Zero warnings on Windows and Linux, clippy included (W-02, L-02)

rustc and clippy are clean for the whole workspace, every target, on
both. clippy --fix moved test modules last and took the shorter
forms; long types got named aliases; ElyTree's form takes its title
and button words as one pair.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/ely-tree/src/tests.rs

@@ -53,7 +53,9 @@ pub(crate) fn committed(dir: &Path) -> PathBuf {
     root
 }
 
-fn paths(files: &[Changed]) -> Vec<(&str, GitStatus, Option<(usize, usize)>)> {
+type Listed<'a> = (&'a str, GitStatus, Option<(usize, usize)>);
+
+fn paths(files: &[Changed]) -> Vec<Listed<'_>> {
     files
         .iter()
         .map(|file| (file.path.as_ref(), file.status, file.lines))