refactor(agent): replace OMP with Claude Code kernel

scripts/verify-chat-header-integration.cjs

@@ -15,7 +15,7 @@ if (!process.versions.electron) {
     const b = { id: uuid(), title: '另一个会话 Beta', cwd, createdAt: now, updatedAt: now,
       messages: [{ id: uuid(), role: 'assistant', createdAt: now, status: 'done', content: '另一会话独立内容 Different conversation text.' }] }
     await fs.writeFile(path.join(data, 'sessions.json'), JSON.stringify({ sessions: [a, b] }))
-    const env = { ...process.env, YCODE_USER_DATA_DIR: data, YCODE_OMP_HOME: home, YCODE_QA_DIRECTORY: directory,
+    const env = { ...process.env, YCODE_USER_DATA_DIR: data, YCODE_QA_DIRECTORY: directory,
       YCODE_QA_HEADER_FIXTURES: JSON.stringify([a.id, b.id]), YCODE_DISABLE_GPU: '1', YCODE_QA_OFFSCREEN: '1' }
     delete env.ELECTRON_RUN_AS_NODE; delete env.ELECTRON_RENDERER_URL
     const child = require('node:child_process').spawn(require('electron'), ['--no-sandbox', '--disable-gpu-sandbox', __filename],