sjfhsjfh 4a828e07b9 feat(spec): add lesson model contract (ADR-0005) ...

First product-core concept in the semantic master spec: a curriculum
engineering file is one lesson, modeled as an ordered sequence of typed
element instances over an open kind universe.

- docs/adr/0005: lesson model decision narrative + deferred OPEN items
- spec/Spec/Courseware/Lesson.lean: Primitives carrier (KindId/ElementData/
  TargetId/RenderRule kept abstract), Element, Lesson, RenderConfig, and the
  first checker seed (WarnsIgnored: used-kind-with-no-render-rule => warning)
- wire Spec.lean -> Spec.Courseware; drop placeholder Basic.lean

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-06-21 23:11:47 +08:00

..

adr

feat(spec): add lesson model contract (ADR-0005)

2026-06-21 23:11:47 +08:00