refactor: Standardized paths module function names to not use 'path' in the name and to just always be either 'dir' or 'file'

src/sandbox/mod.rs

@@ -388,7 +388,7 @@ fn copy_host_files(name: &str) -> Result<()> {
         );
     }
 
-    let oauth_tokens_dir = paths::oauth_tokens_path();
+    let oauth_tokens_dir = paths::oauth_tokens_dir();
     if oauth_tokens_dir.exists() {
         let sandbox_oauth_dir = "/home/agent/.cache/coyote/oauth";
         ensure_sandbox_dir(name, sandbox_oauth_dir)?;