assistant_context_editor: Register `ContextEditor` actions that were lost (#30428)

Marshall Bowers created

This PR restores the `ContextEditor` actions that were lost in
https://github.com/zed-industries/zed/pull/30168.

Closes https://github.com/zed-industries/zed/issues/30356.

Release Notes:

- agent: Added back some missing actions, including `assistant: quote
selection`.

Change summary

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

Detailed changes

crates/assistant_context_editor/src/assistant_context_editor.rs 🔗

@@ -8,7 +8,8 @@ mod slash_command_picker;
 use std::sync::Arc;
 
 use client::Client;
-use gpui::App;
+use gpui::{App, Context};
+use workspace::Workspace;
 
 pub use crate::context::*;
 pub use crate::context_editor::*;
@@ -16,6 +17,18 @@ pub use crate::context_history::*;
 pub use crate::context_store::*;
 pub use crate::slash_command::*;
 
-pub fn init(client: Arc<Client>, _cx: &mut App) {
+pub fn init(client: Arc<Client>, cx: &mut App) {
     context_store::init(&client.into());
+    workspace::FollowableViewRegistry::register::<ContextEditor>(cx);
+
+    cx.observe_new(
+        |workspace: &mut Workspace, _window, _cx: &mut Context<Workspace>| {
+            workspace
+                .register_action(ContextEditor::quote_selection)
+                .register_action(ContextEditor::insert_selection)
+                .register_action(ContextEditor::copy_code)
+                .register_action(ContextEditor::handle_insert_dragged_files);
+        },
+    )
+    .detach();
 }