Merge main into M10.2 (render queue + VP9 inter)

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

crates/engine/src/commands/render_queue.rs

@@ -707,6 +707,7 @@ fn save_current_preview(s: &mut Session, p: &Value) -> Result<Value> {
         path: &path,
         storage: s.storage_quota.as_deref(),
         label: "Save Current Preview".into(),
+        nested_switches: s.prefs.general.switches_affect_nested_comps,
     };
     let r = exporter.export(&job, &mut |_, _| true).map_err(EngineError::Other)?;
     s.toast(format!("Saved preview to {}", r.path));