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>

crates/ely-web-content/src/engine.rs

@@ -284,7 +284,7 @@ pub fn start(data: &Path, cx: &mut App) -> Result<()> {
             let why = held(&cache).unwrap_or_else(|| "CEF did not initialize".into());
             log::error!("web: {why}");
             *FAILED.lock().expect("the start lock") = Some(why);
-            cx.update(|cx| crate::view::deliver(cx));
+            cx.update(crate::view::deliver);
             return;
         }
         log::info!("web: CEF started, cache {}", cache.display());
@@ -310,7 +310,7 @@ pub fn start(data: &Path, cx: &mut App) -> Result<()> {
             run_later();
             make_browsers();
             do_message_loop_work();
-            cx.update(|cx| crate::view::deliver(cx));
+            cx.update(crate::view::deliver);
             // As cefclient: CEF does not ask for all work.
             due = Some(FALLBACK);
         }