feat: projcet Initialization

src/lib/agent.js

@@ -0,0 +1,20 @@
+import { spawn } from 'node:child_process'
+
+const commands = {
+  codex: ['codex'],
+  'claude-code': ['claude'],
+  gemini: ['gemini']
+}
+
+export function resolveAgentCommand(agent) {
+  return commands[agent] ?? [agent]
+}
+
+export async function commandExists(command) {
+  return new Promise((resolve) => {
+    const child = spawn('which', [command], { stdio: 'ignore' })
+    child.on('close', (code) => resolve(code === 0))
+    child.on('error', () => resolve(false))
+  })
+}
+