Add launch crash detection with detailed error dialog, fix all warnings

src/core/analysis.rs

@@ -15,6 +15,7 @@ const MAX_CONCURRENT_ANALYSES: usize = 2;
 static RUNNING_ANALYSES: AtomicUsize = AtomicUsize::new(0);
 
 /// Returns the number of currently running background analyses.
+#[allow(dead_code)]
 pub fn running_count() -> usize {
     RUNNING_ANALYSES.load(Ordering::Relaxed)
 }