refactor(log-viewer): drop the sprite timeline renderers

log-viewer/src/features/timeline/__tests__/search-highlight.test.ts

@@ -27,7 +27,7 @@ describe('SearchHighlightRenderer', () => {
     fill: jest.SpiedFunction<PIXI.Graphics['fill']>;
   };
 
-  // Create a mock LogEvent for testing (following batching.test.ts pattern)
+  // Create a mock LogEvent for testing
   const createMockEvent = (timestamp: number, duration: number): LogEvent => {
     const event = {
       timestamp,

log-viewer/src/features/timeline/optimised/__tests__/MarkerProcessor.test.ts

@@ -7,6 +7,7 @@ import {
   layoutMarkerRects,
   noDataSpanAt,
   markerDuration,
+  sortMarkersByTimeAndSeverity,
   type MarkerLayoutItem,
 } from '../markers/MarkerProcessor.js';
 
@@ -95,6 +96,17 @@ describe('layoutMarkerRects', () => {
   });
 });
 
+describe('sortMarkersByTimeAndSeverity', () => {
+  it('orders by startTime, higher severity first on a tie', () => {
+    const sorted = sortMarkersByTimeAndSeverity([
+      { id: 'late', type: 'error', startTime: 300_000, summary: 'Late' },
+      { id: 'skip', type: 'skip', startTime: 100_000, summary: 'Skip' },
+      { id: 'exception', type: 'exception', startTime: 100_000, summary: 'Exception' },
+    ]);
+    expect(sorted.map((m) => m.id)).toEqual(['exception', 'skip', 'late']);
+  });
+});
+
 describe('noDataSpanAt', () => {
   const spans = [
     { startTime: 100, endTime: 500, summary: 'Skipped-Lines' },

log-viewer/src/features/timeline/optimised/markers/MarkerHitTest.ts

@@ -6,7 +6,7 @@
  * MarkerHitTest
  *
  * Shared utility for hit testing timeline markers.
- * Used by TimelineMarkerRenderer and MeshMarkerRenderer.
+ * Used by MeshMarkerRenderer.
  */
 
 import type { TimelineMarker } from '../../types/flamechart.types.js';

log-viewer/src/features/timeline/optimised/markers/MarkerProcessor.ts

@@ -7,7 +7,7 @@
  *
  * Shared utilities for processing timeline markers (truncation regions).
  * Consolidates pre-blended color computation and marker processing logic
- * used by both MeshMarkerRenderer and TimelineMarkerRenderer.
+ * used by the marker, metric-strip, minimap and selection renderers.
  */
 
 import type { NoDataSpan, TimelineMarker } from '../../types/flamechart.types.js';