diff --git a/frontend/src/routes/search/InterpretationChipRow.svelte.spec.ts b/frontend/src/routes/search/InterpretationChipRow.svelte.spec.ts
index 9cefc628..6242d16b 100644
--- a/frontend/src/routes/search/InterpretationChipRow.svelte.spec.ts
+++ b/frontend/src/routes/search/InterpretationChipRow.svelte.spec.ts
@@ -1,3 +1,6 @@
+// NOTE: vitest-browser fails silently when the project path contains '+' (common in git worktrees
+// named 'feat+issue-NNN-slug'). If tests fail with iframe routing errors, copy the frontend
+// directory to a path without '+' (e.g. /tmp/fe-copy) and run the suite from there.
 import { describe, expect, it, vi, afterEach } from 'vitest';
 import { cleanup, render } from 'vitest-browser-svelte';
 import { page } from 'vitest/browser';