Another batch of lint fixes (#36521)

- **Enable a bunch of extra lints**
- **First batch of fixes**
- **More fixes**

Release Notes:

- N/A

crates/assistant_tools/src/terminal_tool.rs

@@ -216,7 +216,8 @@ impl Tool for TerminalTool {
             async move |cx| {
                 let program = program.await;
                 let env = env.await;
-                let terminal = project
+
+                project
                     .update(cx, |project, cx| {
                         project.create_terminal(
                             TerminalKind::Task(task::SpawnInTerminal {
@@ -229,8 +230,7 @@ impl Tool for TerminalTool {
                             cx,
                         )
                     })?
-                    .await;
-                terminal
+                    .await
             }
         });