test: use BDD markers in pruneRecentSyntheticIdles test

src/plugin/recent-synthetic-idles.test.ts

@@ -4,20 +4,20 @@ import { pruneRecentSyntheticIdles } from "./recent-synthetic-idles"
 
 describe("pruneRecentSyntheticIdles", () => {
   it("removes entries older than dedup window", () => {
-    // given
+    //#given
     const recentSyntheticIdles = new Map<string, number>([
       ["ses_old", 1000],
       ["ses_new", 1600],
     ])
 
-    // when
+    //#when
     pruneRecentSyntheticIdles({
       recentSyntheticIdles,
       now: 2000,
       dedupWindowMs: 500,
     })
 
-    // then
+    //#then
     expect(recentSyntheticIdles.has("ses_old")).toBe(false)
     expect(recentSyntheticIdles.has("ses_new")).toBe(true)
   })