docs(ai): verify and improve docs/llms.txt and docs/llms-full.txt

[felixwidjaja]

Background

From the AI readiness audit (April 20, 2026). Mintlify auto-generates llms.txt and llms-full.txt for docs sites — these are the primary AI-optimized entry points. Quality depends on how well the docs are structured.

Problem

The auto-generated files may be incomplete or contain artifacts (e.g. the placeholder openapi.json entry, which is being addressed separately in #8). These files are what AI agents should read instead of crawling individual pages.

Actions

• Verify https://www.datum.net/docs/llms.txt lists all major sections: AI Edge, Connectors, Platform, datumctl, CLI, Domains & DNS, Datum MCP
• Verify https://www.datum.net/docs/llms-full.txt exists and contains full page content
• Check whether "Open in Claude" artifacts appear in these files or are stripped by Mintlify's AI output
• If coverage is incomplete, investigate Mintlify config options for customizing llms.txt content

Notes

Mintlify supports overriding llms.txt content via configuration if the auto-generated output is insufficient. The llms-full.txt endpoint is the right long-term pattern for giving AI systems full content without sidebar noise.