diff --git a/src/shared/agent-display-names.test.ts b/src/shared/agent-display-names.test.ts
index 2c3d732cda..a66449c754 100644
--- a/src/shared/agent-display-names.test.ts
+++ b/src/shared/agent-display-names.test.ts
@@ -194,11 +194,11 @@ describe("getAgentConfigKey", () => {
 })
 
 describe("getAgentListDisplayName", () => {
-  it("applies invisible stable-sort prefixes to the core agent list", () => {
-    expect(getAgentListDisplayName("sisyphus")).toBe("\u200BSisyphus - Ultraworker")
-    expect(getAgentListDisplayName("hephaestus")).toBe("\u200B\u200BHephaestus - Deep Agent")
-    expect(getAgentListDisplayName("prometheus")).toBe("\u200B\u200B\u200BPrometheus - Plan Builder")
-    expect(getAgentListDisplayName("atlas")).toBe("\u200B\u200B\u200B\u200BAtlas - Plan Executor")
+  it("returns display names without invisible sort prefixes", () => {
+    expect(getAgentListDisplayName("sisyphus")).toBe("Sisyphus - Ultraworker")
+    expect(getAgentListDisplayName("hephaestus")).toBe("Hephaestus - Deep Agent")
+    expect(getAgentListDisplayName("prometheus")).toBe("Prometheus - Plan Builder")
+    expect(getAgentListDisplayName("atlas")).toBe("Atlas - Plan Executor")
   })
 
   it("keeps non-core agents unprefixed for list display", () => {
diff --git a/src/shared/agent-display-names.ts b/src/shared/agent-display-names.ts
index 324fac7857..c79b17fe9c 100644
--- a/src/shared/agent-display-names.ts
+++ b/src/shared/agent-display-names.ts
@@ -27,10 +27,10 @@ export const AGENT_DISPLAY_NAMES: Record<string, string> = {
 }
 
 const AGENT_LIST_SORT_PREFIXES: Record<string, string> = {
-  sisyphus: "\u200B",
-  hephaestus: "\u200B\u200B",
-  prometheus: "\u200B\u200B\u200B",
-  atlas: "\u200B\u200B\u200B\u200B",
+  sisyphus: "",
+  hephaestus: "",
+  prometheus: "",
+  atlas: "",
 }
 
 const INVISIBLE_AGENT_CHARACTERS_REGEX = /[\u200B\u200C\u200D\uFEFF]/g