Stabilize paired-room orchestration and Codex app-server flow

runners/codex-runner/test/app-server-state.test.ts

@@ -0,0 +1,83 @@
+import { describe, expect, it } from 'vitest';
+
+import {
+  createInitialAppServerTurnState,
+  getAppServerTurnResult,
+  reduceAppServerTurnState,
+} from '../src/app-server-state.js';
+
+describe('codex app-server turn state', () => {
+  it('prefers final_answer over commentary when building final output', () => {
+    let state = createInitialAppServerTurnState();
+
+    state = reduceAppServerTurnState(state, {
+      method: 'item/completed',
+      params: {
+        item: {
+          type: 'agentMessage',
+          phase: 'commentary',
+          text: '중간 설명입니다.',
+        },
+      },
+    });
+
+    state = reduceAppServerTurnState(state, {
+      method: 'item/completed',
+      params: {
+        item: {
+          type: 'agentMessage',
+          phase: 'final_answer',
+          text: '최종 답변입니다.',
+        },
+      },
+    });
+
+    expect(getAppServerTurnResult(state)).toBe('최종 답변입니다.');
+  });
+
+  it('does not treat commentary-only messages as a final output', () => {
+    const state = reduceAppServerTurnState(createInitialAppServerTurnState(), {
+      method: 'item/completed',
+      params: {
+        item: {
+          type: 'agentMessage',
+          phase: 'commentary',
+          text: '작업 중 상태입니다.',
+        },
+      },
+    });
+
+    expect(state.latestAgentMessage).toBe('작업 중 상태입니다.');
+    expect(getAppServerTurnResult(state)).toBeNull();
+  });
+
+  it('records compaction completion from contextCompaction items', () => {
+    const state = reduceAppServerTurnState(createInitialAppServerTurnState(), {
+      method: 'item/completed',
+      params: {
+        item: {
+          type: 'contextCompaction',
+          id: 'ctx_1',
+        },
+      },
+    });
+
+    expect(state.compactionCompleted).toBe(true);
+  });
+
+  it('captures upstream HTTP status from app-server error events', () => {
+    const state = reduceAppServerTurnState(createInitialAppServerTurnState(), {
+      method: 'error',
+      params: {
+        error: {
+          message: 'Too many requests',
+          codexErrorInfo: {
+            httpStatusCode: 429,
+          },
+        },
+      },
+    });
+
+    expect(state.errorMessage).toBe('Too many requests (HTTP 429)');
+  });
+});