Per teaching_order.md §5 — pick one commercial domain and run the
full 1→4 progression inside it before opening a second. Kinship is
the doctrinally classic starter: tight DAG, well-bounded primitives,
and orthogonal to the cognition pack.
Lemmas (8): parent, child, sibling, family, ancestor, descendant,
spouse, offspring. Each carries ≥2 semantic_domains under a
deterministic taxonomy (kinship.*, lineage.*, biology.*, social.*).
Deliberate exclusions:
- `person` — lives in en_core_cognition_v1; orthogonality test
pins that boundary.
- Specializations (mother/father/son/daughter/grandparent/...) —
derived from v1 primitives; land in v2 after v1 produces
reviewed chains.
- Quantifiers (one/two/many) — separate domain
(en_core_quantification_v1); cross-domain triples come last.
- Verbs of relation (begets/marries/...) — separate composer
work; no relations_chains_v1.jsonl yet.
Engagement is opt-in:
- Pack is NOT in RuntimeConfig.input_packs defaults.
- Programmatic mount via RuntimeConfig(input_packs=(..., "en_core_relations_v1")).
- CLI: core chat --pack en_core_relations_v1 (existing surface).
- Default-not-mounted preserves the cognition lane unchanged
until cross-pack teaching-grounded composition exists.
- language_packs/data/en_core_relations_v1/lexicon.jsonl
— 8 entries, JSONL format matching en_core_cognition_v1.
- language_packs/data/en_core_relations_v1/manifest.json
— pack_id, language, role=operational_base, checksum
(SHA-256 of lexicon bytes per CLAUDE.md pack-discipline),
version 1.0.0, determinism_class D0, oov_policy tagged_fallback.
- tests/test_en_core_relations_v1_pack.py — 6 tests pin:
checksum-match load, lemma roster, per-lemma primary domain,
≥2 domains/lemma (composer headroom), zero collision with
cognition pack (kinship DAG stays orthogonal), pack-not-in-
default-input-packs (opt-in engagement contract).
- docs/curriculum/relations_pack_v1.md — full pack log:
rationale per included/excluded lemma, opt-in engagement path,
4-step ADR roadmap (cross-pack composition → first kinship
chains → pronoun v2 → cross-domain triples).
Mounted-manifold sanity check (en_core_cognition_v1 +
en_core_relations_v1): 93 lemmas combined, no collisions, both
packs' surfaces individually addressable.
Lanes (regression): smoke 67 / packs 6 / algebra 132 / relations-pack 6.
The non-negotiable field invariant (versor_condition < 1e-6) is
unaffected: this is pure pack data + a contract test.
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