Build report templates over system models — pick target models and fields (recursive relation traversal), copy an AI prompt with the available fields, paste the generated HTML template, then generate PDF reports. BODY pages can attach reusable HEADER / FOOTER fragments.

Manage the fixed key→value pairs that fill HEADER and FOOTER fragments — page headers expect the same values on every page (company name, address, phone), so fragments substitute {{key}} from this registry, never per-record data.

Exercise the reporting API end to end: browse available models, expand their fields (relations lazy-load recursively), and smoke-test report generation for every saved BODY template.