fix(agents): use list display names for ordered agent config

src/plugin-handlers/agent-key-remapper.test.ts

@@ -54,7 +54,7 @@ describe("remapAgentKeysToDisplayNames", () => {
     expect(result["hephaestus"]).toBeUndefined()
     expect(result["Prometheus (Plan Builder)"]).toBeDefined()
     expect(result["prometheus"]).toBeUndefined()
-    expect(result["Atlas (Plan Executor)"]).toBeDefined()
+    expect(result["\u200BAtlas (Plan Executor)"]).toBeDefined()
     expect(result["atlas"]).toBeUndefined()
     expect(result["Athena (Council)"]).toBeDefined()
     expect(result["athena"]).toBeUndefined()

src/plugin-handlers/agent-key-remapper.ts

@@ -1,4 +1,4 @@
-import { AGENT_DISPLAY_NAMES } from "../shared/agent-display-names"
+import { getAgentListDisplayName } from "../shared/agent-display-names"
 
 export function remapAgentKeysToDisplayNames(
   agents: Record<string, unknown>,
@@ -6,7 +6,7 @@ export function remapAgentKeysToDisplayNames(
   const result: Record<string, unknown> = {}
 
   for (const [key, value] of Object.entries(agents)) {
-    const displayName = AGENT_DISPLAY_NAMES[key]
+    const displayName = getAgentListDisplayName(key)
     if (displayName && displayName !== key) {
       result[displayName] = value
       // Regression guard: do not also assign result[key].

src/plugin-handlers/agent-priority-order.ts

@@ -1,10 +1,10 @@
-import { getAgentDisplayName } from "../shared/agent-display-names";
+import { getAgentListDisplayName } from "../shared/agent-display-names";
 
 const CORE_AGENT_ORDER: ReadonlyArray<{ displayName: string; order: number }> = [
-  { displayName: getAgentDisplayName("sisyphus"), order: 1 },
-  { displayName: getAgentDisplayName("hephaestus"), order: 2 },
-  { displayName: getAgentDisplayName("prometheus"), order: 3 },
-  { displayName: getAgentDisplayName("atlas"), order: 4 },
+  { displayName: getAgentListDisplayName("sisyphus"), order: 1 },
+  { displayName: getAgentListDisplayName("hephaestus"), order: 2 },
+  { displayName: getAgentListDisplayName("prometheus"), order: 3 },
+  { displayName: getAgentListDisplayName("atlas"), order: 4 },
 ];
 
 function injectOrderField(

src/plugin-handlers/config-handler.test.ts

@@ -4,7 +4,7 @@ import { describe, test, expect, spyOn, beforeEach, afterEach } from "bun:test"
 import { resolveCategoryConfig, createConfigHandler } from "./config-handler"
 import type { CategoryConfig } from "../config/schema"
 import type { OhMyOpenCodeConfig } from "../config"
-import { getAgentDisplayName } from "../shared/agent-display-names"
+import { getAgentDisplayName, getAgentListDisplayName } from "../shared/agent-display-names"
 
 import * as agents from "../agents"
 import * as sisyphusJunior from "../agents/sisyphus-junior"
@@ -198,10 +198,10 @@ describe("Plan agent demote behavior", () => {
     // #then
     const keys = Object.keys(config.agent as Record<string, unknown>)
     const coreAgents = [
-      getAgentDisplayName("sisyphus"),
-      getAgentDisplayName("hephaestus"),
-      getAgentDisplayName("prometheus"),
-      getAgentDisplayName("atlas"),
+      getAgentListDisplayName("sisyphus"),
+      getAgentListDisplayName("hephaestus"),
+      getAgentListDisplayName("prometheus"),
+      getAgentListDisplayName("atlas"),
     ]
     const ordered = keys.filter((key) => coreAgents.includes(key))
     expect(ordered).toEqual(coreAgents)
@@ -1158,11 +1158,11 @@ describe("config-handler plugin loading error boundary (#1559)", () => {
 
 describe("per-agent todowrite/todoread deny when task_system enabled", () => {
   const AGENTS_WITH_TODO_DENY = new Set([
-    getAgentDisplayName("sisyphus"),
-    getAgentDisplayName("hephaestus"),
-    getAgentDisplayName("atlas"),
-    getAgentDisplayName("prometheus"),
-    getAgentDisplayName("sisyphus-junior"),
+    getAgentListDisplayName("sisyphus"),
+    getAgentListDisplayName("hephaestus"),
+    getAgentListDisplayName("atlas"),
+    getAgentListDisplayName("prometheus"),
+    getAgentListDisplayName("sisyphus-junior"),
   ])
 
   test("denies todowrite and todoread for primary agents when task_system is enabled", async () => {

src/plugin-handlers/tool-config-handler.ts

@@ -1,5 +1,5 @@
 import type { OhMyOpenCodeConfig } from "../config";
-import { getAgentDisplayName } from "../shared/agent-display-names";
+import { getAgentDisplayName, getAgentListDisplayName } from "../shared/agent-display-names";
 
 type AgentWithPermission = { permission?: Record<string, unknown> };
 
@@ -15,7 +15,7 @@ function getConfigQuestionPermission(): string | null {
 }
 
 function agentByKey(agentResult: Record<string, unknown>, key: string): AgentWithPermission | undefined {
-  return (agentResult[getAgentDisplayName(key)] ?? agentResult[key]) as
+  return (agentResult[getAgentListDisplayName(key)] ?? agentResult[getAgentDisplayName(key)] ?? agentResult[key]) as
     | AgentWithPermission
     | undefined;
 }

src/shared/agent-display-names.test.ts

@@ -1,5 +1,5 @@
 import { describe, it, expect } from "bun:test"
-import { AGENT_DISPLAY_NAMES, getAgentDisplayName, getAgentConfigKey } from "./agent-display-names"
+import { AGENT_DISPLAY_NAMES, getAgentConfigKey, getAgentDisplayName, getAgentListDisplayName, normalizeAgentForPrompt } from "./agent-display-names"
 
 describe("getAgentDisplayName", () => {
   it("returns display name for lowercase config key (new format)", () => {
@@ -174,6 +174,26 @@ describe("getAgentConfigKey", () => {
     expect(getAgentConfigKey("Momus (Plan Critic)")).toBe("momus")
     expect(getAgentConfigKey("Sisyphus-Junior")).toBe("sisyphus-junior")
   })
+
+  it("resolves atlas even when the UI ordering prefix is present", () => {
+    expect(getAgentConfigKey(getAgentListDisplayName("atlas"))).toBe("atlas")
+  })
+})
+
+describe("getAgentListDisplayName", () => {
+  it("keeps sisyphus unchanged for list display", () => {
+    expect(getAgentListDisplayName("sisyphus")).toBe("Sisyphus (Ultraworker)")
+  })
+
+  it("applies invisible atlas sort prefix for list display", () => {
+    expect(getAgentListDisplayName("atlas")).toBe("\u200BAtlas (Plan Executor)")
+  })
+})
+
+describe("normalizeAgentForPrompt", () => {
+  it("strips atlas UI ordering prefix back to canonical display name", () => {
+    expect(normalizeAgentForPrompt(getAgentListDisplayName("atlas"))).toBe("Atlas (Plan Executor)")
+  })
 })
 
 describe("AGENT_DISPLAY_NAMES", () => {
@@ -200,4 +220,4 @@ describe("AGENT_DISPLAY_NAMES", () => {
     // then contains all expected mappings
     expect(AGENT_DISPLAY_NAMES).toEqual(expectedMappings)
   })
-})
+})

src/shared/agent-display-names.ts

@@ -20,6 +20,14 @@ export const AGENT_DISPLAY_NAMES: Record<string, string> = {
   "council-member": "council-member",
 }
 
+const AGENT_LIST_SORT_PREFIXES: Record<string, string> = {
+  atlas: "\u200B",
+}
+
+function stripAgentListSortPrefix(agentName: string): string {
+  return agentName.replace(/^\u200B+/, "")
+}
+
 /**
  * Get display name for an agent config key.
  * Uses case-insensitive lookup for backward compatibility.
@@ -40,6 +48,13 @@ export function getAgentDisplayName(configKey: string): string {
   return configKey
 }
 
+export function getAgentListDisplayName(configKey: string): string {
+  const displayName = getAgentDisplayName(configKey)
+  const prefix = AGENT_LIST_SORT_PREFIXES[configKey.toLowerCase()]
+
+  return prefix ? `${prefix}${displayName}` : displayName
+}
+
 const REVERSE_DISPLAY_NAMES: Record<string, string> = Object.fromEntries(
   Object.entries(AGENT_DISPLAY_NAMES).map(([key, displayName]) => [displayName.toLowerCase(), key]),
 )
@@ -49,7 +64,7 @@ const REVERSE_DISPLAY_NAMES: Record<string, string> = Object.fromEntries(
  * "Atlas (Plan Executor)" → "atlas", "atlas" → "atlas", "unknown" → "unknown"
  */
 export function getAgentConfigKey(agentName: string): string {
-  const lower = agentName.toLowerCase()
+  const lower = stripAgentListSortPrefix(agentName).toLowerCase()
   const reversed = REVERSE_DISPLAY_NAMES[lower]
   if (reversed !== undefined) return reversed
   if (AGENT_DISPLAY_NAMES[lower] !== undefined) return lower
@@ -67,7 +82,7 @@ export function normalizeAgentForPrompt(agentName: string | undefined): string |
     return undefined
   }
 
-  const trimmed = agentName.trim()
+  const trimmed = stripAgentListSortPrefix(agentName.trim())
   if (!trimmed) {
     return undefined
   }