The /initial-setup command was generating NETBOX_API_URL without the
/api suffix, causing all MCP tools to fail with JSON parsing errors.
Changes:
- Update example URL to include /api suffix
- Add instruction to auto-append /api if user forgets
- Fix validation test to be consistent with actual usage
Root cause: Setup asked for base URL (https://netbox.company.com) but
NetBoxClient expects API URL (https://netbox.company.com/api). The
validation test incorrectly added /api/ making it pass, while the
actual MCP server failed.
Fixes#126
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
