Actually run the eval and fix a hang when retrieving outline (#28547)

Release Notes:

- Fixed a regression that caused the agent to hang sometimes.

---------

Co-authored-by: Thomas Mickley-Doyle <tmickleydoyle@gmail.com>
Co-authored-by: Nathan Sobo <nathan@zed.dev>
Co-authored-by: Michael Sloan <mgsloan@gmail.com>

Cargo.toml

@@ -3,13 +3,11 @@ resolver = "2"
 members = [
     "crates/activity_indicator",
     "crates/agent",
-    "crates/agent_rules",
     "crates/anthropic",
     "crates/askpass",
     "crates/assets",
     "crates/assistant",
     "crates/assistant_context_editor",
-    "crates/agent_eval",
     "crates/assistant_settings",
     "crates/assistant_slash_command",
     "crates/assistant_slash_commands",
@@ -211,14 +209,12 @@ edition = "2024"
 
 activity_indicator = { path = "crates/activity_indicator" }
 agent = { path = "crates/agent" }
-agent_rules = { path = "crates/agent_rules" }
 ai = { path = "crates/ai" }
 anthropic = { path = "crates/anthropic" }
 askpass = { path = "crates/askpass" }
 assets = { path = "crates/assets" }
 assistant = { path = "crates/assistant" }
 assistant_context_editor = { path = "crates/assistant_context_editor" }
-assistant_eval = { path = "crates/agent_eval" }
 assistant_settings = { path = "crates/assistant_settings" }
 assistant_slash_command = { path = "crates/assistant_slash_command" }
 assistant_slash_commands = { path = "crates/assistant_slash_commands" }