Interface AniLinkDiagnostic

The structured record every library diagnostic is emitted through, the shape reportDiagnostic hands to OnHookErrorHandler observers and serializes into the console.warn fallback. Machine-readable fields (source, kind, requestId) replace prose parsing so platform log collectors can filter and route the library's only unsolicited output. kind is the sole machine key to switch on; hookName names the specific hook (or reserved diagnostic name) for display and correlation, not for branching.