fix: permanently resolve agent name duplication yo-yo bug

src/features/claude-code-session-state/state.test.ts

@@ -6,6 +6,8 @@ import {
   updateSessionAgent,
   setMainSession,
   getMainSessionID,
+  registerAgentName,
+  isAgentRegistered,
   _resetForTesting,
 } from "./state"
 
@@ -102,6 +104,17 @@ describe("claude-code-session-state", () => {
     })
   })
 
+  describe("agent registration", () => {
+    test("should register config-key lookup when given a display name", () => {
+      // given
+      registerAgentName("Atlas (Plan Executor)")
+
+      // when / then
+      expect(isAgentRegistered("atlas")).toBe(true)
+      expect(isAgentRegistered("Atlas (Plan Executor)")).toBe(true)
+    })
+  })
+
   describe("prometheus-md-only integration scenario", () => {
     test("should correctly identify Prometheus agent for permission checks", () => {
       // given - Prometheus session