feat: refactor ccx.ts to use esMain check and export function

- Add esMain check to properly handle module vs script execution
- Export claudeCodeExec function for programmatic use
- Update shebang to use tsx for TypeScript execution
- Minor test comment improvement for clarity

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: snomiao

ccx.ts

@@ -1,8 +1,17 @@
+#!/usr/bin/env tsx
 // ccx = claude code execution
 
+import esMain from "es-main"
 import yesClaude from "."
 
-const prompt = process.argv.slice(2)
-console.log("Claude Code Exec: ", prompt.join(" "))
+if (esMain(import.meta)) {
+    const prompt = process.argv.slice(2).join(' ')
+    console.log("Claude Code Exec: ", prompt)
+
+    await claudeCodeExec(prompt)
+}
+
+export default async function claudeCodeExec(prompt: string) {
+    await yesClaude({ claudeArgs: [prompt], exitOnIdle: true })
+}
 
-await yesClaude({ claudeArgs: [prompt.join(" ")], exitOnIdle: true })

index.test.ts

@@ -42,6 +42,6 @@ it('Write file with auto bypass permission prompt', async () => {
 
     expect(p.exitCode).toBe(0); // expect the process to exit successfully
 
-    // 30 seconds timeout for this test, it usually takes 13s to run (10s for claude to respond, 3s for idle watcher to exit)
+    // 30 seconds timeout for this test, it usually takes 13s to run (10s for claude to solve this problem, 3s for idle watcher to exit)
 }, 30e3);