ACP follow (#34235)

Closes #ISSUE

Release Notes:

- N/A

---------

Co-authored-by: Agus Zubiaga <agus@zed.dev>
Co-authored-by: Anthony Eid <hello@anthonyeid.me>
Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>

crates/acp/Cargo.toml

@@ -20,6 +20,7 @@ gemini = []
 agent_servers.workspace = true
 agentic-coding-protocol.workspace = true
 anyhow.workspace = true
+assistant_tool.workspace = true
 buffer_diff.workspace = true
 editor.workspace = true
 futures.workspace = true