Report sources now labeled in the reference

The V1 reference is now split by data source. The Section Coach reports (Coach, Employee x Superpower, Employee x Use Case) sit in one section, and the four reports that read the legacy AI Academy platform (Course, Employee, Employee x Course, Employee x Certificate) sit in a separate section marked legacy.

The AI Academy reports cover instructor-led video courses and the badges earned from them. They contain no Section Coach platform activity. If your organization did not use AI Academy, these four return an empty result rather than an error, so a header-only file is the expected response and not a sign of a failed request. Every endpoint description now states its source in the first line.

No endpoint, parameter, or response field changed in this release.