific issue for this, but I noticed it
while working on some other PRs, as have some other people:
https://github.com/zed-industries/zed/issues/20525#issuecomment-2469507157

Cause: when running `copy highlight JSON` from the command palette,
input was disabled due to the modal, and the selection method call
always returns `None`. This most likely works as expected when bound to
a keyboard shortcut, but since there is no default shortcut most people
probably don't execute this action that way.

Fix: just grab the selection directly; I don't think this command needs
to be IME-aware, so it doesn't need to use `selected_text_range`.

NOTE: There still seems to be an issue where `VISUAL LINE` mode doesn't
select anything, even when I called `selections.newest_adjusted`, so I
opted to try and keep the implementation closest to what it was doing
before. (edit: actually this might just be the same as #45799?).

Release Notes:

- Fixed `editor: copy highlight JSON` not limiting to the current
selection

Release Notes:

- N/A

---------

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

## Context

Fixes a regression where typing a space in the Git Panel's "Switch
Branch" picker would make no response at all instead of inserting the
character. The same picker in the title-bar Git Switcher was unaffected.

Root cause: `PopoverMenu` links the opened menu's focus handle into the
parent element's dispatch tree so that `contains_focused` returns `true`
on the parent while the popover is open. `GitPanel::dispatch_context`
uses
`contains_focused` to decide whether to add the `ChangesList` key
context, so that context is active while the branch picker is open.
Because `Picker` and `Editor` have no binding for a bare `space`,
dispatch fell through to
the `"GitPanel && ChangesList"` binding, which maps `space` to
`git::ToggleStaged`, consuming the keystroke before it could reach the
text input.

The fix narrows the context guard to `"GitPanel && ChangesList &&
!GitBranchSelector"`,
so those bindings are skipped whenever the branch picker (or any other
`GitBranchSelector` context) is focused inside the panel.

The same change is applied to the vim keymap, which would have similarly
intercepted `k`,
`j`, `x`, and other letter keys typed in the picker, this behavior was
observed in https://github.com/zed-industries/zed/issues/52617 and I
made the same fix in https://github.com/zed-industries/zed/pull/52687

Closes #52771 and potentially
https://github.com/zed-industries/zed/issues/52617

Video of the manual test of the fix below :

[Screencast from 2026-03-31
00-01-54.webm](https://github.com/user-attachments/assets/76f64507-4f5a-4a8e-8582-4cdb9bec584c)

## How to Review

- `assets/keymaps/default-linux.json`, `default-windows.json`,
`default-macos.json`, `vim.json` : identical one-line change in each: I
added `&& !GitBranchSelector` to
  the `"GitPanel && ChangesList"` 
. No Rust changes needed.

## Self-Review Checklist

- [x] I've reviewed my own diff for quality, security, and reliability
- [ ] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the UI/UX checklist
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Release Notes:

- Fixed space and other keys being swallowed when typing in the Git
Panel branch picker

## Context

When `vim_mode` is enabled, opening the branch selector popover in the
Git panel and pressing `i`, `j`, `k`, or `x` triggered Git panel actions
(`FocusEditor`, `SelectNext`, `ToggleStaged`, etc.) instead of reaching
the picker's search field.

The `"GitPanel && ChangesList"` keybinding block in `vim.json` matched
whenever _any_ child of the git panel's focus handle was focused —
including the branch picker popover — because
`GitPanel::dispatch_context()` adds `ChangesList` based on
`focus_handle.contains_focused()`, which is true for all children, not
just the changes list itself.

The branch picker's root element already sets
`.key_context("GitBranchSelector")` (branch_picker.rs). GPUI's `Not`
predicate evaluates against the entire context path, so adding `&&
!GitBranchSelector` to the block's context suppresses all those bindings
whenever the picker is open, and restores them exactly as before once
it's closed.

Closes #52617

Video of the manual test of the fix below :

[Screencast from 2026-03-29
22-01-11.webm](https://github.com/user-attachments/assets/217e8e31-9bee-4e77-a7aa-0c094874ed9a)

## How to Review

- `assets/keymaps/vim.json` : changed the `"GitPanel && ChangesList"`
context string ,I added`&& !GitBranchSelector`.

## Self-Review Checklist

- [x] I've reviewed my own diff for quality, security, and reliability
- [ ] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the UI/UX checklist
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Release Notes:

- Fixed branch picker in the Git panel stealing vim keystrokes (`i`,
`j`, `k`, `x`) when vim mode is enabled

This PR makes it so that clicking on sidebar threads behaves the same as
the "focus agent panel" keybinding, namely it hides zoomed panels and
brings focus to the agent panel.

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Release Notes:

- N/A

The terminal panel is now flexible by default, but only when in a left
or right panel. This PR fixes a bug where resizing the terminal panel
was incorrectly setting the flex value instead of the fixed size when
the terminal panel was in the bottom dock and flexible.

Release Notes:

- N/A

Profiling streamed agent responses showed `parse_markdown_with_options`
consuming ~50% of CPU cycles. The hot path is `LinkFinder` scanning
every `Text` event, including code block content, where detected URLs
are never rendered as links.

In the profiled case, the markdown had 235k+ URLs inside code blocks,
making linkify extremely costly per-parse. This PR short-circuits the
text-merging + linkify path for code block content.

Release Notes:

- N/A

I recently encountered some issue on my mac and I tried to uninstall Zed
completely. However the current guide to remove user data does not cover
some configs that Zed uses. There are also some directories that should
be removed according to the doc but never exist. So I have this pull
request to make the user data directories more accurate, according to my
own experience.

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Release Notes:

- N/A: doc update

---------

Co-authored-by: Christopher Biscardi <chris@christopherbiscardi.com>

This changes the terminology from "focused entry" to "active entry", and
adds 4 properties that rebuild_contents should maintain for the active
entry:

- We should always have an active_entry after rebuild_contents
- The active entry's workspace should always be == to the active
multiworkspace
- If there's a thread, the active entry should always reflect that
thread
- There should always be exactly 1 active entry

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Closes #ISSUE

Release Notes:

- N/A

This PR implements basic sidebar deserialization. When the
multiworkspace decides to save itself, it causes the sidebar to
serialize as well. The sidebar can trigger this as well via an event.

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Release Notes:

- N/A

This PR changes things so that when the user mutates their current
project (e.g. adding a folder), the thread entries now update the
currently running threads to be pointing at this new set of folders.

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

TODO:
- [x] Manually test this case

Release Notes:

- N/A

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable


Icons aren't showing because I'm forcing the UI to be visible on macOS,
but things look ok on the right sidebar:

<img width="389" height="955" alt="Screenshot 2026-03-30 at 7 36 06 PM"
src="https://github.com/user-attachments/assets/269fe9c9-1212-4c1e-b8d9-1694db70adf3"
/>


Release Notes:

- N/A

Release Notes:

- The git diff diff view now automatically switches from split mode to
unified mode when the pane is narrower than a configurable minimum
column count. You can configure this via the new
`minimum_split_diff_width` setting.

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Closes #ISSUE

Release Notes:

- N/A

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Closes #ISSUE

Release Notes:

- N/A

Add a debug-only (`cfg(debug_assertions)`) action `DumpWorkspaceInfo`
that opens a read-only buffer with a dump of all workspace state. This
is useful for debugging the sidebar's view of workspaces and threads,
since the sidebar is currently the only way to see workspace-related
state.

For each workspace in the MultiWorkspace it shows:

- **Workspace DB ID** — for cross-referencing with persistence
- **All worktrees** with their paths, branches, and visibility
- **Whether each worktree is a git linked worktree** and where it links
to
- **Active agent thread** with title, session ID, status, and entry
count
- **Background agent threads** with the same detail
- **A warning** if the agent panel's workspace ID doesn't match the
workspace

Example output:
```
MultiWorkspace: 3 workspace(s)
Active workspace index: 1

--- Workspace 0 ---
Workspace DB ID: WorkspaceId(42)
Worktrees:
  - /Users/eric/repo/scratch3 [branch: refs/heads/scratch3] [linked worktree -> /Users/eric/repo/scratch]
Active thread: Git Worktree Path Consistency Check (session: 575b4349-...) [idle, 42 entries]

--- Workspace 1 (active) ---
Workspace DB ID: WorkspaceId(57)
Worktrees:
  - /Users/eric/repo/worktrees/zed/my-branch/zed [branch: refs/heads/my-branch] [linked worktree -> /Users/eric/repo/zed]
Active thread: Sidebar Not Displaying Git Worktree (session: 8f337c5c-...) [generating, 17 entries, awaiting confirmation]
Background threads (1):
  - Previous Investigation (session: abc12345-...) [idle, 83 entries]

--- Workspace 2 ---
Workspace DB ID: WorkspaceId(63)
Worktrees:
  - /Users/eric/repo/ex [branch: refs/heads/main]
Active thread: (none)
```

### Implementation

The action and handler live in the `sidebar` crate (close to what they
debug), following the same pattern as `language_tools` owning
`OpenLanguageServerLogs` and `debugger_tools` owning
`OpenDebugAdapterLogs`. The `zed` crate has only a one-line
registration.

Two small public accessors were added to `AgentPanel`:
- `workspace_id()` — exposes the panel's workspace ID for mismatch
detection
- `background_threads()` — exposes retained background conversation
views

Release Notes:

- N/A

Workspaces with no threads weren't being shown in the sidebar which can
make it easy to lose your sense of place. This PR works to address that
by showing these workspaces as a "New Thread" button which also shows
the work trees associated with that workspace.

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Release Notes:

- N/A

Use `AgentSettings::get_layout(cx)` to retrieve the current, exact value of the user's layout settings, and `AgentSettings::set_layout(WindowLayout::agent())` or `AgentSettings::set_layout(cached_user_settings)` to write to them.

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Closes #ISSUE

Release Notes:

- N/A

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Closes #ISSUE

Release Notes:

- N/A

The Emmet extension is enabled for Elixir files (`.ex`) because of the
`~H` sigil, but this is a bit unexpected if you work exclusively with
HEEx files (`.heex`) or you don't actually use Phoenix in any capacity

With this change, the user must explicitly opt into Emmet for Elixir
files, just like Tailwind

Release Notes:

- N/A

Merge first: https://github.com/zed-industries/zed.dev/pull/1861

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Release Notes:

- N/A

## Context

TODO

## Self-Review Checklist

<!-- Check before requesting review: -->
- [ ] I've reviewed my own diff for quality, security, and reliability
- [ ] Unsafe blocks (if any) have justifying comments
- [ ] The content is consistent with the [UI/UX
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- [ ] Tests cover the new/changed behavior
- [ ] Performance impact has been considered and is acceptable

Release Notes:

- N/A

---------

Co-authored-by: Max Brunsfeld <maxbrunsfeld@gmail.com>

## Context

`update_settings_file` deletes unrelated settings when the settings file
contains deprecated keys that need migration. For example, changing the
model from the Agent Panel overwrites the entire `agent` block instead
of just updating `default_model`.

The root cause is that `edits_for_update` used
`parse_json_with_comments` (strict parser), which returns `Err` on
deprecated/unknown fields. The error is swallowed by `log_err()`,
falling back to `Default::default()` (empty settings). The diff then
sees everything as new and replaces the entire block.

The fix switches to `parse_json` (the fallible/lenient parser), which
returns `Some(parsed_value)` even when deprecated fields are present -
the same pattern already used by `parse_and_migrate_zed_settings`.

## Fixes #41344

## How to Review

Single-file change in `settings_store.rs`, focus on `edits_for_update` .
Compare with `parse_and_migrate_zed_settings` (line 702) which already
uses the same `parse_json` approach.

## Self-Review Checklist

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

## Video
[Screencast from 2026-03-21
00-36-12.webm](https://github.com/user-attachments/assets/31bd584a-2674-4c91-bdb2-69ed8fa35e88)


### Note : Reopens previous work from closed PR #52081 (fork was
deleted)

Release Notes:

- Fixed settings being overwritten when updating a single setting via UI
while the settings file contains deprecated keys.

## Summary

- On Linux, middle-clicking a tab to close it also triggered a paste of
the primary selection into the editor behind it, because the event
bubbled to the editor's `mouse_up()` handler
- Added `cx.stop_propagation()` in the `on_aux_click` handler in
`pane.rs` after closing the tab, matching the pattern already used by
the editor's own middle-click handler in `element.rs:1037`

Closes #47381

## Test plan

- [x] `cargo test -p workspace` passes (124 tests, 0 failures)
- [x] Select text in editor (filling primary selection), middle-click a
tab to close it → tab closes, no paste in the editor behind
- [x] Middle-click inside the editor area → still pastes from primary
selection as expected

Release Notes:

- Fixed middle-click on a tab to close it also pasting into the editor
on Linux.

We should generally prefer using the normal key value store

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Release Notes:

- N/A

Small UI tweak post the introduction of the favorite feature so that
list items don't overlap each other.

Release Notes:

- N/A

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Release Notes:

- N/A

---------

Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>
Co-authored-by: Danilo Leal <daniloleal09@gmail.com>

Adds a section on how to configure Zed to use a custom Expert build.

There's already [*some*
docs](https://zed.dev/docs/configuring-languages#possible-configuration-options)
on how to do this, but I think it's important to make it clear that the
`--stdio` flag is also required for expert.

Release Notes:

- N/A

Linear gradients in dark color ranges (5-15% lightness) show visible
banding due to 8-bit quantization — only ~7 distinct values exist in
that range, producing hard steps instead of smooth transitions. This
affects every dark theme in Zed.

## What this does

Adds triangular-distributed dithering after gradient interpolation in
both the Metal and HLSL fragment shaders. The noise breaks up
quantization steps at the sub-pixel level, producing perceptually smooth
gradients.

## How it works

Two hash-based pseudo-random values (seeded from fragment position x
golden ratio) are summed to produce a triangular probability
distribution. This is added to the RGB channels at +/-1/255 amplitude.

- **Triangular PDF** — mean-zero, so no brightness shift across the
gradient
- **+/-1/255 amplitude** — below perceptual threshold, invisible on
bright gradients where 8-bit precision is already sufficient
- **Deterministic per-pixel** — seeded from position, no temporal
flickering
- **Zero-cost** — a couple of `fract`/`sin` per fragment, negligible vs.
the existing gradient math

### Channel-specific amplitudes

  | Channel | Amplitude | Rationale |

|---------|-----------|----------------------------------------------------------------------------------------------------|
| RGB | ±2/255 | Breaks dark-on-dark banding where adjacent 8-bit values
are perceptually close |
| Alpha | ±3/255 | Alpha gradients over dark backgrounds need stronger
noise — α × dark color = tiny composited steps |

The higher alpha amplitude is necessary because when a semi-transparent
gradient (e.g., 0.4 → 0.0 alpha) composites over a dark background, the
effective visible difference per quantization step is smaller than the
RGB case. ±3/255 is still well below the perceptual threshold on
bright/opaque elements.

## Scope

Two files changed, purely additive:

| File | Change |
|------|--------|
| `crates/gpui_macos/src/shaders.metal` | 13 lines after `mix()` in
`fill_color()` |
| `crates/gpui_windows/src/shaders.hlsl` | 13 lines after `lerp()` in
`gradient_color()` |

No changes to Rust code, no API changes, no new dependencies.

## Screenshots

<img width="1886" height="1003" alt="gradient_dithering_before"
src="https://github.com/user-attachments/assets/f75ae93b-b142-4d0e-9b61-e08f30fe1758"
/>

_Before_

<img width="1902" height="1052" alt="gradient_dithering_after"
src="https://github.com/user-attachments/assets/7aee9a36-f578-4e08-a846-44d092bcf043"
/>

_After_

## Test plan

This is a shader-level fix; no Rust test harness exists for visual
output. Manual testing is appropriate here. Visual regression tests
cover UI layout, not sub-pixel rendering quality.

**Manual (macOS):**

- [x] Dark gradients (5-13% lightness range) — banding eliminated
- [x] Bright gradients — no visible difference (dither amplitude below
precision threshold)
- [x] Oklab and sRGB color spaces — both paths dithered
- [x] Solid colours, pattern fills, checkerboard — unaffected (dither
only applies to LinearGradient case)
- [x] Alpha gradients (semi-transparent over dark bg) — banding
eliminated with alpha dithering
- [x] Path gradients (paint_path) — same fill_colour() function,
dithering applies

**Windows:** HLSL change is identical logic with HLSL built-ins
(`frac`/`lerp` vs `fract`/`mix`) — not tested locally.

Release Notes:

- Improved linear gradient rendering by adding dithering to eliminate
visible banding in dark color ranges

Liam

- **Remove some of the settings types from ui**
- **drag settings-less ui across the line**

Self-Review Checklist:

- [ ] I've reviewed my own diff for quality, security, and reliability
- [ ] Unsafe blocks (if any) have justifying comments
- [ ] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [ ] Tests cover the new/changed behavior
- [ ] Performance impact has been considered and is acceptable

Closes #ISSUE

Release Notes:

- N/A

---------

Co-authored-by: Lukas Wirth <me@lukaswirth.dev>

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Closes #ISSUE

Release Notes:

- N/A

Read base_text from the `MultiBufferSnapshot` instead of the live
`BufferDiff` entity in `prepare_restore_change`. The live entity's
base_text may already reflect a newer git HEAD while the snapshot still
holds old hunk byte ranges, causing `Rope::slice` to panic.

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Closes ZED-64P

Release Notes:

- N/A

This PR adds the ability to change both the terminal and agent panels
between fixed and flexible sizing using the status bar button right
click menu. The value persists in your settings, similar to the dock
position.

I've also slightly tweaked the styling of the "Dock Left" and "Dock
Right" items in the right-click menu, adding the current value as an
item with a check beside it, to make it clear that it's a selectable
option.

Release Notes:

- N/A

Previously we were iterating over all hunks across all diffs on every
frame. Now we can read off the required information as a `SumTree`
summary in constant time.

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [ ] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Release Notes:

- git: Fixed bad performance in large branch diffs.

## Context

Fixes agent panel keybindings on Linux, mirroring the Windows fix from
#43692.

On Linux, `Ctrl+Y` (the previous `agent::AllowOnce` binding) is
intercepted by the focused text input as "redo", so the shortcut did
nothing when the message editor was focused. This is the same issue
fixed for Windows in #43692.

Changes (Linux and Windows):
- `agent::AllowAlways`: added `shift-alt-q` (was unbound on all
platforms)
- `agent::AllowOnce`: `ctrl-y` → `shift-alt-a` (Linux); already
`shift-alt-a` on Windows
- `agent::RejectOnce`: `shift-alt-x` on both platforms — `shift-alt-z`
conflicted with `agent::RejectAll` bound in other contexts, causing the
keybinding hint to not appear in the UI
- `agent::ToggleNavigationMenu`: `ctrl-shift-j` → `shift-alt-j` (Linux)
- `agent::ToggleOptionsMenu`: `ctrl-alt-i` → `shift-alt-i` (Linux)

Closes #52472

## How to Review

Two files changed: `assets/keymaps/default-linux.json` and
`assets/keymaps/default-windows.json`. Check the `AgentPanel` context
block in each.

## Self-Review Checklist

- [x] I've reviewed my own diff for quality, security, and reliability
- [ ] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [ ] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable


Note : Reopens previous work from closed PR #52479 (fork was deleted)

Release Notes:

- Fixed agent panel `Allow`, `Always Allow`, and `Reject` keybindings
not working when the message editor is focused on Linux
e

When generation stops due to the per-response output limit, Zed was
surfacing "Max tokens reached", which implies the full context window
was exhausted. In reality, `max_output_tokens` (the per-response cap)
may have been hit a different condition.

This change distinguishes between the two cases: if `output_tokens >=
max_output_tokens`, it surfaces "Maximum output tokens reached";
otherwise it falls back to "Maximum tokens reached".

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the UI/UX checklist
- [ ] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Closes #50254


Note : Reopens #50372 suggested by @bennetbo 

Release Notes:

- Fixed misleading "Max tokens reached" error by distinguishing between
per-response output token limit and total context window limit.

---------

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

This is replaced by eval_cli

Release Notes:

- N/A

Release Notes:

- N/A

Currently, if you try to re-order a favorite, the favorite will not
reorder, but the actual channels will.


https://github.com/user-attachments/assets/1fbab9ea-4ff4-473f-8de3-d3b60696c5a1

Additionally, a new bug seems to be that if you reorder channels, focus
jumps to a favorite:


https://github.com/user-attachments/assets/fa776ad2-8648-4e68-a253-a98f57bd4951

This PR allows for re-ordering of favorites independent of the actual
channels, and fixes the focusing bug


https://github.com/user-attachments/assets/977e575a-055c-4f26-8183-2744ff7f8f56

I didn't feel comfortable adding just the functionality/fixes alone, so
I added a function to represent the state of the collab panel as a list
of strings, like how testing around the project panel is, and wrote a
few tests to ensure the behavior was pinned down.

The tests cover testing:

- Favoriting/unfavoriting
- Reordering favorites without impacting order of channels in the
channels list
- Reordering channels in the channels list without impacting order of
favorites

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Closes #ISSUE

Release Notes:

- Added the ability to reorder favorited collab channels.

Follow up to https://github.com/zed-industries/zed/pull/52720

This PR renders the same icons we do in the title bar depending on the
type of remote connection (SSH, WSL, etc.).

Release Notes:

- N/A

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Release Notes:

- Improved performance documentation in "Developing Zed"

---------

Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>

Release Notes:

- N/A or Added/Fixed/Improved ...

Fix the outline entry sort order to prefer the entry whose heading
starts at the cursor position.

Closes #52418

Release Notes:

- Fixed Outline Panel selection being off-by-one in Markdown heading boundaries

---------

Co-authored-by: dino <dinojoaocosta@gmail.com>

Release Notes:

- Added file icon for EditorConfig (`.editorconfig`)

---------

Co-authored-by: Danilo Leal <daniloleal09@gmail.com>

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Closes #45986

Release Notes:

- Fixed postfix snippets now creating 1 `undo` actions instead of 2.

## Context

Closes #51330

When the cursor is at the very end of a file,
`find_specific_language_server_in_selection` in
`crates/editor/src/lsp_ext.rs` silently skips the selection because the
anchor's `buffer_id` is `None`. This causes `editor: switch source
header` (clangd) and rust-analyzer extension commands (`expand macro`,
`open docs`, `open playground`) to do nothing.

The fix falls back to the singleton buffer's ID when the anchor has no
`buffer_id`.

## How to Review

Single file change in `crates/editor/src/lsp_ext.rs`. The diff is small
— pre-compute the singleton buffer ID, then use it as fallback in the
`filter_map` closure. An integration test verifies the fix.

## Self-Review Checklist

- [x] Reviewed own diff for quality, security, and reliability
- [x] No unsafe blocks
- [x] Tests pass (639 editor tests, 0 failures)
- [x] Manual testing: switch source header works at beginning, middle,
and end of C++ file

## Test Plan

- [x] New integration test: `test_find_language_server_at_end_of_file` —
verifies `find_specific_language_server_in_selection` returns `Some` at
both beginning and end of file
- [x] Confirmed the test fails without the fix (assertion on "should
find language server at end of file")
- [x] Manual: open a C++ file with clangd, place cursor at very end, run
`switch source header` — now correctly opens the header
- [x] Manual: verify it still works at beginning and middle of file
(non-regression)
- [x] `cargo test -p editor` — 639 passed, 0 failed

Release Notes:

- Fixed `editor: switch source header` and other LSP extension commands
not working when the cursor is at the very end of a file.

---------

Co-authored-by: Florian Trehaut <florian.trehaut@hillcode.fr>
Co-authored-by: Kirill Bulatov <kirill@zed.dev>

Due to the async nature of markdown parsing, sometimes subagent cards
would not scroll fully to the bottom of the content because the
`scroll_to_bottom` function was being called just while the agent was
running... and sometimes, it'd finish running before the markdown had
fully finished parsing. The solution is to remove the `is_running`
conditional.

Release Notes:

- Agent: Improved auto-scroll of subagent content in preview cards,
ensuring the content is always visible until the end.