agent: Fix review button not working while not focused in the message editor (#40144)

This PR fixes a bug where the review icon button wouldn't properly open
the review tab if you weren't focused in the agent panel's message
editor. The solution was to register the action also at the workspace
level.

Release Notes:

- agent: Fixed a bug where the review icon button wouldn't work to open
the review tab if focus weren't in the panel's message editor.

crates/agent_ui/src/acp/thread_view.rs

@@ -1254,12 +1254,6 @@ impl AcpThreadView {
         .detach();
     }
 
-    fn open_agent_diff(&mut self, _: &OpenAgentDiff, window: &mut Window, cx: &mut Context<Self>) {
-        if let Some(thread) = self.thread() {
-            AgentDiffPane::deploy(thread.clone(), self.workspace.clone(), window, cx).log_err();
-        }
-    }
-
     fn open_edited_buffer(
         &mut self,
         buffer: &Entity<Buffer>,
@@ -5445,7 +5439,6 @@ impl Render for AcpThreadView {
         v_flex()
             .size_full()
             .key_context("AcpThread")
-            .on_action(cx.listener(Self::open_agent_diff))
             .on_action(cx.listener(Self::toggle_burn_mode))
             .on_action(cx.listener(Self::keep_all))
             .on_action(cx.listener(Self::reject_all))

crates/agent_ui/src/agent_panel.rs

@@ -19,9 +19,10 @@ use zed_actions::agent::{OpenClaudeCodeOnboardingModal, ReauthenticateAgent};
 use crate::acp::{AcpThreadHistory, ThreadHistoryEvent};
 use crate::ui::{AcpOnboardingModal, ClaudeCodeOnboardingModal};
 use crate::{
-    AddContextServer, DeleteRecentlyOpenThread, Follow, InlineAssistant, NewTextThread, NewThread,
-    OpenActiveThreadAsMarkdown, OpenHistory, ResetTrialEndUpsell, ResetTrialUpsell,
-    ToggleNavigationMenu, ToggleNewThreadMenu, ToggleOptionsMenu,
+    AddContextServer, AgentDiffPane, DeleteRecentlyOpenThread, Follow, InlineAssistant,
+    NewTextThread, NewThread, OpenActiveThreadAsMarkdown, OpenAgentDiff, OpenHistory,
+    ResetTrialEndUpsell, ResetTrialUpsell, ToggleNavigationMenu, ToggleNewThreadMenu,
+    ToggleOptionsMenu,
     acp::AcpThreadView,
     agent_configuration::{AgentConfiguration, AssistantConfigurationEvent},
     slash_command::SlashCommandCompletionProvider,
@@ -140,6 +141,16 @@ pub fn init(cx: &mut App) {
                 .register_action(|workspace, _: &Follow, window, cx| {
                     workspace.follow(CollaboratorId::Agent, window, cx);
                 })
+                .register_action(|workspace, _: &OpenAgentDiff, window, cx| {
+                    let thread = workspace
+                        .panel::<AgentPanel>(cx)
+                        .and_then(|panel| panel.read(cx).active_thread_view().cloned())
+                        .and_then(|thread_view| thread_view.read(cx).thread().cloned());
+
+                    if let Some(thread) = thread {
+                        AgentDiffPane::deploy_in_workspace(thread, workspace, window, cx);
+                    }
+                })
                 .register_action(|workspace, _: &ToggleNavigationMenu, window, cx| {
                     if let Some(panel) = workspace.panel::<AgentPanel>(cx) {
                         workspace.focus_panel::<AgentPanel>(window, cx);