- TMDO_Post_Fields::post_type_for_group() / groups_for_post_type() derive HivePress-style groups from their registry post_type scope (core keeps its own attachment / wc_product / nav_menu_item map); the three copy-pasted switches and the query router's POST_TYPE_GROUP_MAP use them
- Term/comment backfill, shadow verifier and CLI take their groups from the registry (TMDO_Term_Comment_Backfill::registered_groups()); installer drops the hp_* entries already covered by its table patterns; REST listings default post type is filterable (tmdo_rest_default_post_type, default 'post')
- Verify: NoHpMappingsTest guard + mapping/default tests; core unit 640 / integration 449, HP 146/49, WC 10/22 OK
- PR: PR-020e
- GET /wpdo/v1/listings rejects unregistered or non-viewable post types (400) and joins posts so Zone A only lists published posts of that type
- WP_Query fallback now returns only show_in_rest hot columns, matching the Zone A path
- Verify: core unit 605 / integration 432 OK (new RestApi tests); 1M bench: page 7ms, total COUNT 0.12s → 1.7s (tracked in PR-030)
- PR: PR-015