sonar: method paths instead of closures (rust:S1612)

Poison recovery, OsStr::to_str and char predicates only; S4325 casts are
f64 to f32 and stay.

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

crates/engine/src/render_queue.rs

@@ -110,7 +110,7 @@ pub struct JobShared {
 }
 
 pub(crate) fn lock<T>(m: &Mutex<T>) -> std::sync::MutexGuard<'_, T> {
-    m.lock().unwrap_or_else(|e| e.into_inner())
+    m.lock().unwrap_or_else(std::sync::PoisonError::into_inner)
 }
 
 impl JobShared {