Entity JSON Manifest Module

Purpose

The entityJsonManifest module builds and reads GeeSome JSON manifests for users, content, posts, groups, categories, and related generated state.

Manifest generation helpers for named entities.
Group manifest generation, including post references and scalable post-index state.
Conversion from manifest data back into database-ready objects.
User/content manifest conversion and remote identity data needed by import callers.
Helpers for reading group manifest post references without forcing callers to know every manifest layout.

This module owns GeeSome/IPFS manifest shape, not ActivityPub, ATProto, RSS, or HTTP API protocol payloads.
Most lifecycle writes belong to caller modules, but manifestIdToDbObject is not purely read-only: group/user imports register remote account/static-ID history, and post imports may create remote content rows through content.
Keep large group timelines page/index oriented; avoid reintroducing root manifests that grow with every post.
Compatibility readers should continue to handle legacy inline post manifests while current generation prefers chunked indexes for large groups.