fix(agent-display): remove ZWSP sort prefixes that truncate agent names in terminals

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 clean display names without ZWSP 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", () => {

src/shared/agent-display-names.ts

@@ -26,11 +26,16 @@ export const AGENT_DISPLAY_NAMES: Record<string, string> = {
   "council-member": "council-member",
 }
 
+// ZWSP sort prefixes removed — they caused agent name truncation in VS Code,
+// WezTerm, and other terminals that mishandle zero-width characters.
+// Sorting now relies exclusively on the `order` field injected by
+// CANONICAL_CORE_AGENT_ORDER in agent-priority-order.ts.
+// The map is kept (with empty values) so callers don't break.
 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