fix: missing process.exit(1) in bundler.js outer catch block

[Hazelnut46]

Bug

When neu build fails due to an error, the CLI still exits with code 0 (success). This is a problem for CI/CD pipelines because they check exit codes to know if a build passed or failed.

Where the bug is

In src/modules/bundler.js, the outer catch block at the end of bundleApp() only logs the error but doesn't call process.exit(1):

catch (e) {
    utils.error(e.message.replace(/^Error: /g, ''));
    // no process.exit(1) here
}

Why this is wrong

The two inner catch blocks in the same function already call process.exit(1) correctly. The outer catch is just missing it.

Fix

Add process.exit(1) after the utils.error call in the outer catch block.