hermes - 💡(How to fix) Fix Feature Request: Self-diagnosis for command hijacking conflicts in hermes doctor [1 pull requests]

# User mistakenly installs wrong package
npm install -g hermes-cli

# Now 'hermes' points to the wrong binary
which hermes
# → ~/.npm-global/bin/hermes (wrong!)

# Hermes doctor doesn't detect this conflict
hermes doctor
# → All checks pass (but command is hijacked)

---

# In hermes_cli/doctor.py

def check_command_hijacking():
    """Check if hermes command is hijacked by other packages."""
    hermes_path = shutil.which("hermes")
    expected_path = get_hermes_binary_path()
    
    if hermes_path != expected_path:
        return DiagnosticResult(
            status="warning",
            message=f"hermes command points to {hermes_path}, expected {expected_path}",
            suggestion="Check for conflicting npm packages: npm list -g hermes hermes-cli"
        )
    
    # Check npm global conflicts
    npm_packages = run("npm list -g --depth=0 2>/dev/null")
    if "hermes" in npm_packages or "hermes-cli" in npm_packages:
        return DiagnosticResult(
            status="warning", 
            message="Found conflicting npm packages",
            suggestion="Run: npm uninstall -g hermes hermes-cli"
        )