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feat(spec): build out System layer and element schema model

Picture the whole framework, then pin the element-kind language layer.

System platform layer — rebuild the semantics likec4 can't draw (ADR-0001..0004):
- Prelude: opaque Identifiers carrier (ProjectId/RunId/SessionId/Principal)
- System/Run: RunState + Terminal subset (set completeness left OPEN, no invented pending)
- System/Lock: lock owner=run (typed), LockTable exclusivity, WellFormed invariant
  (a lock holder must be a non-terminal run — couples Lock and Run)
- System/Permission: read<edit<manage role lattice, capability derivation,
  can_mono monotonicity theorem; force-release sits outside the lattice (admin-only)
- System/Audit: intentionally thin (mostly plumbing, OPEN)

Courseware product layer — split the single Lesson file into focused modules and
fix doc tautology: Primitives / Element / Lesson / Render / Diagnostic, plus
QuestionBank and Course skeletons (core relations OPEN, not invented).
Diagnostic upgrades WarnsIgnored into a severity-tagged checker rule.

Element schema + rich-content model (ADR-0006, ADR-0007):
- docs/adr/0006: kind schema is declarative JSON Schema; field types are built-in
  scalars plus a `content` extension; a `content` value is typst source taken as
  module body; rich content must carry a VirtualPath (else click-to-jump and
  relative import break — verified against typst source); import boundary =
  within the engineering file + @package
- docs/adr/0007: on-disk form is a real directory tree (agent/grep friendly);
  VirtualPath = real relative path; layout conventions deferred
- spec/Courseware/RichContent: prose anchor for rich content (opaque VPath,
  RichContentRef); ElementData kept abstract — JSON/typst internals are
  implementation detail, not contract

lake build green (18 jobs), no sorry, toolchain v4.31.0.

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

2026-06-22 00:31:14 +08:00

Spec

feat(spec): build out System layer and element schema model

2026-06-22 00:31:14 +08:00

.gitignore

chore: scaffold monorepo with spec/ Lean project and governance docs

2026-06-21 22:00:18 +08:00

lake-manifest.json

chore: scaffold monorepo with spec/ Lean project and governance docs

2026-06-21 22:00:18 +08:00

lakefile.toml

chore: scaffold monorepo with spec/ Lean project and governance docs