Terminal tool improvements (#29924)

WIP

- On macOS/Linux, run the command in bash instead of the user's shell
- Try to prevent the agent from running commands that expect interaction

Release Notes:

- Agent Beta: Switched to using `bash` (if available) instead of the
user's shell when calling the terminal tool.
- Agent Beta: Prevented the agent from hanging when trying to run
interactive commands.

---------

Co-authored-by: WeetHet <stas.ale66@gmail.com>

crates/project/src/project.rs

@@ -1656,6 +1656,16 @@ impl Project {
         })
     }
 
+    pub fn directory_environment(
+        &self,
+        abs_path: Arc<Path>,
+        cx: &mut App,
+    ) -> Shared<Task<Option<HashMap<String, String>>>> {
+        self.environment.update(cx, |environment, cx| {
+            environment.get_directory_environment(abs_path, cx)
+        })
+    }
+
     pub fn shell_environment_errors<'a>(
         &'a self,
         cx: &'a App,