Remove /cargo-workspace slash command (#38354)

This PR removes the `/cargo-workspace` slash command.

We never fully shipped this—with it requiring explicit opt-in via a
setting—and it doesn't seem like the feature is needed in an agentic
world.

Release Notes:

- Removed the `/cargo-workspace` slash command.

crates/agent_ui/src/agent_ui.rs

@@ -14,7 +14,6 @@ mod message_editor;
 mod profile_selector;
 mod slash_command;
 mod slash_command_picker;
-mod slash_command_settings;
 mod terminal_codegen;
 mod terminal_inline_assistant;
 mod text_thread_editor;
@@ -46,7 +45,6 @@ use std::any::TypeId;
 use crate::agent_configuration::{ConfigureContextServerModal, ManageProfilesModal};
 pub use crate::agent_panel::{AgentPanel, ConcreteAssistantPanelDelegate};
 pub use crate::inline_assistant::InlineAssistant;
-use crate::slash_command_settings::SlashCommandSettings;
 pub use agent_diff::{AgentDiffPane, AgentDiffToolbar};
 pub use text_thread_editor::{AgentPanelDelegate, TextThreadEditor};
 use zed_actions;
@@ -257,7 +255,6 @@ pub fn init(
     cx: &mut App,
 ) {
     AgentSettings::register(cx);
-    SlashCommandSettings::register(cx);
 
     assistant_context::init(client.clone(), cx);
     rules_library::init(cx);
@@ -413,8 +410,6 @@ fn register_slash_commands(cx: &mut App) {
     slash_command_registry.register_command(assistant_slash_commands::DeltaSlashCommand, true);
     slash_command_registry.register_command(assistant_slash_commands::OutlineSlashCommand, true);
     slash_command_registry.register_command(assistant_slash_commands::TabSlashCommand, true);
-    slash_command_registry
-        .register_command(assistant_slash_commands::CargoWorkspaceSlashCommand, true);
     slash_command_registry.register_command(assistant_slash_commands::PromptSlashCommand, true);
     slash_command_registry.register_command(assistant_slash_commands::SelectionCommand, true);
     slash_command_registry.register_command(assistant_slash_commands::DefaultSlashCommand, false);
@@ -434,21 +429,4 @@ fn register_slash_commands(cx: &mut App) {
         }
     })
     .detach();
-
-    update_slash_commands_from_settings(cx);
-    cx.observe_global::<SettingsStore>(update_slash_commands_from_settings)
-        .detach();
-}
-
-fn update_slash_commands_from_settings(cx: &mut App) {
-    let slash_command_registry = SlashCommandRegistry::global(cx);
-    let settings = SlashCommandSettings::get_global(cx);
-
-    if settings.cargo_workspace.enabled {
-        slash_command_registry
-            .register_command(assistant_slash_commands::CargoWorkspaceSlashCommand, true);
-    } else {
-        slash_command_registry
-            .unregister_command(assistant_slash_commands::CargoWorkspaceSlashCommand);
-    }
 }

crates/agent_ui/src/slash_command_settings.rs

@@ -1,37 +0,0 @@
-use anyhow::Result;
-use gpui::App;
-use schemars::JsonSchema;
-use serde::{Deserialize, Serialize};
-use settings::{Settings, SettingsKey, SettingsSources, SettingsUi};
-
-/// Settings for slash commands.
-#[derive(Deserialize, Serialize, Debug, Default, Clone, JsonSchema, SettingsUi, SettingsKey)]
-#[settings_key(key = "slash_commands")]
-pub struct SlashCommandSettings {
-    /// Settings for the `/cargo-workspace` slash command.
-    #[serde(default)]
-    pub cargo_workspace: CargoWorkspaceCommandSettings,
-}
-
-/// Settings for the `/cargo-workspace` slash command.
-#[derive(Deserialize, Serialize, Debug, Default, Clone, JsonSchema)]
-pub struct CargoWorkspaceCommandSettings {
-    /// Whether `/cargo-workspace` is enabled.
-    #[serde(default)]
-    pub enabled: bool,
-}
-
-impl Settings for SlashCommandSettings {
-    type FileContent = Self;
-
-    fn load(sources: SettingsSources<Self::FileContent>, _cx: &mut App) -> Result<Self> {
-        SettingsSources::<Self::FileContent>::json_merge_with(
-            [sources.default]
-                .into_iter()
-                .chain(sources.user)
-                .chain(sources.server),
-        )
-    }
-
-    fn import_from_vscode(_vscode: &settings::VsCodeSettings, _current: &mut Self::FileContent) {}
-}