fix: permanently resolve agent name duplication yo-yo bug

src/hooks/atlas/boulder-continuation-injector.test.ts

@@ -0,0 +1,54 @@
+import { describe, test, expect, beforeEach, afterEach, mock } from "bun:test"
+import type { PluginInput } from "@opencode-ai/plugin"
+import { registerAgentName, _resetForTesting } from "../../features/claude-code-session-state"
+import { injectBoulderContinuation } from "./boulder-continuation-injector"
+
+describe("injectBoulderContinuation", () => {
+  beforeEach(() => {
+    // given
+    _resetForTesting()
+  })
+
+  afterEach(() => {
+    // then
+    _resetForTesting()
+  })
+
+  test("normalizes config-key agent to display-name for promptAsync", async () => {
+    // given
+    registerAgentName("atlas")
+    const promptAsyncMock = mock(async (_request: unknown) => undefined)
+    const messagesMock = mock(async () => ({ data: [] }))
+
+    const ctx = {
+      directory: "/tmp",
+      client: {
+        session: {
+          messages: messagesMock,
+          promptAsync: promptAsyncMock,
+        },
+      },
+    } as unknown as PluginInput
+
+    // when
+    await injectBoulderContinuation({
+      ctx,
+      sessionID: "ses_test_123",
+      planName: "test-plan",
+      remaining: 1,
+      total: 2,
+      agent: "atlas",
+      sessionState: { promptFailureCount: 0 },
+    })
+
+    // then
+    expect(promptAsyncMock).toHaveBeenCalledTimes(1)
+    expect(promptAsyncMock).toHaveBeenCalledWith(
+      expect.objectContaining({
+        body: expect.objectContaining({
+          agent: "Atlas (Plan Executor)",
+        }),
+      }),
+    )
+  })
+})