- Replace integer `id` (alias archive_content_id) with Vision string fields:
`id: Optional[str]` and `archive_content_id: Optional[str]` — both always
hold the random string ID, never the DB integer.
- Add `root_validator(pre=True)` (map_v3_ids) that maps id_random /
archive_content_id_random → id and archive_content_id, with collision
prevention to reject any integer that arrives in these fields.
- Remove old `archive_content_id_lookup` integer validator (superseded by
sanitize_payload + root_validator).
- Keep `id_random` (alias archive_content_id_random) in responses for
backward compatibility; add id, archive_content_id, id_random to
fields_to_exclude_from_db so they never appear in INSERT/UPDATE payloads.
Generic CRUD layer safety net (post_obj + post_child_obj):
- After building resp_data on create, swap any integer {obj_type}_id with
the corresponding {obj_type}_id_random value — catches models not yet
migrated to Vision IDs.
- Fix return_obj=False fallback to return obj_id as the random string.
Docs: add Section 3D to GUIDE__AE_API_V3_for_Frontend.md documenting the
Vision ID convention — {obj_type}_id is always the random string; the
_id_random suffix is a legacy artifact that frontend code should phase out.
Fixes: POST /v3/crud/archive/{id}/archive_content/ returning integer ID,
breaking the subsequent PATCH flow (422 min_length validation failure).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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