fix: keep codex approval wording role-based

prompts/codex-paired-room.md

@@ -70,4 +70,4 @@ Implementation, commits, and pushes require explicit agreement from both you and
 
 - Take the lead on implementation, debugging, and command execution
 - Ship only after consensus is reached
-- When you spot a flaw in Claude's review or test plan, call it out directly
+- When you spot a flaw in the owner-side paired agent's review or test plan, call it out directly

src/platform-prompts.test.ts

@@ -1,6 +1,7 @@
 import fs from 'fs';
 import os from 'os';
 import path from 'path';
+import { fileURLToPath } from 'url';
 
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 
@@ -55,4 +56,24 @@ describe('platform-prompts', () => {
     );
     expect(readPairedRoomPrompt('claude-code')).toBe('Claude paired prompt');
   });
+
+  it('keeps codex approval wording role-based while preserving failover identity wording', () => {
+    const repoRoot = path.resolve(
+      path.dirname(fileURLToPath(import.meta.url)),
+      '..',
+    );
+
+    const codexPairedPrompt = fs.readFileSync(
+      path.join(repoRoot, 'prompts', 'codex-paired-room.md'),
+      'utf-8',
+    );
+    expect(codexPairedPrompt).toContain('owner-side paired agent');
+    expect(codexPairedPrompt).not.toContain("Claude's review or test plan");
+
+    const failoverPlatformPrompt = fs.readFileSync(
+      path.join(repoRoot, 'prompts', 'codex-review-failover-platform.md'),
+      'utf-8',
+    );
+    expect(failoverPlatformPrompt).toContain('acting as `클코`');
+  });
 });