diff --git a/packages/server/src/server/agent/agent-timeline-store.test.ts b/packages/server/src/server/agent/agent-timeline-store.test.ts
index 6d8106354a..eb46916fe3 100644
--- a/packages/server/src/server/agent/agent-timeline-store.test.ts
+++ b/packages/server/src/server/agent/agent-timeline-store.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { selectReferenceProjectedTimelinePage } from "./timeline-page-reference.test-support.js";
+import { selectReferenceProjectedTimelinePage } from "./test-utils/timeline-page-reference.js";
 import type { AgentTimelineItem } from "./agent-sdk-types.js";
 import { InMemoryAgentTimelineStore } from "./agent-timeline-store.js";
 
diff --git a/packages/server/src/server/agent/timeline-page-reference.test-support.ts b/packages/server/src/server/agent/test-utils/timeline-page-reference.ts
similarity index 98%
rename from packages/server/src/server/agent/timeline-page-reference.test-support.ts
rename to packages/server/src/server/agent/test-utils/timeline-page-reference.ts
index e5c4b016d6..8e9ab228a6 100644
--- a/packages/server/src/server/agent/timeline-page-reference.test-support.ts
+++ b/packages/server/src/server/agent/test-utils/timeline-page-reference.ts
@@ -1,5 +1,5 @@
 // Frozen pre-index page selection: differential oracle for retained projection tests.
-import type { AgentTimelineRow } from "./agent-timeline-store-types.js";
+import type { AgentTimelineRow } from "../agent-timeline-store-types.js";
 import {
   TimelineProjection,
   projectTimelineRows,
@@ -7,7 +7,7 @@ import {
   type ProjectedTimelineRow,
   type TimelineLimitDirection,
   type ProjectedTimelinePageSelection,
-} from "./timeline-projection.js";
+} from "../timeline-projection.js";
 
 function makeCanonicalEntries(rows: readonly AgentTimelineRow[]): TimelineProjectionEntry[] {
   return rows.map((row) => {
diff --git a/packages/server/src/server/agent/timeline-projection.test.ts b/packages/server/src/server/agent/timeline-projection.test.ts
index e424c38f86..f2f832ffcf 100644
--- a/packages/server/src/server/agent/timeline-projection.test.ts
+++ b/packages/server/src/server/agent/timeline-projection.test.ts
@@ -1,4 +1,4 @@
-import { selectProjectedTimelinePage } from "./timeline-page-reference.test-support.js";
+import { selectProjectedTimelinePage } from "./test-utils/timeline-page-reference.js";
 import { describe, expect, test } from "vitest";
 
 import type { AgentTimelineRow } from "./agent-manager.js";