perf(app): settle web cadence on visible load frames

crates/ely_app/src/shell/web_surface_cadence.rs

@@ -47,7 +47,8 @@ impl WebSurfacePollCadence {
             WebSurfaceRenderPhase::Created | WebSurfaceRenderPhase::Loading
                 if self.last_render_phase != Some(phase) =>
             {
-                extend_deadline(&mut self.load_active_until, now + LOAD_BOOST_WINDOW);
+                self.load_active_until = None;
+                extend_deadline(&mut self.settle_active_until, now + FRAME_SETTLE_WINDOW);
             }
             WebSurfaceRenderPhase::Created | WebSurfaceRenderPhase::Loading => {}
             WebSurfaceRenderPhase::Complete if self.last_render_phase != Some(phase) => {
@@ -230,6 +231,21 @@ mod tests {
         );
     }
 
+    #[test]
+    fn loading_frame_shortens_started_loading_boost() {
+        let start = Instant::now();
+        let mut cadence = WebSurfacePollCadence::default();
+
+        cadence.note_ensure(WebSurfaceInputKind::Idle, true, start);
+        cadence.note_frame("loading", start + Duration::from_secs(1));
+        cadence.note_poll_submitted(start + Duration::from_millis(1_300));
+
+        assert_eq!(
+            cadence.next_poll_delay(start + Duration::from_millis(1_300)),
+            IDLE_POLL_INTERVAL
+        );
+    }
+
     #[test]
     fn complete_frame_preserves_recent_input_boost() {
         let start = Instant::now();
@@ -245,6 +261,21 @@ mod tests {
         );
     }
 
+    #[test]
+    fn loading_frame_preserves_recent_input_boost() {
+        let start = Instant::now();
+        let mut cadence = WebSurfacePollCadence::default();
+
+        cadence.note_ensure(WebSurfaceInputKind::Scroll, false, start);
+        cadence.note_frame("loading", start + Duration::from_millis(100));
+        cadence.note_poll_submitted(start + Duration::from_millis(500));
+
+        assert_eq!(
+            cadence.next_poll_delay(start + Duration::from_millis(500)),
+            ACTIVE_POLL_INTERVAL
+        );
+    }
+
     #[test]
     fn repeated_complete_frames_do_not_extend_settle_window() {
         let start = Instant::now();