Enable 'Add to Agent Thread' in worktree-less windows (#49084)

Om Chillure created 2 months ago

Fixes #49062

Updates `crates/agent_ui/src/inline_assistant.rs` to ensure the
TerminalPanel correctly syncs the assistant_enabled
state on initialization. This fixes the issue where "Add to Agent
Thread" was missing in worktree-less windows.

## Video: 
[Screencast from 2026-02-13
10-31-43.webm](https://github.com/user-attachments/assets/bee0df67-0ecf-460c-8123-a72c4790c719)
 
## Release Notes
- Fixed an issue where "Add to Agent Thread" was missing from the
terminal context menu in windows without open folders.

Change summary

crates/agent_ui/src/inline_assistant.rs | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)

Detailed changes

crates/agent_ui/src/inline_assistant.rs

@@ -132,9 +132,9 @@ impl InlineAssistant {
             })
             .detach();
 
-        let workspace = workspace.downgrade();
+        let workspace_weak = workspace.downgrade();
         cx.observe_global::<SettingsStore>(move |cx| {
-            let Some(workspace) = workspace.upgrade() else {
+            let Some(workspace) = workspace_weak.upgrade() else {
                 return;
             };
             let Some(terminal_panel) = workspace.read(cx).panel::<TerminalPanel>(cx) else {
@@ -146,6 +146,19 @@ impl InlineAssistant {
             });
         })
         .detach();
+
+        cx.observe(workspace, |workspace, cx| {
+            let Some(terminal_panel) = workspace.read(cx).panel::<TerminalPanel>(cx) else {
+                return;
+            };
+            let enabled = AgentSettings::get_global(cx).enabled(cx);
+            if terminal_panel.read(cx).assistant_enabled() != enabled {
+                terminal_panel.update(cx, |terminal_panel, cx| {
+                    terminal_panel.set_assistant_enabled(enabled, cx)
+                });
+            }
+        })
+        .detach();
     }
 
     /// Hides all active inline assists when AI is disabled