fix: watcher startup grace period, defensive runtime drop on reload

crates/owlry-core/src/plugins/watcher.rs

@@ -69,9 +69,17 @@ fn watch_loop(
 
     info!("Watching {} for plugin changes", plugins_dir.display());
 
+    // Skip events during initial startup grace period (watcher setup triggers events)
+    let startup = std::time::Instant::now();
+    let grace_period = Duration::from_secs(2);
+
     loop {
         match rx.recv() {
             Ok(Ok(events)) => {
+                if startup.elapsed() < grace_period {
+                    continue;
+                }
+
                 let has_relevant_change = events.iter().any(|e| {
                     matches!(
                         e.kind,

crates/owlry-core/src/providers/mod.rs

@@ -292,8 +292,11 @@ impl ProviderManager {
             !self.runtime_type_ids.contains(&type_str)
         });
 
-        // Drop old runtimes
-        self.runtimes.clear();
+        // Drop old runtimes (catch panics from runtime cleanup)
+        let old_runtimes = std::mem::take(&mut self.runtimes);
+        drop(std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| {
+            drop(old_runtimes);
+        })));
         self.runtime_type_ids.clear();
 
         let owlry_version = env!("CARGO_PKG_VERSION");