install-ami reports success without post-install verification

[Taiki92777]

Summary

install-ami can report success immediately after running installer script without verifying Ami is actually installed/detectable.

Current behavior

On macOS path, after installer execution returns success, CLI prints:

• Ami installed successfully.

but does not re-check isAmiInstalled() before reporting success.

Why this is a problem

Users may get a false-positive success message when install script exits successfully but app is still not present/detected.

Reproduction

1. Simulate installer script returning success without creating Ami app.
2. Run react-doctor install-ami ..

Observed:

• success message is printed
• Ami is still not detected

Expected behavior

Re-check installation state before printing success; otherwise print actionable error and fallback link.

[Taiki92777]

Proposed fix is in PR #54: #54

[aidenybai]

Fixed in #68: openAmiToFix now re-verifies isAmiInstalled() after running the installer before reporting success.